Philippine Legal Context

Family land in the Philippines is often inherited, informally divided, or occupied by several relatives for many years without a formal partition. It is common for land to remain titled in the name of a deceased parent, grandparent, or ancestor, while the children, grandchildren, or other heirs treat themselves as owners of specific portions. Because of this, disputes frequently arise when one heir, sibling, relative, or co-owner mortgages, pledges, sells, or uses the land as collateral without the consent of the others.

The general rule is simple: a co-owner may deal only with his or her own undivided share, not the entire property, unless authorized by all co-owners or by law. A mortgage or pledge made without the consent of the other co-owners is not automatically valid against the whole family land. It may bind only the share, rights, or interest of the person who executed it.

However, the actual legal effect depends on several facts: whether the land is titled, whether the title is still in the name of a deceased person, whether there has been partition, whether the mortgagor is an heir, whether the creditor acted in good faith, whether the property is conjugal or community property, whether the family home is involved, and whether forged signatures or falsified documents were used.

This article explains the rules, consequences, remedies, and practical steps under Philippine law.

I. What Is Co-Ownership?

Co-ownership exists when two or more persons own the same property at the same time, with each person having an ideal or undivided share.

In co-ownership, each co-owner owns a proportionate right over the whole property, not a physically identified portion unless partition has already been made.

For example, if four siblings inherit one parcel of land from their deceased parents, each sibling may own a one-fourth undivided share. This does not mean each sibling automatically owns a specific corner of the land. Until partition, all four siblings co-own the entire parcel.

II. Family Land as Co-Owned Property

Family land commonly becomes co-owned because of:

Inheritance from deceased parents or grandparents.
Purchase by several relatives.
Conjugal or community property of spouses.
Donation to several family members.
Informal sharing among siblings.
An unpartitioned estate.
Land held under one title but occupied by several branches of the family.
Property bought using family contributions.
Ancestral or clan property.
Property titled in one relative’s name but allegedly held for others.

In many Filipino families, the title may still be in the name of a deceased ancestor. Legally, however, the heirs may already have hereditary rights from the moment of death, even if the title has not yet been transferred.

III. Co-Ownership vs. Partition

Co-ownership means several persons own the same property together.

Partition means the co-ownership is divided so that each co-owner receives a specific property, portion, or value corresponding to his or her share.

Partition may be:

Extrajudicial, by agreement of all co-owners or heirs.
Judicial, through court action.
Physical, where the land is actually divided.
By assignment, where one heir gets one property and another heir gets another.
By sale, where the land is sold and proceeds are divided.
By buyout, where one co-owner buys the shares of the others.

Until partition, no co-owner can unilaterally claim exclusive ownership of a specific part of the land against the others.

IV. What Is a Mortgage?

A mortgage is a security arrangement where real property is used as collateral for a debt or obligation.

In a real estate mortgage, the debtor or property owner grants the creditor a right over the property to secure payment. If the debt is not paid, the creditor may foreclose the mortgage and sell the mortgaged property according to law.

A mortgage does not immediately transfer ownership to the creditor. It creates a lien or encumbrance over the property.

For land, a mortgage is usually documented in writing, notarized, and registered with the Register of Deeds if the land is titled.

V. What Is a Pledge?

A pledge is a security arrangement involving personal property or movable property, where possession is delivered to the creditor or a third person to secure an obligation.

Strictly speaking, land cannot be pledged because pledge applies to personal property. Land is generally subject to mortgage, not pledge.

However, in ordinary speech, people sometimes say “isinangla ang lupa” or “pledged the land” to mean the land was used as collateral, mortgaged, pawned informally, or placed under an arrangement where the creditor occupies or uses the land until payment.

Legally, the proper classification matters:

If real property is used as collateral, it is usually a real estate mortgage.
If possession and enjoyment of land are given to a creditor with fruits or income applied to interest or principal, it may resemble antichresis.
If the arrangement is an informal “sangla,” it may be examined based on its true terms.
If the document is actually a sale with right to repurchase, it may be treated differently.
If the supposed pledge involves possession but no proper legal form, its enforceability may be questioned.

VI. General Rule: A Co-Owner Can Mortgage Only His or Her Share

A co-owner has ownership rights over his or her undivided share. Because of this, a co-owner may generally sell, assign, or mortgage his or her own share.

But a co-owner cannot mortgage the shares of the other co-owners without their consent.

Thus, if one sibling mortgages the whole family land without the consent of the other siblings, the mortgage is generally valid only as to that sibling’s undivided share, assuming that sibling actually has a valid share and the mortgage is otherwise lawful.

The mortgage does not bind the shares of the non-consenting co-owners.

VII. Example: One of Four Siblings Mortgages the Whole Land

Suppose a parcel of land is inherited by four siblings in equal shares. One sibling signs a real estate mortgage over the entire property without the consent of the other three.

If the sibling owns only one-fourth of the property, then the mortgage may generally affect only that sibling’s one-fourth undivided interest.

The creditor cannot validly foreclose the entire ownership of the other three siblings merely because one sibling signed the mortgage.

However, complications may arise if:

The title is in the name of the signing sibling.
The signing sibling falsely represented himself as sole owner.
The other siblings allowed the signing sibling to appear as sole owner.
The mortgage was registered on the title.
The creditor relied on a clean title.
There were forged documents.
The land was already partitioned informally.
The heirs failed to settle the estate for many years.
The creditor later seeks foreclosure and sale.

VIII. Mortgage of Entire Property Without Authority

A person who owns only a share cannot validly mortgage the whole property as if he or she were sole owner.

The legal effect is usually limited to the mortgagor’s actual interest.

For the non-consenting co-owners, the mortgage is generally ineffective as to their shares.

They may seek cancellation of the mortgage annotation insofar as it affects their shares, or they may oppose foreclosure covering more than the mortgagor’s interest.

IX. No One Can Give What They Do Not Own

A basic principle applies: no one can give what he or she does not have.

A co-owner who owns only an undivided share cannot give a creditor a greater right than that share.

If a person has no ownership interest at all, a mortgage executed by that person generally conveys no valid mortgage right over the property.

For example, a nephew who is not an heir or owner cannot mortgage family land merely because he lives on it.

X. Effect of Mortgage on Non-Consenting Co-Owners

Non-consenting co-owners generally remain owners of their shares.

Their rights are not lost merely because another co-owner mortgaged the land.

They may:

Refuse to recognize the mortgage over their shares.
Demand correction or cancellation of improper encumbrance.
Oppose foreclosure involving their shares.
File an action for quieting of title.
File an action for cancellation of mortgage annotation.
File an action for partition.
Claim damages, if appropriate.
File criminal complaints if forgery or falsification occurred.
Assert their rights before the Register of Deeds or court.
Negotiate with the creditor to protect the property.

XI. Effect on the Mortgaging Co-Owner

The co-owner who executed the mortgage remains bound by the mortgage to the extent of his or her rights.

If the loan is unpaid, the creditor may proceed against that co-owner’s undivided share, subject to legal procedure.

The creditor may become the buyer of that share through foreclosure, or a third party may acquire it. The buyer would then become a co-owner with the remaining family members, unless partition or settlement occurs.

This is why unauthorized mortgages can create serious family disputes.

XII. Can the Creditor Foreclose the Whole Land?

Generally, the creditor can foreclose only what was validly mortgaged.

If only one co-owner validly mortgaged his share, the creditor should not be able to foreclose the shares of the non-consenting co-owners.

However, if the mortgage appears registered over the entire title, the creditor may attempt foreclosure over the whole property. Non-consenting co-owners must act promptly to protect their rights.

They may need to file a court case to stop foreclosure, cancel the mortgage as to their shares, or clarify ownership.

XIII. Registered Land and Torrens Title Issues

If the land is registered under the Torrens system, the title is central.

A creditor dealing with registered land generally examines the certificate of title. If the title shows only one registered owner, the creditor may rely on the title unless there are facts requiring further inquiry.

This creates complications in family land cases where:

The title is in the name of one sibling only.
The title is still in the name of a deceased parent.
The title does not reflect all heirs.
The title was transferred through questionable documents.
There is an adverse claim or notice of lis pendens.
The creditor knew there were other occupants or co-owners.
The creditor ignored facts suggesting co-ownership.

A Torrens title protects innocent purchasers and mortgagees in good faith, but it does not protect fraud, bad faith, or forged instruments.

XIV. Mortgage by Registered Owner Who Is Only a Trustee or Co-Heir

Sometimes land is titled in one family member’s name for convenience, even though other relatives contributed to purchase or inherited the land.

If the registered owner mortgages the land, the creditor may argue that it relied on the title.

The other family members may argue that the registered owner held the property in trust or that the creditor knew or should have known of their rights.

These cases are fact-intensive.

Important evidence includes:

Source of purchase money.
Deeds or agreements.
Tax declarations.
Possession by other relatives.
Improvements built by other co-owners.
Family settlement documents.
Estate records.
Prior acknowledgments by the registered owner.
Communications with the creditor.
Whether the creditor inspected the property.

XV. Mortgage of Land Still Titled in the Name of a Deceased Parent

If the land remains titled in the name of a deceased parent, no single heir should mortgage the entire property without settlement of the estate and consent of the other heirs.

Upon death, the heirs acquire hereditary rights, but the estate must be settled and debts addressed.

One heir may mortgage only his hereditary rights or undivided interest, not the entire property.

A creditor accepting a mortgage over land titled in a deceased person’s name should be careful. The creditor should require:

Death certificate.
Proof of heirs.
Extrajudicial settlement or court order.
Consent of all heirs.
Tax clearance and estate documents, where relevant.
Authority from estate administrator, if under court settlement.
Registration documents.
Proof that the mortgagor has authority to encumber the property.

A mortgage signed by only one heir over estate property is vulnerable to challenge by the other heirs.

XVI. Mortgage by an Heir Before Partition

An heir may transfer, sell, or mortgage his or her hereditary rights, but cannot identify a specific portion as exclusively his or hers before partition.

For example, an heir may mortgage “my undivided one-fifth hereditary share in the estate of my deceased father,” but should not mortgage “Lot 1, entire property” unless all heirs consent or partition has given that heir ownership of that specific property.

Before partition, the heir’s right is ideal and undivided.

XVII. Mortgage of a Specific Portion Before Partition

A co-owner may be occupying a specific portion of family land. But occupation does not necessarily mean exclusive ownership.

If that co-owner mortgages the specific occupied portion without partition, the mortgage may be challenged.

The creditor may acquire only the mortgagor’s undivided share, not necessarily the specific physical area occupied.

If later partition assigns that portion to someone else, complications arise. The mortgage may attach to the actual share allotted to the mortgagor or may require adjustment depending on the circumstances.

XVIII. Informal Family Agreements

Families often have informal arrangements:

“This side is for Kuya.”
“That portion is for Ate.”
“The back portion is for the youngest.”
“The house belongs to the child who took care of the parents.”
“Everyone agreed verbally long ago.”

Informal arrangements may have practical value but may not be enough to bind third persons unless properly documented, partitioned, and registered.

A co-owner relying on an informal family partition should formalize it before mortgaging, selling, or developing the land.

XIX. Oral Consent of Co-Owners

Consent to mortgage land should be clear and properly documented.

Oral consent is risky.

A co-owner may later deny giving consent. A creditor may have difficulty proving authority. The Register of Deeds may require written, notarized documents.

For real estate transactions, written and notarized instruments are strongly preferred and often practically necessary for registration.

XX. Special Power of Attorney

If one co-owner will mortgage the property on behalf of others, there should be a proper Special Power of Attorney, commonly called SPA.

The SPA should specifically authorize the agent to mortgage or encumber the property. A general authority to manage the property may not be enough.

A proper SPA should identify:

Principal or co-owner granting authority.
Agent or attorney-in-fact.
Property details.
Authority to mortgage.
Loan or obligation to be secured, where appropriate.
Creditor, where known.
Duration or limits of authority.
Signatures.
Notarization.
Consular acknowledgment or apostille, if executed abroad, depending on circumstances.

Without valid authority, the mortgage may be ineffective as to the non-signing co-owners.

XXI. Forged Signatures

If signatures of co-owners were forged, the mortgage is void as to those whose signatures were forged.

Forgery is serious. It may lead to:

Civil action to annul or cancel mortgage.
Criminal complaint for falsification.
Complaint against the notary public, if involved.
Administrative complaint against professionals, where applicable.
Damages.
Cancellation of annotations.
Injunction against foreclosure.

A forged document cannot validly transfer or encumber the property rights of the person whose signature was forged.

XXII. Falsified Special Power of Attorney

A common scheme is the use of a fake SPA supposedly authorizing one relative to mortgage family land.

Red flags include:

Co-owner was abroad on the date of notarization.
Co-owner was already dead when SPA was executed.
Signature does not match.
No competent evidence of identity.
Notary details are suspicious.
Document was notarized in a place where the signer never appeared.
SPA grants unusually broad authority.
Co-owner denies signing.
No witness can confirm execution.
Notarial register has no record.

A falsified SPA may invalidate the mortgage as to the supposed principals.

XXIII. Mortgage by One Spouse Without the Other

If the family land is conjugal or community property of spouses, one spouse generally cannot validly mortgage the property without the required consent of the other spouse, subject to legal exceptions.

The applicable rule depends on the marriage property regime:

Absolute community of property.
Conjugal partnership of gains.
Separation of property.
Marriage settlement.
Special rules for Muslim marriages or other regimes.

If a spouse mortgages conjugal or community land without the other spouse’s consent, the transaction may be void or voidable depending on the governing law, timing, and circumstances.

This is separate from co-ownership among siblings but often overlaps in family land disputes.

XXIV. Mortgage of Family Home

A family home has special protection under Philippine law.

A family home is intended to shelter the family and may enjoy exemption from execution, forced sale, or attachment, subject to exceptions.

However, the family home may still be subject to mortgage or execution in certain cases, such as debts secured by mortgage on the premises, taxes, debts incurred before constitution of the family home, or other legally recognized exceptions.

If the land is a family home, additional care is needed.

Questions include:

Was the property legally constituted as a family home?
Who are the beneficiaries?
Did the required parties consent?
Was the mortgage valid?
Does an exception apply?
Is foreclosure allowed?
Are there minor beneficiaries?
Was the property value within legal limits?

A family home issue may provide defenses or require special proceedings, but it does not automatically invalidate every mortgage.

XXV. Mortgage vs. Sale With Right to Repurchase

Sometimes a transaction called “sangla” is documented as a sale with right to repurchase.

This can be dangerous. A family member may think the land was only used as collateral, but the document may say the land was sold and may become consolidated in the buyer’s name if not repurchased.

Courts may examine whether the transaction was really an equitable mortgage rather than a true sale.

Signs of equitable mortgage may include:

Price is unusually low.
Seller remains in possession.
Seller continues paying taxes.
Buyer does not take ordinary ownership acts.
There is a debt relationship.
There is a right to repurchase.
The real intention was security for a loan.
Documents were prepared by creditor.
Borrower was in urgent need of money.
Terms are oppressive.

If a co-owner signs such a document without the others, the rights of non-consenting co-owners may still be protected.

XXVI. Antichresis Over Family Land

Antichresis is an arrangement where the creditor acquires the right to receive fruits or income from immovable property and applies them to interest or principal.

For land, this may occur when the creditor is allowed to occupy or use the land, harvest crops, collect rentals, or operate the property until the debt is paid.

Antichresis must comply with legal requirements, including writing and proper specification of the principal and interest.

A co-owner cannot validly give possession or fruits of the entire co-owned land to a creditor without the consent of other co-owners.

If the creditor takes possession of the whole family land based on an agreement with only one co-owner, the others may demand respect for their shares and may seek ejectment, accounting, or partition depending on facts.

XXVII. Can a Co-Owner Use the Land as Collateral for Personal Debt?

A co-owner may use his or her own share as collateral for personal debt.

But the co-owner cannot use the entire property, including the shares of others, for personal debt without authority.

If the loan benefited only the signing co-owner, the other co-owners generally should not be made liable.

If the loan benefited the family or the estate, the creditor may argue that others benefited or ratified the transaction. But benefit alone does not always equal consent to mortgage.

XXVIII. Ratification by Co-Owners

A mortgage initially unauthorized may later be ratified by the non-consenting co-owners.

Ratification may occur if the co-owners, with knowledge of the mortgage, expressly approve it or accept benefits under circumstances showing approval.

Examples that may be argued as ratification:

Signing a later confirmation.
Receiving part of the loan proceeds.
Allowing the creditor to rely on the mortgage for years.
Participating in restructuring.
Paying the loan as co-obligors.
Signing foreclosure-related documents.
Executing documents acknowledging the mortgage.

However, ratification must be clear. Mere silence may not always be enough, especially where co-owners did not know their rights were affected.

XXIX. Estoppel

A co-owner may be prevented from denying a mortgage if his or her conduct misled the creditor into believing the mortgagor had authority.

For example, if all siblings allowed one sibling to appear publicly as sole owner, allowed that sibling to hold title, allowed that sibling to negotiate with the bank, and accepted loan proceeds, they may face an estoppel argument.

But estoppel depends on facts. It cannot be lightly presumed against true owners, especially in cases of fraud or forgery.

XXX. Good Faith of the Mortgagee

A mortgagee is the creditor who accepts the mortgage.

Good faith matters, especially for registered land.

A mortgagee in good faith is one who accepts the mortgage relying on the title and circumstances without knowledge of defects or competing claims.

But a creditor may be in bad faith if:

The land is occupied by persons other than the mortgagor.
The creditor knew the land was inherited and unpartitioned.
The title showed co-ownership.
The creditor ignored adverse claims.
The creditor accepted suspicious documents.
The creditor failed to verify authority.
The mortgagor was not the registered owner.
The title was in the name of a deceased person.
The creditor knew not all heirs signed.
The loan was grossly disproportionate to the property value.

Banks and professional lenders are expected to exercise diligence.

XXXI. Mortgagee’s Duty to Inspect Possession

A creditor dealing with land should consider who possesses the property.

If persons other than the mortgagor are occupying or using the land, the creditor may be expected to inquire into their rights.

Possession by other relatives may indicate co-ownership, tenancy, lease, family home, or adverse claim.

A creditor who ignores actual possession by non-signing co-owners may have difficulty claiming good faith.

XXXII. Effect of Registration of Mortgage

Registration of a mortgage on a title gives notice to the world of the encumbrance.

However, registration does not cure fundamental defects such as lack of ownership, lack of authority, or forgery.

If the mortgagor had authority only over his share, registration cannot validly burden the shares of others beyond what the mortgagor could legally encumber.

Non-consenting co-owners may seek cancellation or limitation of the mortgage annotation.

XXXIII. Adverse Claim

A co-owner who discovers unauthorized dealings may consider registering an adverse claim if legally appropriate.

An adverse claim gives notice that the claimant asserts a right or interest in the property.

This may help protect the co-owner against future transactions.

However, adverse claims have technical requirements and limited duration rules. They should be used properly and supported by a valid claim.

XXXIV. Notice of Lis Pendens

If a court case is filed involving title to or possession of real property, a party may seek annotation of a notice of lis pendens.

This tells third persons that the property is subject to litigation.

A notice of lis pendens may be useful in cases seeking:

Annulment of mortgage.
Cancellation of title.
Partition.
Reconveyance.
Quieting of title.
Declaration of co-ownership.
Cancellation of encumbrance.

It helps prevent the property from being transferred or encumbered further without notice of the pending case.

XXXV. Co-Owner’s Right to Redemption

If a co-owner sells his share to a stranger, other co-owners may have a legal right of redemption under certain conditions.

In mortgage foreclosure, similar practical issues may arise if a stranger acquires one co-owner’s share.

The remaining co-owners may consider whether any redemption rights, foreclosure redemption periods, or equitable remedies are available.

These rights are technical and time-sensitive.

XXXVI. Foreclosure of a Co-Owner’s Share

If the mortgage over a co-owner’s share is valid and the debt is unpaid, foreclosure may affect that share.

The buyer at foreclosure sale may step into the shoes of the mortgaging co-owner.

The buyer may become a co-owner with the other family members.

The buyer may then seek partition to realize the value of the acquired share.

This means that even if the entire land is not lost, family members may end up co-owning the property with an outsider.

XXXVII. Can the Creditor Evict the Other Co-Owners?

A creditor or foreclosure buyer of only one co-owner’s share generally cannot evict the other co-owners from the entire property merely by acquiring one share.

The creditor or buyer becomes entitled only to the rights corresponding to the acquired share.

Until partition, co-owners have rights to possess and use the property, subject to respecting the equal rights of others.

If the creditor takes over the whole land, the other co-owners may seek legal remedies.

XXXVIII. Mortgage of Improvements on Co-Owned Land

Sometimes a co-owner builds a house or improvement on family land and then mortgages the house or improvement.

Questions arise:

Who owns the land?
Who owns the house?
Was the house built with consent?
Is the house separate from the land?
Is the improvement declared for tax purposes?
Can the improvement be removed?
Was the mortgage only over the improvement or also the land?
Did the other co-owners consent?
Was the improvement built in good faith?
Was there an agreement allocating that portion?

A co-owner may have rights over improvements he or she introduced, but cannot mortgage the underlying land beyond his or her share without consent.

XXXIX. Mortgage of Agricultural Family Land

If the family land is agricultural, additional issues may arise:

Tenancy or agrarian reform rights.
Emancipation patents or certificates of land ownership award.
Restrictions on transfer or encumbrance.
Rights of farmer-beneficiaries.
Irrigation or crop liens.
Possession by tenants.
Agricultural leasehold.
Legal limits on foreclosure or transfer.

A mortgage of agricultural land should be reviewed for agrarian law restrictions.

XL. Mortgage of Ancestral or Clan Land

If the land involves indigenous peoples, ancestral domain, or ancestral land claims, special laws may apply.

Questions include:

Is the land covered by ancestral domain or ancestral land title?
Are customary law requirements involved?
Is consent of the indigenous cultural community required?
Are there restrictions on alienation or encumbrance?
Are government approvals needed?
Is the land individually titled or communally held?

A family member cannot unilaterally mortgage communal or ancestral land if the law or customary rules require collective consent.

XLI. Mortgage of Land Under Free Patent or Homestead

Some lands acquired through public land grants may have restrictions on sale, mortgage, or encumbrance for a certain period.

If family land originated from a free patent, homestead patent, emancipation patent, or similar government grant, check whether restrictions apply.

An unauthorized mortgage may be invalid or subject to government rules if executed within a prohibited period or contrary to statutory restrictions.

XLII. Mortgage of Untitled Land

Untitled land may still be possessed or claimed by family members, but mortgage issues become more complicated.

A lender may accept rights, improvements, tax declarations, or possessory rights as security, but such arrangements may be risky and may not be registered like titled real estate mortgages.

Co-owner consent remains important.

A family member cannot validly encumber the possessory rights or improvements of others without authority.

XLIII. Tax Declarations Are Not Conclusive Ownership

A person may hold the tax declaration for family land but not be sole owner.

Tax declarations are evidence of possession or claim but do not conclusively prove ownership.

If one relative uses a tax declaration to mortgage land or obtain a loan, other co-owners may still prove their ownership through title, inheritance, possession, deeds, or other evidence.

XLIV. Possession Does Not Equal Sole Ownership

A co-owner who lives on the land, farms it, pays taxes, or manages it does not automatically become sole owner.

Possession by one co-owner is generally considered possession for all co-owners unless there is clear repudiation of co-ownership and other legal requirements are met.

Therefore, mere possession usually does not allow that co-owner to mortgage the whole land.

XLV. Long Occupation and Prescription

A co-owner may claim ownership by prescription only under strict conditions.

Because possession by a co-owner is generally not adverse to the others, the possessing co-owner must clearly repudiate the co-ownership, communicate such repudiation to the others, and possess openly, exclusively, and adversely for the required period.

This is difficult to prove.

A co-owner cannot usually defeat family co-ownership simply by saying, “I have lived here for many years, so I can mortgage it.”

XLVI. Mortgage of Property Under Litigation

If the property is already subject to a pending dispute, mortgage becomes risky.

A mortgagee who accepts a mortgage despite notice of litigation may be bound by the outcome.

If a notice of lis pendens is annotated, third parties are deemed notified that the property is under litigation.

A co-owner should not mortgage disputed family land without resolving ownership or authority issues.

XLVII. Effect of Death of a Co-Owner

If a co-owner dies, that co-owner’s share passes to his or her heirs.

If the deceased co-owner had mortgaged his share before death, the mortgage may continue to affect that share.

The debt and mortgage issues may become part of estate settlement.

The heirs of the mortgaging co-owner generally inherit subject to valid encumbrances affecting the inherited share.

XLVIII. Mortgage After Death Using Deceased Person’s Signature

If someone executes a mortgage using the name or supposed signature of a deceased owner, the document is void and may be criminally fraudulent.

A dead person cannot sign a mortgage.

If a notarized document appears to have been signed after the alleged signer died, immediate legal action should be considered.

Evidence includes:

Death certificate.
Notarized mortgage document.
Notarial register.
Witness statements.
Registry records.
Loan documents.
Identification documents used.

XLIX. Mortgage by Estate Administrator

If an estate is under judicial settlement, an administrator or executor may manage estate property but cannot freely mortgage estate land without court authority when required.

A creditor dealing with estate property should verify:

Appointment of administrator or executor.
Letters of administration or testamentary.
Court authority to mortgage.
Purpose of loan.
Notice to heirs.
Court approval.
Compliance with estate proceedings.

An unauthorized mortgage by an administrator may be challenged.

L. Mortgage by Guardian of Minor Co-Owner

If a co-owner is a minor, a parent or guardian cannot casually mortgage the minor’s share.

Court approval may be required for transactions affecting the minor’s property rights.

A mortgage that prejudices a minor’s property without proper authority may be challenged.

The law gives special protection to minors and incapacitated persons.

LI. Mortgage by Attorney-in-Fact After Principal’s Death

An SPA generally terminates upon the death of the principal, subject to special legal exceptions.

If an agent mortgages property after the principal died, the mortgage may be invalid as to the deceased principal’s share.

Creditors should verify that principals are alive and that authority remains valid.

LII. Mortgage by One Co-Owner to Pay Family Expenses

Sometimes one co-owner mortgages family land to pay for:

Medical expenses of a parent.
Funeral expenses.
Estate taxes.
Property taxes.
Repairs.
Family business debts.
Education of siblings.
Emergency expenses.

Even if the purpose is sympathetic, the co-owner still generally needs authority from the others to mortgage the whole property.

However, if the loan clearly benefited the estate or all co-owners, the creditor or mortgaging co-owner may seek reimbursement, contribution, or ratification depending on the facts.

Benefit does not automatically validate an unauthorized mortgage over other shares, but it may affect equitable claims.

LIII. Unauthorized Mortgage and Family Disputes

An unauthorized mortgage often creates multiple disputes:

Debt dispute between borrower and lender.
Ownership dispute among co-owners.
Validity dispute over mortgage.
Foreclosure dispute.
Possession dispute.
Partition dispute.
Accounting dispute over loan proceeds.
Forgery or falsification complaint.
Notarial irregularity complaint.
Family settlement or mediation issue.

It is important to identify all issues separately.

LIV. Remedies of Non-Consenting Co-Owners

Non-consenting co-owners may consider several remedies.

1. Demand Letter

They may send a demand letter to the mortgaging co-owner and creditor stating that they did not consent and that the mortgage is not recognized as to their shares.

2. Notice to Register of Deeds

They may inquire about annotations and consider appropriate registration remedies such as adverse claim or notice of lis pendens if a case is filed.

3. Action for Annulment or Cancellation of Mortgage

They may file an action to annul or cancel the mortgage insofar as it affects their shares.

4. Action for Quieting of Title

If the mortgage creates a cloud on title, they may seek quieting of title.

5. Action for Partition

They may seek partition to separate their shares and protect their ownership.

6. Injunction

If foreclosure is imminent, they may seek injunctive relief from court.

7. Criminal Complaint

If forged signatures, falsified SPAs, or fraudulent documents were used, criminal complaints may be appropriate.

8. Damages

If the unauthorized mortgage caused loss, reputational harm, expenses, or impairment of property rights, damages may be claimed.

LV. Demand Letter to the Mortgaging Co-Owner

A demand letter may state:

The sender is a co-owner.
The property is co-owned.
The mortgage was executed without consent.
The mortgaging co-owner had no authority to encumber the entire property.
The mortgage should be limited to the mortgagor’s share.
The mortgaging co-owner must account for loan proceeds.
The mortgaging co-owner must assist in correcting records.
The sender reserves legal remedies.

This creates a paper trail.

LVI. Demand Letter to the Creditor

A demand letter to the creditor may state:

The creditor is notified of co-ownership.
The non-consenting co-owners did not authorize the mortgage.
The mortgagor cannot encumber their shares.
Any foreclosure should be limited to the mortgagor’s share.
The creditor should refrain from foreclosing or asserting rights over the entire property.
The co-owners reserve the right to seek injunction, cancellation, and damages.

This is especially important before foreclosure.

LVII. Injunction Against Foreclosure

If the creditor is about to foreclose the entire property, non-consenting co-owners may need urgent court relief.

An injunction may be sought to stop foreclosure temporarily or permanently, depending on the case.

To support injunction, co-owners may show:

They own shares in the property.
They did not consent to the mortgage.
The mortgage affects their property rights.
Foreclosure would cause irreparable injury.
There is urgency.
They have a clear legal right to protect.

Injunction is technical and should be handled promptly.

LVIII. Cancellation of Mortgage Annotation

If a mortgage is annotated on the certificate of title, cancellation may require:

Release or cancellation by creditor.
Court order.
Proof of invalidity.
Settlement with creditor.
Proper registration documents.
Final judgment, if contested.

The Register of Deeds generally will not cancel a registered mortgage merely because one party complains. A proper document or court order is usually needed.

LIX. Quieting of Title

An action for quieting of title may be filed when a document, claim, or encumbrance creates a cloud on ownership.

An unauthorized mortgage may be a cloud on the title of non-consenting co-owners.

The court may determine whether the mortgage is valid, invalid, or limited to the mortgagor’s share.

LX. Partition as a Protective Remedy

Partition may help end uncertainty.

If the family land is co-owned, a co-owner may generally demand partition, unless a legal or valid contractual restriction applies.

Partition can:

Identify each co-owner’s share.
Separate mortgaged share from non-mortgaged shares.
Avoid future unauthorized transactions.
Allow each owner to title his or her portion.
Resolve possession disputes.
Allow sale and division if physical partition is impractical.

If one co-owner mortgaged his share, partition may determine what part or value corresponds to that share.

LXI. Accounting for Loan Proceeds

If one co-owner mortgaged family land and received money, the others may demand accounting.

Questions include:

How much was borrowed?
Who received the proceeds?
Was any amount used for family expenses?
Was any amount used for estate taxes or repairs?
Did other co-owners benefit?
Were receipts kept?
Were payments made?
Is the debt still outstanding?
Were penalties incurred?
Was the loan fraudulent?

Accounting helps determine whether the mortgaging co-owner owes reimbursement to others.

LXII. Liability of the Mortgaging Co-Owner to Other Co-Owners

A co-owner who improperly mortgages family land may be liable to the others for:

Damages.
Reimbursement of expenses.
Attorney’s fees, where legally justified.
Loss caused by foreclosure.
Fraud or bad faith.
Breach of family settlement.
Accounting for proceeds.
Indemnity if others pay to save the property.

If the unauthorized mortgage forces the family to pay the debt to prevent foreclosure, the paying co-owners may seek reimbursement from the co-owner who caused the problem.

LXIII. If the Family Wants to Save the Land

If foreclosure is threatened, family members may consider:

Paying the debt under protest.
Negotiating release of their shares.
Refinancing the loan.
Buying out the creditor’s interest.
Filing injunction.
Filing partition.
Settling with the mortgaging co-owner.
Selling a portion to pay the loan.
Requiring the mortgaging co-owner to reimburse them.
Challenging the mortgage if invalid.

The best option depends on urgency, amount of debt, validity of mortgage, and family goals.

LXIV. Paying the Debt Under Protest

Sometimes non-consenting co-owners pay the debt to prevent foreclosure, even though they dispute liability.

If they do this, they should document that payment is made under protest and without admitting validity of the mortgage as to their shares.

They should secure:

Official receipt.
Release of mortgage.
Cancellation documents.
Written reservation of rights.
Agreement on reimbursement.
Proof of amount paid.
Statement of account.
Confirmation that foreclosure will stop.

Without documentation, later recovery may be harder.

LXV. Settlement With Creditor

A creditor may agree to:

Release the mortgage as to non-consenting shares.
Accept payment from the mortgaging co-owner only.
Restructure the loan.
Accept partial payment.
Cancel foreclosure.
Limit foreclosure to the mortgagor’s share.
Execute release documents.
Participate in partition.

Settlement should be in writing and registered where necessary.

LXVI. What if the Creditor Already Foreclosed?

If foreclosure already occurred, non-consenting co-owners should act quickly.

Possible remedies include:

Challenge foreclosure sale.
Annul foreclosure as to their shares.
Redeem, if legally available.
File action for cancellation of sale.
File quieting of title.
File damages.
Seek injunction against consolidation of title.
Oppose writ of possession, where appropriate.
Assert co-ownership against buyer.
File criminal complaint if documents were forged.

Foreclosure remedies are time-sensitive.

LXVII. Writ of Possession After Foreclosure

After foreclosure and consolidation, a buyer may seek possession.

Non-consenting co-owners may oppose if the buyer’s rights do not cover their shares or if the mortgage was invalid as to them.

However, foreclosure possession proceedings can be technical. Co-owners must act quickly and present proper evidence of ownership and non-consent.

LXVIII. Foreclosure Buyer’s Rights

A foreclosure buyer acquires only the rights validly subject to the mortgage.

If the mortgage affected only one co-owner’s share, the buyer may acquire only that share.

The buyer may then seek partition, but cannot simply erase the rights of the other co-owners.

If the buyer claims good faith and the title showed full ownership in the mortgagor, the dispute may become more complex.

LXIX. When the Mortgage May Bind the Whole Property

A mortgage may bind the whole family land if:

All co-owners signed.
All co-owners validly authorized an attorney-in-fact.
The property had already been partitioned and belonged to the mortgagor.
The mortgagor was the sole owner.
The non-signing parties later ratified the mortgage.
A court authorized the mortgage.
An estate administrator acted with proper authority.
The land was conjugal or community property and required spousal consent was properly given.
The creditor is protected under rules applicable to registered land and innocent mortgagees, depending on facts.
Other legal circumstances validate the encumbrance.

Consent and authority are central.

LXX. When the Mortgage Is Invalid or Limited

A mortgage may be invalid or limited if:

The mortgagor was only a co-owner.
Other co-owners did not consent.
Signatures were forged.
SPA was falsified.
The mortgagor had no title or share.
The property was still part of an unsettled estate.
The court did not authorize an administrator or guardian.
The creditor acted in bad faith.
The mortgage violated restrictions on the land.
The property was covered by special laws limiting encumbrance.
The document was simulated.
The transaction was actually an equitable mortgage, not a sale.
Required spousal consent was absent.
The land was not properly identified.
The mortgage was not in proper form.

LXXI. Family Land With Multiple Generations of Heirs

If the original owners died long ago, the co-ownership may involve many heirs.

Example:

Grandparents die leaving land to five children. Two children later die, leaving their own children. One grandchild mortgages the land.

That grandchild may own only a fractional hereditary share. The mortgage cannot cover the entire property unless all heirs and successors consent.

Multiple-generation estates require careful computation of shares.

LXXII. Determining Shares in Inherited Family Land

To determine whether a person could mortgage a share, identify:

Original registered owner.
Date of death.
Surviving spouse.
Children and descendants.
Whether any heirs predeceased the owner.
Whether there are illegitimate children.
Whether there was a will.
Whether estate was settled.
Whether there were prior sales or waivers.
Whether partition occurred.
Whether subsequent heirs died.
Current living heirs and successors.

A person may think they own one-half, but legally own much less after considering all heirs.

LXXIII. Mortgage by One Branch of the Family

Sometimes one branch occupies and mortgages the entire property, while other branches live elsewhere.

Absence from the land does not necessarily mean loss of ownership.

Non-occupying co-owners may still have rights unless they sold, waived, were excluded by prescription, or lost rights through a valid legal process.

The occupying branch cannot mortgage absent co-owners’ shares without authority.

LXXIV. Waiver of Inheritance or Share

If a co-owner waived his share, the waiver must be examined.

Questions include:

Was the waiver valid?
Was it made after death of the decedent?
Was it in a public instrument?
Was it in favor of all co-heirs or specific persons?
Were taxes considered?
Was it registered?
Was it voluntary?
Was the person of legal age and capacity?
Did the waiver cover the land?
Was there fraud or mistake?

An invalid or incomplete waiver may not eliminate co-ownership rights.

LXXV. Mortgage After Extrajudicial Settlement

If heirs executed an extrajudicial settlement assigning the land to one heir, that heir may mortgage the land if the settlement is valid and properly registered.

However, risks remain if:

Some heirs were excluded.
There were minor heirs without proper representation.
The settlement was fraudulent.
Publication requirements were not followed.
Estate taxes were unpaid.
The settlement is within the period for claims.
The title has not yet been transferred.
There are creditors of the estate.
The settlement is challenged.

A creditor should verify the settlement.

LXXVI. Mortgage of Land Subject to Estate Tax

If the title is still in the decedent’s name and estate tax remains unresolved, registration of mortgage may be difficult or improper.

Estate settlement and tax clearance may be needed before transfer or registration of certain transactions.

A mortgage over estate property without proper settlement may create legal and registration problems.

LXXVII. Banks vs. Private Lenders

Banks usually require stricter documents:

Clean title.
Tax declaration.
Real property tax clearance.
Valid IDs.
Spousal consent.
Board approvals, if corporate.
Authority of signatories.
Appraisal.
Occupancy inspection.
Estate settlement documents.

Private lenders may accept weaker documentation, increasing risk of disputes.

Even if the creditor is a private lender, the law on ownership and consent still applies.

LXXVIII. Informal “Sangla-Tira” Arrangements

In some communities, a borrower gives possession of land or a house to a creditor who lives there until the debt is paid.

This may be called “sangla-tira.”

If the property is co-owned, one co-owner cannot give the creditor possession of the entire property without the consent of the others.

Other co-owners may challenge the creditor’s possession and demand accounting or ejectment, depending on facts.

These arrangements should be documented carefully because they often create disputes over whether the transaction was a mortgage, lease, antichresis, or sale.

LXXIX. Creditor Taking Possession of Co-Owned Land

If a creditor enters and occupies family land based on a deal with only one co-owner, the other co-owners may object.

A co-owner may allow another person to use the property only in a way that does not prejudice the rights of the other co-owners.

If the creditor excludes other co-owners or collects income from the whole property, the non-consenting co-owners may seek:

Accounting.
Share of rentals or fruits.
Ejectment or recovery of possession.
Injunction.
Partition.
Damages.

LXXX. Rental Income From Mortgaged Family Land

If the creditor or mortgaging co-owner collects rent from co-owned land, the other co-owners may demand their share.

Co-owners are generally entitled to proportionate benefits from the property.

A co-owner who exclusively receives income may need to account to others.

LXXXI. Repairs, Taxes, and Expenses

A co-owner who pays real property taxes, repairs, or preservation expenses may seek contribution from other co-owners.

But payment of taxes or repairs does not automatically give the paying co-owner the right to mortgage the whole land.

The proper remedy is contribution or reimbursement, not unilateral encumbrance.

LXXXII. Co-Owner Improvements and Reimbursement

If one co-owner improves the land, that co-owner may have rights to reimbursement or consideration during partition, depending on good faith and benefit to the property.

But improvements do not automatically make the improving co-owner sole owner.

The improving co-owner still cannot mortgage the entire land without consent.

LXXXIII. If Co-Owners Are Abroad

Many unauthorized mortgages happen when some heirs are abroad.

To protect their rights, overseas co-owners should:

Keep certified copies of title and tax declarations.
Monitor property records.
Register adverse claim if appropriate.
Avoid signing broad SPAs.
Use consularized or apostilled documents carefully.
Communicate in writing with family representatives.
Demand copies of all proposed transactions.
Revoke old SPAs if no longer intended.
Appoint a trusted attorney-in-fact with limited authority.
Check title annotations periodically.

Broad, open-ended SPAs are risky.

LXXXIV. Preventing Unauthorized Mortgages

Families can prevent disputes by:

Settling the estate promptly.
Partitioning inherited land.
Transferring titles properly.
Registering co-ownership accurately.
Keeping owner’s duplicate title secure.
Avoiding blank signed documents.
Avoiding broad SPAs.
Monitoring title annotations.
Paying taxes transparently.
Keeping written family agreements.
Recording possession arrangements.
Requiring unanimous written consent for loans.
Registering adverse claims where appropriate.
Consulting counsel before encumbering land.

LXXXV. Importance of Owner’s Duplicate Certificate of Title

For titled land, the owner’s duplicate certificate of title is important in registering voluntary transactions such as mortgages.

If one co-owner holds the owner’s duplicate, others may be vulnerable if that person attempts unauthorized transactions.

Co-owners should agree on safekeeping, or request issuance of proper titles after partition.

If the title is lost or withheld, legal steps may be necessary.

LXXXVI. Can One Co-Owner Refuse All Mortgages?

Yes. A co-owner cannot be forced to mortgage his or her share without legal basis.

If the family wants to use the entire land as collateral, all co-owners whose shares are affected must consent.

If one co-owner refuses, the others may mortgage only their shares, unless a court or law provides otherwise.

LXXXVII. Majority Consent Is Not Enough for Mortgage of Entire Property

In co-ownership, acts of administration may sometimes be decided by majority interest, but acts of ownership or alteration generally require consent of all affected co-owners.

A mortgage is an act of ownership affecting property rights.

Therefore, majority consent is not enough to mortgage the entire co-owned land if the non-consenting co-owner’s share will be encumbered.

LXXXVIII. Co-Ownership Management vs. Encumbrance

Co-owners may make decisions about administration, such as ordinary repairs or management.

But mortgaging land is not ordinary administration. It creates a security interest and may lead to foreclosure.

Because it can result in loss of property, mortgage generally requires ownership authority or consent of affected owners.

LXXXIX. Mortgage by Corporation or Family Company

Sometimes family land is transferred to a family corporation, or the title is in a corporation controlled by relatives.

If the corporation owns the land, the issue is no longer ordinary co-ownership among heirs but corporate authority.

A mortgage may require:

Board approval.
Shareholder approval in certain cases.
Corporate secretary’s certificate.
Compliance with articles and bylaws.
Authority of signatory.
Bank or creditor due diligence.
Consideration of whether the property is substantially all corporate assets.

Family members who are shareholders do not directly own corporate land. The corporation does.

XC. Mortgage of Property Held in Trust

If one family member holds title in trust for others, unauthorized mortgage raises trust issues.

Beneficiaries may seek:

Recognition of trust.
Reconveyance.
Cancellation of mortgage, if creditor was in bad faith.
Damages against trustee.
Accounting.
Injunction.

If the creditor was an innocent mortgagee relying on title, the remedy may be more difficult and may shift to damages against the trustee.

XCI. Buyer or Creditor Dealing With Family Land: Due Diligence Checklist

A creditor should verify:

Current certificate of title.
All registered owners.
Civil status of owners.
Spousal consent.
Whether owner is alive.
Whether land is inherited.
Whether estate is settled.
Whether occupants match registered owners.
Tax declarations and real property taxes.
Existing annotations.
Adverse claims.
Notices of lis pendens.
Possession by relatives or tenants.
Validity of SPAs.
Identity and capacity of signatories.
Land restrictions.
Family home issues.
Agrarian or ancestral land issues.
Court cases.
Actual inspection.

Failure to investigate may defeat a claim of good faith.

XCII. Co-Owner Discovering Unauthorized Mortgage: Immediate Checklist

If a co-owner discovers an unauthorized mortgage, do the following:

Get a certified true copy of the title.
Check all annotations.
Get a copy of the mortgage document.
Identify who signed.
Check if any SPA was used.
Verify notarization.
Check loan amount and creditor.
Determine if foreclosure has started.
Gather proof of co-ownership.
Gather death certificates and heirship documents, if inherited.
Secure tax declarations and payment records.
Get statements from non-consenting co-owners.
Send written objection to creditor.
Consider adverse claim or legal annotation.
Consult counsel immediately if foreclosure is imminent.

XCIII. Documents Needed to Prove Co-Ownership

Useful documents include:

Certificate of title.
Deed of sale or donation.
Death certificate of original owner.
Birth certificates of heirs.
Marriage certificates.
Extrajudicial settlement.
Tax declarations.
Real property tax receipts.
Estate documents.
Prior partition agreements.
Family agreements.
Court orders.
Possession evidence.
Photos of improvements.
Utility bills.
Barangay certifications.
Receipts for construction or repairs.
Correspondence acknowledging co-ownership.
Affidavits of relatives or neighbors.
Survey plans.

XCIV. Sample Letter to Creditor

A non-consenting co-owner may write:

We are co-owners of the property covered by Transfer Certificate of Title No. ________. We recently learned that a mortgage was executed over the property by ________ without our knowledge, consent, or authority. Please be informed that the said person has no authority to mortgage our shares or interests in the property. Any mortgage, foreclosure, or enforcement action should not affect our ownership rights. We demand that you provide copies of the mortgage documents, loan documents, alleged authority, and statement of account, and that you refrain from enforcing the mortgage against our shares. We reserve all rights and remedies under law.

This should be adapted to the facts and sent with proof of receipt.

XCV. Sample Letter to Mortgaging Co-Owner

We learned that you executed or caused the execution of a mortgage over the family property located at ________, covered by Title No. ________, without our consent. You had no authority to encumber our shares in the property. We demand that you immediately provide a full accounting of the loan, identify the creditor, disclose all documents signed, and take steps to cancel or limit the mortgage to your own share. We reserve the right to file civil, criminal, and other actions for protection of our rights.

XCVI. Common Misconceptions

Misconception 1: One heir can mortgage the entire inherited land because the title is still undivided.

Wrong. One heir generally owns only an undivided share and cannot encumber the shares of others.

Misconception 2: The oldest sibling can mortgage family land for everyone.

Wrong, unless properly authorized.

Misconception 3: Paying real property taxes makes one sibling sole owner.

Wrong. Tax payments are evidence but not conclusive ownership.

Misconception 4: A co-owner occupying the land can mortgage it.

Only his or her share may generally be mortgaged, not the whole land.

Misconception 5: If the mortgage is registered, it is automatically valid against everyone.

Wrong. Registration does not cure forgery, lack of ownership, or lack of authority.

Misconception 6: Majority of heirs can mortgage the entire land.

Wrong. A mortgage affecting the whole property generally requires consent of all affected owners.

Misconception 7: A family member abroad is deemed to have consented.

Wrong. Consent must be proven.

Misconception 8: The creditor can evict all relatives if one co-owner fails to pay.

Not necessarily. The creditor’s rights are limited to what was validly mortgaged.

Misconception 9: A pledge of land works like pawnshop collateral.

Not exactly. Land is generally mortgaged, not pledged.

Misconception 10: A notarized document is always valid.

Wrong. Notarization does not validate forged signatures or lack of authority.

XCVII. Practical Examples

Example 1: One Sibling Mortgages Inherited Land

Four siblings inherit land. One sibling mortgages the entire land to a private lender. The other siblings did not sign.

The mortgage generally binds only the signing sibling’s undivided share. The other siblings may challenge the mortgage as to their shares.

Example 2: Fake SPA Used

A relative uses a fake SPA to mortgage land while two heirs are abroad.

The mortgage may be void as to the heirs whose authority was forged. Criminal and civil remedies may be available.

Example 3: Title in One Sibling’s Name

The land is titled in one sibling’s name, but all siblings claim they contributed to purchase. The titled sibling mortgages the land to a bank.

The bank may claim good faith reliance on the title. The siblings must prove trust, co-ownership, and possibly bad faith or notice. This case is more difficult.

Example 4: Land Still in Deceased Parent’s Name

A child mortgages land still titled in the deceased mother’s name. There are five heirs.

The child cannot mortgage the entire estate property without authority from the other heirs or court. The creditor should have investigated.

Example 5: Creditor Occupies Land Under “Sangla”

One co-owner borrows money and lets the creditor occupy the whole family land. Other co-owners object.

The creditor may not exclude the other co-owners from their rights. The non-consenting co-owners may seek possession, accounting, or partition.

XCVIII. Best Practices for Co-Owners

Co-owners should:

Formalize inheritance settlement.
Partition property if possible.
Register titles properly.
Keep written records of family agreements.
Require unanimous written consent for mortgages.
Avoid blank signatures.
Limit SPAs.
Monitor title annotations.
Keep copies of title and tax records.
Record contributions and improvements.
Communicate clearly with relatives abroad.
Act quickly upon discovering unauthorized mortgage.
Use written objections.
Seek injunction if foreclosure is imminent.
Consider partition to prevent future disputes.

XCIX. Best Practices for Creditors

Creditors should:

Verify title.
Verify ownership.
Verify civil status.
Require consent of all registered owners.
Require spousal consent where needed.
Investigate possession.
Verify estate settlement if owner is deceased.
Avoid relying on suspicious SPAs.
Check notarial details.
Require all heirs to sign when property is inherited.
Avoid accepting mortgage of unpartitioned family land without clear authority.
Conduct property inspection.
Check adverse claims and litigation.
Ensure loan documents are transparent.
Register mortgage properly.

A creditor who ignores family co-ownership risks receiving only a limited or defective security.

C. Key Takeaways

A mortgage or pledge of family land without co-owner consent is legally risky and often ineffective beyond the share of the person who signed.

The most important points are:

A co-owner owns only an undivided share before partition.
A co-owner may generally mortgage only his or her own share.
A co-owner cannot mortgage the shares of others without consent or authority.
One heir cannot mortgage the entire inherited land unless all heirs consent or legal authority exists.
Land is generally mortgaged, not pledged, although informal “sangla” arrangements may be legally examined based on their true nature.
Registration of a mortgage does not cure forgery, lack of ownership, or lack of authority.
A forged signature or fake SPA can make the mortgage void as to the affected co-owner.
A creditor may foreclose only what was validly mortgaged.
A foreclosure buyer of one co-owner’s share may become a co-owner, not owner of the whole land.
Non-consenting co-owners may seek cancellation, quieting of title, partition, injunction, damages, or criminal remedies.
If foreclosure is imminent, urgent court action may be needed.
Family land should be settled, partitioned, and properly titled to prevent unauthorized encumbrances.
Creditors must exercise diligence, especially where land is inherited, occupied by relatives, or still titled in a deceased person’s name.
Consent should be written, specific, notarized, and supported by valid authority.
The safest rule is that all co-owners should sign or validly authorize any mortgage affecting the entire property.

In short, one family member cannot lawfully risk the entire family land for a personal loan without the consent of the others. At most, that person can usually encumber only his or her own rights or undivided share. Non-consenting co-owners should act promptly to protect title, oppose foreclosure, preserve evidence, and seek appropriate legal remedies.