A Philippine Legal Article

I. Introduction

In the Philippines, family members often handle property matters for one another. A child may negotiate the sale of a parent’s land. A sibling may talk to buyers on behalf of another sibling working abroad. A spouse, cousin, aunt, uncle, or other relative may receive payments, sign documents, or represent that they are “authorized” to sell property belonging to another.

This arrangement is common, especially where the owner is elderly, abroad, ill, unavailable, or unfamiliar with legal paperwork. But under Philippine law, kinship alone does not give a person authority to sell another person’s property. A relative is not automatically an agent. A family relationship does not substitute for written authority. In sales of real property, the law generally requires a clear and specific written authorization, commonly called a Special Power of Attorney, or SPA.

A sale made by a relative without proper authority may be unenforceable, void, voidable, ineffective against the true owner, or may expose the relative and buyer to civil or even criminal consequences, depending on the facts.

This article explains the legal framework, risks, remedies, and practical issues surrounding a property sale by a relative without a Special Power of Attorney in the Philippine context.

II. Basic Rule: The Owner Must Sell, or an Authorized Agent Must Sell

The right to sell property belongs to the owner. A person may sell property personally, or through an agent. But when the subject matter is real property, such as land, a house and lot, condominium unit, or building, Philippine law requires more than verbal permission in many situations.

An agent who sells land or any interest in land must have authority in writing. The authority must also be sufficiently specific. A general statement that someone may “manage,” “assist,” or “take care of” property is usually not enough to authorize a sale.

The controlling principle is simple:

No one can validly sell another person’s real property without the owner’s consent or lawful authority.

A relative may help find a buyer, introduce parties, or assist with errands. But signing a Deed of Sale, receiving the purchase price as seller’s representative, or committing the owner to transfer title requires legal authority.

III. What Is a Special Power of Attorney?

A Special Power of Attorney is a written instrument by which a principal authorizes another person, called the attorney-in-fact or agent, to perform a specific act on the principal’s behalf.

In property sales, the SPA usually authorizes the agent to:

negotiate the sale;
sign the Contract to Sell, Deed of Absolute Sale, or other conveyance documents;
receive payments;
deliver possession;
process tax payments;
sign BIR, Register of Deeds, assessor’s office, homeowners’ association, developer, or condominium corporation documents;
request certified true copies of title and tax declarations;
cause the transfer of title; and
perform all acts necessary to complete the sale.

For real estate transactions, the SPA is commonly notarized. If the owner is abroad, the SPA is usually notarized or acknowledged before the Philippine Embassy or Consulate, or otherwise authenticated/apostilled depending on the jurisdiction and documentary requirements of the receiving office.

IV. Why a Special Power of Attorney Is Required for Sale of Real Property

Under the Civil Code, certain acts require special authority. These include acts of ownership or disposition, such as selling, mortgaging, or otherwise encumbering real property. A sale is not a mere act of administration. It is an act of dominion because it transfers ownership.

The law is strict because real property is valuable, permanent, and title-based. A mistaken or unauthorized sale can cause serious harm to owners, buyers, heirs, banks, and subsequent purchasers.

An SPA protects:

The owner, by ensuring that property cannot be sold without clear consent.

The buyer, by proving that the person signing for the seller has authority.

The government offices, by providing documentary basis for transfer.

The agent, by defining the scope of authority and avoiding accusations of fraud or misrepresentation.

V. Relative Relationship Is Not Authority

A common misconception is that a family member may sell property because they are related to the owner. This is wrong.

A spouse does not automatically have authority to sell the exclusive property of the other spouse. A child does not automatically have authority to sell a parent’s land. A sibling does not automatically have authority to sell a co-heir’s share. A caretaker relative does not automatically have authority to dispose of property. Even a person living in the property or paying taxes on it may lack authority to sell.

Authority must come from law, ownership, court appointment, or written authorization.

Examples:

A daughter cannot sell her mother’s land merely because the mother is abroad.

A brother cannot sell land titled in his sister’s name just because he has been managing it.

A spouse cannot sell property solely owned by the other spouse without proper consent or authority.

An heir cannot sell the entire inherited property if the estate has several co-heirs, unless authorized by all or unless he sells only his own hereditary rights subject to legal rules.

A relative who possesses the owner’s title does not automatically have authority to sell. Possession of the owner’s duplicate certificate of title may raise suspicion if there is no SPA or written authority.

VI. Sale by a Relative Without SPA: Is It Valid?

The answer depends on the facts. Philippine law distinguishes among several possible situations.

1. The Relative Had No Authority at All

If a relative signs a Deed of Sale for property owned by another person without written authority, the sale is generally ineffective against the owner.

The buyer cannot acquire ownership from someone who had no authority to sell. The true owner may refuse to honor the sale, recover the property, seek cancellation of documents, or sue for damages.

The unauthorized relative may be liable to the buyer for misrepresentation, breach of warranty of authority, or damages.

2. The Owner Later Ratifies the Sale

An unauthorized act may be cured if the true owner later ratifies it. Ratification means the owner knowingly accepts, confirms, or adopts the sale despite the lack of prior authority.

Ratification may be express, such as signing a written confirmation or new deed. It may also be implied from conduct, such as accepting the purchase price with full knowledge of the transaction.

However, ratification must be clear. The owner must know the material facts. Mere silence, family relationship, or failure to immediately object does not always amount to ratification.

3. The Relative Was a Co-Owner

If the relative owns a share in the property, the situation is different. A co-owner may generally sell his or her undivided share, but not the shares of the other co-owners without authority.

For example, if four siblings inherited land and one sibling sells the entire land without authority from the others, the sale may be valid only as to the selling sibling’s share and ineffective as to the shares of the non-consenting siblings.

The buyer may become a co-owner only to the extent of the selling heir’s share, unless the other co-owners later consent or ratify.

4. The Relative Was an Heir but the Estate Was Not Yet Settled

Heirs acquire rights upon the death of the decedent, but estate settlement, partition, taxes, and title transfer may still be necessary. An heir may sell hereditary rights, but cannot unilaterally sell specific property as if exclusively owned where other heirs exist and partition has not occurred.

Buyers should be careful when a relative claims, “This land is inherited; I can sell it.” The buyer must check who the heirs are, whether the estate has been settled, whether estate tax has been paid, whether there is an extrajudicial settlement, and whether all heirs consent.

5. The Relative Was a Court-Appointed Representative

If the owner is deceased, incapacitated, a minor, or under guardianship, a court-appointed administrator, executor, guardian, or representative may have authority to act, but usually within limits and often subject to court approval.

In such cases, the authority comes not from an SPA but from a court order or letters of administration/guardianship. Even then, sale of property may require specific court approval.

6. The Relative Acted Under Apparent Authority

Sometimes a buyer argues that the relative appeared authorized because the owner allowed the relative to manage the property, receive rent, pay taxes, hold documents, or negotiate with buyers.

Apparent authority may matter in some agency disputes, but for sale of real property, the requirement of written authority is strict. A buyer who deals with a non-owner must verify written authority. Reliance on family relationship or verbal assurances is risky.

VII. Difference Between Authority to Negotiate and Authority to Sell

A relative may be allowed to look for buyers or negotiate terms without being authorized to sign the sale.

This distinction is important.

A person may be a broker, messenger, negotiator, caretaker, or family representative. That does not necessarily make the person an attorney-in-fact authorized to transfer ownership.

Authority to negotiate means the person can discuss price and terms.

Authority to sell means the person can bind the owner, sign documents, and complete the conveyance.

For real estate, the latter generally requires a written SPA.

VIII. General Power of Attorney vs. Special Power of Attorney

A General Power of Attorney gives broad authority to manage affairs, but it may not be enough to sell real property unless it specifically includes authority to sell.

A Special Power of Attorney identifies particular acts. For sale of land, the SPA should expressly authorize the sale of the specific property or at least clearly authorize sale of real properties owned by the principal.

A vague authorization such as “to administer my properties” or “to act on my behalf” may be insufficient. Sale is an act of ownership, not ordinary administration.

A well-drafted SPA should identify:

the principal;
the attorney-in-fact;
the property covered;
the title number, tax declaration number, condominium certificate of title, or other identifying details;
the authority to sell;
the authority to sign documents;
the authority to receive payment, if intended;
the authority to process transfer documents;
the date and place of execution;
notarization or consular acknowledgment, as applicable.

IX. The Statute of Frauds and Sale Through an Agent

The Statute of Frauds requires certain agreements, including sales of real property or interests therein, to be in writing to be enforceable. Separately, an agent’s authority to sell real property must also be in writing.

This means there are two related concerns:

First, the sale itself should be in writing.

Second, if someone signs for the seller, the authority of that person must also be in writing.

A written deed signed by an unauthorized relative does not solve the authority problem. The deed may be written, but the signer may have no authority.

X. Notarization Does Not Cure Lack of Authority

A notarized Deed of Sale is generally entitled to evidentiary weight as a public document. But notarization does not make an unauthorized sale valid.

If the person who signed as seller or representative had no authority, notarization does not create ownership or agency.

A notarized document can still be challenged for fraud, forgery, lack of authority, lack of consent, simulation, or other legal defects.

Buyers should not rely on notarization alone. They must verify title, identity, authority, marital consent, tax status, possession, liens, and adverse claims.

XI. Possession of the Owner’s Title Is Not Enough

A buyer may think the relative is authorized because the relative has the owner’s duplicate certificate of title. This is dangerous.

Possession of title does not equal ownership. It also does not equal authority to sell.

The title may have been entrusted for safekeeping, tax payment, loan processing, estate settlement, or other limited purposes. It may even have been obtained without the owner’s consent.

A prudent buyer must require the owner’s personal appearance or a valid SPA.

XII. Sale of Conjugal, Community, or Spousal Property

Special issues arise when the property is owned by spouses or forms part of the conjugal partnership or absolute community of property.

Depending on the applicable property regime, sale of family property may require the consent of both spouses. One spouse may not simply sell conjugal or community property without the consent of the other, except in limited legally recognized situations.

Where property is exclusively owned by one spouse, the other spouse does not automatically become authorized to sell it. If the non-owner spouse signs without authority, the sale may be challenged.

For buyers, it is important to examine:

the registered owner on the title;
the marital status stated on the title;
the date of marriage;
the property regime;
whether the spouse must consent;
whether both spouses must sign;
whether one spouse is acting under SPA for the other.

XIII. Sale of Property Owned by a Parent

Children often sell or attempt to sell property owned by elderly parents. This is legally sensitive.

A child may sell a parent’s property only if:

the parent personally signs the deed; or
the parent executes a valid SPA; or
the child has lawful authority through guardianship, court order, or similar legal basis.

If the parent is already mentally incapacitated, an SPA may be invalid if the parent lacked capacity at the time of signing. In that situation, court guardianship may be necessary.

A sale made by a child using a forged signature, fabricated SPA, or coerced authorization may be attacked and may result in civil and criminal liability.

XIV. Sale of Property by One Heir Without the Others

One of the most common disputes involves inherited property.

When a person dies leaving land, the heirs may become co-owners before partition. No single heir may sell the entire property as if he or she were the sole owner unless all heirs consent or authorize the sale.

One heir may generally dispose of his or her hereditary rights or undivided interest, but this does not give the buyer exclusive ownership over the whole property.

Example:

A father dies leaving a parcel of land to five children. One child sells the entire land to a buyer without the consent of the other four. The sale cannot bind the other heirs’ shares. The buyer may only step into the selling heir’s rights, subject to partition and other legal consequences.

Buyers of inherited property should require:

death certificate of the registered owner;
proof of heirs;
extrajudicial settlement or judicial settlement documents;
estate tax clearance or proof of estate tax compliance;
signatures of all heirs or valid SPAs;
publication requirements, where applicable;
transfer documents from the BIR and Register of Deeds;
confirmation of possession and absence of adverse claims.

XV. Sale by a Caretaker Relative

A caretaker relative may have physical possession of property, may collect rent, pay real property tax, or deal with neighbors. These acts do not prove authority to sell.

Management and caretaking are acts of administration. Sale is an act of disposition. Authority to administer does not automatically include authority to sell.

A buyer dealing with a caretaker must require proof of ownership or written authority from the owner.

XVI. Sale by a Relative of an Overseas Filipino Owner

Many Philippine property owners live abroad. Relatives in the Philippines often assist in selling their properties.

In such cases, the owner abroad should usually execute an SPA that is acceptable to Philippine offices and parties. Depending on where it is executed, it may need consular acknowledgment or apostille/authentication.

The SPA should be checked by the buyer, notary, broker, bank, BIR, and Register of Deeds before closing.

Common problems include:

SPA not notarized or improperly notarized;
SPA not consularized or apostilled when required;
SPA does not identify the property;
SPA authorizes administration but not sale;
SPA authorizes sale but not receipt of payment;
SPA has expired or was revoked;
principal was already deceased when the deed was signed;
SPA was photocopied but original was not produced;
attorney-in-fact exceeded the authority granted.

XVII. What If the Owner Dies After Issuing the SPA?

Agency is generally extinguished by the death of the principal. If the owner dies before the sale is completed, the attorney-in-fact’s authority may terminate, subject to specific legal exceptions.

A deed signed after the owner’s death under an SPA may be challenged because the agent no longer had authority.

After death, the property belongs to the estate and heirs, subject to settlement. Sale generally requires action by heirs, executor, administrator, or court-authorized representative, depending on the circumstances.

Buyers must verify that the principal is alive at the time of signing and closing.

XVIII. What If the SPA Is Forged?

A forged SPA gives no authority. A forged signature is generally void and produces no legal effect against the person whose signature was forged.

A buyer who relied on a forged SPA may lose the property and may have to pursue the impostor or unauthorized relative for recovery of money and damages.

Forgery may also expose the wrongdoer to criminal liability, including falsification, estafa, or use of falsified documents, depending on the facts.

Because forgery is a serious allegation, it must be proven by clear and convincing evidence. Courts usually compare signatures, examine witnesses, evaluate notarial records, and consider surrounding circumstances.

XIX. What If the Buyer Already Paid the Relative?

Payment to an unauthorized relative may not bind the owner unless the owner authorized receipt of payment or later ratified it.

If the buyer paid the relative without verifying authority, the buyer may have a claim against the relative for return of money, damages, or fraud. But the buyer cannot automatically force the owner to honor the sale.

Even where an SPA exists, the buyer should check whether the SPA specifically authorizes the attorney-in-fact to receive the purchase price. Authority to sign documents may not always include authority to receive payment, especially large sums.

Best practice is to pay the owner directly, or pay through a documented escrow or manager’s check arrangement clearly authorized by the owner.

XX. Buyer in Good Faith: Does It Protect the Buyer?

Philippine land law recognizes protection for buyers in good faith in certain circumstances, especially involving registered land. However, good faith has limits.

A buyer dealing with someone who is not the registered owner has a duty to verify that person’s authority. Failure to demand an SPA or confirm the owner’s consent may defeat a claim of good faith.

Good faith is not blind reliance. A buyer cannot ignore red flags such as:

seller is not the registered owner;
seller is merely a relative;
owner is abroad or unavailable;
SPA is missing;
SPA is vague;
signatures appear inconsistent;
title is old or has annotations;
property is occupied by someone else;
price is unusually low;
heirs or family members object;
tax declarations do not match the title;
deed is rushed;
payment is requested in cash to the relative.

A buyer who fails to investigate may be considered negligent.

XXI. Red Flags in a Relative-Led Property Sale

A buyer should be cautious when:

The relative says, “The owner is my parent/sibling/spouse, so no SPA is needed.”

The relative refuses to let the buyer talk to the owner.

The relative only presents photocopies.

The relative has the title but no written authority.

The owner is abroad but there is no consularized or apostilled SPA.

The SPA is broad but does not specifically authorize sale.

The relative wants payment made to his or her personal account.

The price is far below market value.

The property is inherited but not all heirs are signing.

The registered owner is deceased but the deed is being signed by a relative under an old SPA.

The notary is unknown, unavailable, or from a place unrelated to the transaction.

The title has annotations, adverse claims, liens, mortgages, notices of lis pendens, or restrictions.

Any of these should prompt further legal review.

XXII. Civil Liability of the Unauthorized Relative

A relative who sells property without authority may be civilly liable.

Possible civil claims include:

return of money received;
damages for fraud or bad faith;
attorney’s fees, where legally justified;
cancellation or annulment of documents;
reconveyance;
quieting of title;
injunction;
accounting;
breach of warranty of authority;
unjust enrichment.

The owner may sue to protect title and possession. The buyer may sue to recover payment from the unauthorized relative.

If the relative benefited from the transaction, the court may order restitution.

XXIII. Criminal Liability

Depending on the facts, an unauthorized sale may involve criminal liability.

Possible offenses may include:

Estafa, if the relative defrauded the buyer by pretending to have authority or ownership.

Falsification of public or commercial documents, if signatures, notarizations, acknowledgments, or documents were falsified.

Use of falsified documents, if the relative knowingly used a forged SPA or deed.

Other fraud-related offenses, depending on the method used.

Criminal liability depends on proof of deceit, damage, falsification, intent, and other elements. Not every unauthorized sale is automatically criminal. Some cases may be civil disputes, especially where there was misunderstanding or unclear authority. But where the relative knowingly misrepresented authority and took money, criminal exposure is significant.

XXIV. Remedies of the True Owner

If a relative sold property without authority, the true owner may consider the following remedies:

1. Written Demand

The owner may send a demand letter to the relative, buyer, broker, or other parties, demanding cessation of the sale, return of documents, cancellation of the transaction, or recognition of ownership.

2. Notice to Buyer

If the sale is not yet completed, the owner should notify the buyer in writing that the relative has no authority.

3. Notice to Broker, Developer, Bank, or HOA

If third parties are involved, the owner may inform them not to process any sale without the owner’s personal consent.

4. Adverse Claim

Where appropriate, an adverse claim or other annotation may be considered to protect the owner’s interest, subject to legal requirements.

5. Cancellation or Annulment of Deed

The owner may seek judicial cancellation or annulment of unauthorized documents.

6. Reconveyance

If title has already been transferred, the owner may sue for reconveyance, subject to applicable rules and prescription periods.

7. Quieting of Title

If there is a cloud on title caused by an unauthorized deed, the owner may file an action to quiet title.

8. Injunction

If transfer, construction, possession, or further sale is threatened, the owner may seek injunctive relief.

9. Criminal Complaint

If there was forgery, fraud, or falsification, the owner may file a criminal complaint.

10. Administrative Complaint Against Notary

If notarization was improper, a complaint may be filed against the notary, depending on the facts.

XXV. Remedies of the Buyer

A buyer who paid a relative without valid authority may have remedies, but usually against the unauthorized relative rather than the true owner.

Possible remedies include:

demand for refund;
civil action for sum of money;
damages;
rescission or cancellation;
criminal complaint for estafa or falsification, if supported by evidence;
complaint against broker or intermediary, where applicable;
annotation or notice, if legally available and justified;
settlement negotiations with the true owner.

If the true owner is willing to ratify the sale, the buyer may complete the transaction by obtaining proper documents. But the owner cannot generally be forced to ratify an unauthorized sale.

XXVI. Ratification: How an Unauthorized Sale May Be Cured

Ratification is the owner’s adoption of an unauthorized act.

Ratification may occur when the owner:

signs a new deed confirming the sale;
executes a confirmatory SPA;
accepts the purchase price with full knowledge;
allows transfer to proceed despite knowledge;
expressly confirms the relative’s act in writing.

Ratification must be voluntary and informed. If the owner was deceived, coerced, incapacitated, or unaware of the material facts, ratification may be invalid.

For safety, ratification should be in writing and notarized. If title transfer is involved, the Register of Deeds, BIR, and other offices may require proper documentation.

XXVII. Effect on the Register of Deeds and Title Transfer

The Register of Deeds generally requires documents showing authority when a deed is signed by an attorney-in-fact. A Deed of Sale signed by a representative should be accompanied by the SPA.

If there is no SPA, the Register of Deeds may refuse registration. If registration somehow occurs through defective or fraudulent documents, the transfer may later be challenged in court.

Registration does not always cure a void or unauthorized transaction. A certificate of title is strong evidence of ownership, but it is not a shield for fraud or bad faith in all circumstances.

XXVIII. BIR and Tax Processing Issues

Real estate sales require tax processing, including capital gains tax or creditable withholding tax, documentary stamp tax, transfer tax, and registration fees, depending on the transaction.

If the seller is represented by an attorney-in-fact, the BIR and local government offices may require the SPA and proof of authority.

A buyer who proceeds without proper authority may pay taxes for a transaction that cannot be completed. Recovering those amounts may be difficult.

XXIX. Broker Liability and Professional Responsibility

Brokers and agents involved in a relative-led sale should verify authority. A licensed real estate broker should not market or close a property sale based merely on a relative’s verbal claim.

Prudent brokers should require:

copy of title;
government IDs of owner and representative;
notarized SPA;
marital consent documents, if applicable;
proof of authority from heirs or co-owners;
tax declaration;
real property tax clearance;
authority to sell or brokerage agreement signed by the owner.

A broker who knowingly participates in an unauthorized sale may face civil liability, administrative consequences, or reputational harm.

XXX. Due Diligence Checklist for Buyers

Before buying property through a relative of the owner, a buyer should verify:

Title Obtain a certified true copy from the Register of Deeds.
Registered Owner Confirm that the seller is the person named on title.
Authority of Representative Require a notarized SPA or proper court/estate documents.
Scope of SPA Confirm it specifically authorizes sale of the property.
Authority to Receive Payment Confirm whether payment may be made to the attorney-in-fact.
Owner’s Identity and Life Status Verify that the principal is alive and legally capable.
Marital Status Check whether spousal consent is required.
Co-Ownership Determine whether other co-owners must sign.
Inheritance Issues If registered owner is deceased, require estate documents.
Possession Inspect who occupies the property.
Annotations Check mortgages, adverse claims, liens, restrictions, and lis pendens.
Taxes Check real property tax payments and tax declarations.
Payment Trail Use traceable payment methods.
Notarial Validity Check the notary’s details and notarial register if necessary.
Legal Review Have counsel examine documents before payment.

XXXI. Best Practices for Owners

An owner who wants a relative to sell property should:

execute a clear SPA;
specify the property;
specify minimum price or acceptable terms, if desired;
specify whether the agent may receive payment;
require accounting;
give only certified copies when possible;
keep the owner’s duplicate title secure;
inform the buyer directly of the authority;
revoke the SPA in writing if authority is withdrawn;
notify relevant parties of revocation.

Owners should avoid signing blank documents or giving relatives unrestricted control over title documents.

XXXII. Best Practices for Relatives Acting for Owners

A relative assisting in a sale should:

obtain written authority before negotiating seriously;
avoid representing ownership if not the owner;
disclose agency status to buyers;
avoid receiving money unless expressly authorized;
issue receipts only in proper capacity;
keep records;
remit funds promptly;
avoid signing documents beyond authority;
consult a lawyer if the property is inherited or co-owned;
respect revocation or limits of authority.

A relative who exceeds authority may personally become liable.

XXXIII. Best Practices for Buyers

A buyer should never rely on statements such as:

“Trust me, I am the owner’s son.”

“My sister is abroad but she knows about this.”

“My mother gave me the title.”

“We do not need an SPA because we are family.”

“The owner will sign later.”

“Just pay the reservation fee first.”

Instead, the buyer should insist on documentary proof before paying substantial amounts.

A safe approach is:

First, verify title.

Second, speak directly with the owner if possible.

Third, require a valid SPA.

Fourth, have the deed reviewed.

Fifth, pay through traceable means.

Sixth, release full payment only upon proper execution and transfer safeguards.

XXXIV. Sample SPA Clauses for Property Sale

An SPA for sale of real property should not be vague. It may include clauses such as:

“To sell, transfer, and convey the property covered by Transfer Certificate of Title No. ______, located at ______, under such terms and conditions as my attorney-in-fact may deem proper, subject to the minimum price of ______.”

“To sign and execute the Deed of Absolute Sale, Contract to Sell, acknowledgment receipts, tax declarations, BIR forms, transfer documents, and all other papers necessary for the sale and transfer of the property.”

“To receive the purchase price and issue receipts therefor.”

“To pay taxes, fees, and charges necessary for the sale and transfer.”

“To represent me before the Bureau of Internal Revenue, local treasurer’s office, assessor’s office, Register of Deeds, homeowners’ association, condominium corporation, banks, and other offices.”

The exact wording should be adapted to the transaction.

XXXV. Common Defenses in Unauthorized Sale Cases

A relative accused of unauthorized sale may argue:

the owner verbally authorized the sale;
the owner later ratified the sale;
the relative was a co-owner;
the buyer knew the limits of authority;
the transaction was only a negotiation, not a completed sale;
the money received was not purchase price;
the SPA existed but was lost;
the owner is estopped from denying authority;
the sale involved only the relative’s share;
the complaint is a family dispute being converted into a legal case.

The success of these defenses depends on evidence.

XXXVI. Common Claims by Owners

Owners commonly argue:

no SPA was issued;
signature was forged;
SPA was limited to administration;
SPA did not authorize sale;
SPA had been revoked;
principal was incapacitated;
principal had already died;
property was co-owned;
spousal consent was absent;
buyer was in bad faith;
price was grossly inadequate;
documents were falsified;
title was transferred through fraud.

The outcome depends on documents, testimony, registry records, notarial records, possession, and conduct of the parties.

XXXVII. Prescription and Timeliness

Legal remedies may be subject to prescriptive periods, laches, and procedural rules. The applicable period depends on the nature of the action: annulment, reconveyance, quieting of title, damages, recovery of possession, fraud, implied trust, or criminal complaint.

An owner or buyer should act promptly. Delay can complicate recovery, especially if the property is transferred to subsequent buyers or encumbered to a bank.

XXXVIII. Practical Scenarios

Scenario 1: Son Sells Mother’s Land Without SPA

The mother owns land in her name. Her son finds a buyer, signs a deed, and receives payment. The mother never authorized him in writing.

The sale is not binding on the mother unless she ratifies it. The buyer’s remedy is likely against the son.

Scenario 2: Brother Sells Inherited Property

Five siblings inherit land. One brother sells the entire property without the others’ consent.

The sale may bind only the brother’s share. The buyer cannot acquire the shares of the non-consenting siblings.

Scenario 3: Wife Sells Husband’s Exclusive Property

The title is in the husband’s name as exclusive owner. The wife signs a deed without SPA.

The sale may be challenged for lack of authority, unless the husband authorized or ratified it.

Scenario 4: Relative Has SPA to Manage but Not Sell

An owner gives a cousin an SPA to pay taxes and manage rentals. The cousin sells the property.

The sale exceeds authority. Management authority does not include sale unless clearly stated.

Scenario 5: Owner Abroad Issues Proper SPA

The owner in Canada executes a properly acknowledged SPA authorizing her sister in the Philippines to sell a specific property and receive payment.

The sister may validly sign within the limits of the SPA.

Scenario 6: SPA Signed Before Death, Deed Signed After Death

An owner signs an SPA but dies before the attorney-in-fact signs the Deed of Sale.

The authority may have been extinguished by death. The buyer should deal with the estate or heirs, not rely on the old SPA.

XXXIX. Key Legal Principles

Several principles summarize the law:

A relative is not automatically an agent.
Authority to sell real property must generally be in writing.
A general authority to manage does not imply authority to sell.
A co-owner may sell only his or her share, not the entire property, without authority from the others.
A forged SPA or deed conveys no authority.
Notarization does not cure lack of authority.
Possession of title does not equal authority to sell.
A buyer dealing with a non-owner must verify authority.
An unauthorized sale may be ratified by the true owner.
Without ratification, the buyer’s main remedy is often against the unauthorized relative.

XL. Conclusion

In the Philippine setting, property transactions among relatives are common, but familiarity should not replace legal formality. A sale of property by a relative without a Special Power of Attorney is legally risky and often ineffective against the true owner.

The safest rule is this: when the person selling is not the registered owner, demand clear written authority. For real property, that authority should normally be a properly executed SPA specifically authorizing the sale.

Owners should protect themselves by issuing precise authority only when intended. Relatives should avoid acting beyond their legal mandate. Buyers should conduct due diligence before paying. Brokers and notaries should verify authority before participating in the transaction.

A family relationship may explain why someone is involved in a transaction, but it does not prove the legal power to sell. In Philippine property law, ownership, written authority, and proper documentation remain essential.