When you discover that the person who signed the deed of sale was not the actual owner, the first question is usually: “Do I still own what I bought?” In Philippine law, the answer is not always a simple yes or no. A sale may be binding between the buyer and the person who signed, but it may still fail to transfer ownership, fail to bind the true owner, or even be treated as void or unenforceable depending on the facts. The key questions are: Did the signer have authority? Was the true owner’s consent given? Was the property delivered? Was the property conjugal, inherited, mortgaged, or registered land? And was there fraud, forgery, or a fake Special Power of Attorney?

Quick Answer: A Person Cannot Usually Sell What They Do Not Own or Have Authority to Sell

As a general rule, a buyer cannot acquire better ownership than what the seller had. This is the practical meaning of the legal principle often expressed as nemo dat quod non habet — no one can give what they do not have.

The Philippine Supreme Court has repeatedly applied this rule: a person can sell only what he or she owns or is authorized to sell, and a buyer normally receives only the rights that the seller can legally transfer. (Supreme Court of the Philippines)

But Philippine law also recognizes several important distinctions:

Situation	Usual Legal Effect
The signer is the owner	Sale may be valid if all legal requirements are met
The signer is an authorized agent with a valid SPA	Sale may bind the owner
The signer acted in the owner’s name without authority	Contract is generally unenforceable unless the owner ratifies it
The signer sold property in their own name but did not own it	Buyer may have a claim against the signer, but ownership usually does not pass from the true owner
The signature of the owner was forged	The deed is generally ineffective against the true owner
One spouse sold conjugal or community property without the other spouse’s consent	The sale may be void under the Family Code
A co-owner sold only their share	Sale may be valid only as to that co-owner’s share
A buyer registered the deed despite a defective sale	Registration alone does not automatically cure a void or forged sale

The safest way to analyze the problem is not to ask only, “Was there a notarized deed?” The better question is: Did the person who signed have the legal right and authority to transfer ownership?

What Makes a Sale Valid Under Philippine Law?

Under the Civil Code of the Philippines, a contract of sale exists when one party obligates himself or herself to transfer ownership and deliver a determinate thing, while the other party pays a certain price in money or its equivalent. A sale is generally perfected once there is a meeting of minds on the object and the price. (Lawphil)

For ordinary readers, this means a sale has two important stages:

Perfection of the sale — the buyer and seller agree on the property and price.
Transfer of ownership — ownership is transferred through delivery, which may be actual delivery, constructive delivery, or execution of a public instrument such as a notarized deed of sale in proper cases.

The Civil Code also says that the vendor must have the right to transfer ownership at the time the property is delivered. Ownership is acquired by the buyer only upon delivery, not merely because money changed hands or a document was signed. (Lawphil)

This is why a person who is not the actual owner may create serious legal problems. They may be able to sign a piece of paper, receive money, and even have the document notarized, but they may still be unable to transfer ownership if they had no right or authority to do so.

The Most Important Legal Question: Did the Signer Have Authority?

Many disputes happen because the person who signed was not the registered owner but claimed to be an agent, relative, spouse, heir, caretaker, attorney-in-fact, broker, or “representative.”

Philippine law allows an owner to act through an agent. In real estate transactions, this is usually done through a Special Power of Attorney, commonly called an SPA. An SPA is a written authority allowing another person to perform a specific act, such as selling a particular parcel of land, condominium unit, vehicle, or other property.

But authority must be real, specific, and provable.

If the Signer Had a Valid SPA

A sale signed by an authorized attorney-in-fact may be valid if:

The SPA was actually signed by the owner;
The SPA clearly authorizes the sale, not merely “management” or “administration”;
The property is specifically identified;
The authority was still effective at the time of sale;
The deed of sale follows the authority granted;
The owner had capacity and legal right to sell;
For land, the SPA and deed meet notarization and registration requirements.

A common mistake is assuming that a general SPA or a broad “authority to transact” automatically includes authority to sell land. In practice, Registers of Deeds, banks, buyers, and lawyers usually require the SPA to state the power to sell clearly and to identify the property.

If the Signer Had No Authority

The Civil Code provides that no one may contract in the name of another without being authorized by that person or having legal representation by law. A contract entered into in another person’s name without authority is generally unenforceable, unless the true owner ratifies it. (Lawphil)

In plain English:

The unauthorized signer may be liable to the buyer.
The buyer cannot automatically force the true owner to honor the sale.
The true owner may reject the transaction.
The true owner may later ratify the sale, but ratification must be clear.
Without ratification, the buyer’s remedy is often against the person who received the money.

Notarization Does Not Automatically Make a Bad Sale Good

Many people feel reassured when they see a notarized Deed of Absolute Sale. Notarization is important because it converts a private document into a public document and is normally required for registration of real property transfers.

But notarization does not magically create ownership or authority.

A notarized deed may still be challenged if:

The seller was not the owner;
The owner’s signature was forged;
The SPA was fake or expired;
The person who signed exceeded their authority;
One spouse’s consent was required but missing;
The property was already sold to another buyer;
The seller had no legal capacity;
The deed was simulated, fictitious, or fraudulent.

Under the Civil Code, contracts with no real consent, illegal object, fictitious cause, impossible object, or those expressly prohibited by law may be void from the beginning. The action or defense to declare the inexistence of a void contract does not prescribe. (Lawphil)

For registered land, the practical point is simple: a notarized deed is only as strong as the signer’s ownership and authority.

If the Property Is Land or a House and Lot

Real estate is where this issue becomes most serious because the amounts involved are high and title transfer requires several government steps.

For land, condominium units, and other registered real property, buyers usually deal with:

The registered owner shown on the Transfer Certificate of Title or Condominium Certificate of Title;
The Register of Deeds;
The Bureau of Internal Revenue;
The city or municipal assessor;
The city or municipal treasurer;
Sometimes the Department of Agrarian Reform for agricultural land.

The Land Registration Authority explains that transfer-title transactions generally require documents such as the BIR Certificate Authorizing Registration or eCAR, real property tax clearance, proof of payment of transfer tax, and, when applicable, DAR clearance for land covered by agrarian reform rules. (Land Registration Authority)

Why the Title Still Matters

In the Philippines, a Torrens title is strong evidence of ownership, but registration is not itself a mode of acquiring ownership. The Supreme Court has consistently recognized that registration cannot be used as a shield for fraud or to create ownership where the seller had none. (Lawphil)

So if a deed was forged or signed by someone without authority, later registration may still be attacked by the true owner, especially where the buyer was not in good faith.

Good faith is not just saying, “I did not know.” Courts look at what the buyer actually did. A buyer of real property is expected to inspect the title, check the seller’s identity, verify possession, examine encumbrances, and investigate suspicious circumstances.

If the Signer Was a Spouse

A very common Philippine scenario is this: the title is in the name of one spouse, or one spouse signs the deed, but the property is actually part of the marriage’s community or conjugal property.

Under the Family Code of the Philippines, the administration and enjoyment of absolute community property or conjugal partnership property generally belongs to both spouses jointly. One spouse’s sole power of administration does not include the power to dispose of or encumber the property without the written consent of the other spouse or court authority. (Lawphil)

The Supreme Court has applied Article 124 of the Family Code to hold that the alienation or encumbrance of conjugal property without the required spousal consent is void. (Supreme Court of the Philippines)

This means a buyer should be careful when:

The seller is married;
The title says “married to” or “spouses”;
The property was acquired during the marriage;
Only one spouse signs the deed;
The other spouse is abroad, separated, or uncooperative;
The seller says, “Ako na bahala, hindi na kailangan pirma niya.”

In practice, buyers, notaries, banks, and Registers of Deeds often require the spouse’s written consent or signature, depending on the property regime and title history.

If the Signer Was a Co-Owner or Heir

Another common problem involves inherited property.

For example:

One child sells the family home after a parent dies.
A sibling signs a deed claiming to represent all heirs.
A buyer pays one heir who promises to “fix the papers later.”
The title is still in the name of the deceased parent.
There is no extrajudicial settlement of estate yet.

A co-owner or heir generally cannot sell the entire property as if they were the sole owner. They may sell only whatever rights or share they actually have, unless the other co-owners or heirs authorized them.

If one heir sells the whole property without authority from the others, the sale may be valid only as to that heir’s undivided share. It does not automatically bind the other heirs.

For inherited real property, buyers usually need to check:

Death certificate of the deceased owner;
Marriage certificate and family documents;
List of legal heirs;
Extrajudicial Settlement of Estate or court settlement documents;
Estate tax clearance or eCAR;
Authority of the heir who is signing;
Whether all heirs signed or issued valid SPAs;
Whether minors are involved, because court approval may be required for transactions affecting a minor’s property.

A buyer should be especially cautious when someone says, “Lahat naman kami magkakapatid pumayag,” but only one person is willing to sign.

If the Owner’s Signature Was Forged

Forgery is different from a simple lack of authority.

If the owner’s signature was forged, the true owner did not consent at all. The deed is generally ineffective against the owner. A forged deed can also create criminal exposure for falsification, estafa, or related offenses depending on the facts.

Under the Revised Penal Code, deceitful transactions involving false pretenses, fraudulent representation, or falsification of documents may give rise to criminal liability when the legal elements are present. (Lawphil)

For buyers, the difficult part is evidence. A buyer who suspects forgery should preserve:

The original deed and all copies;
IDs used by the seller;
Screenshots of conversations;
Bank deposit slips or proof of payment;
Receipts;
SPA and notarization details;
The notary’s commission details;
Witness names;
CCTV or meeting records, if available;
Certified true copies of title and registration documents.

For true owners, the usual civil remedies may include cancellation of title, reconveyance, quieting of title, annulment of deed, damages, and annotation of notices where legally available.

If the Seller Later Becomes the Owner

There is an important Civil Code rule that sometimes protects buyers.

Article 1434 provides that when a person who is not the owner sells or alienates and delivers a thing, and later acquires title to it, that title passes by operation of law to the buyer or grantee. (Lawphil)

This can matter in situations where:

A seller expected to inherit the property;
A co-owner later acquired the remaining shares;
A person sold before completing title transfer but later became the registered owner.

But this rule is fact-specific. It does not automatically cure fraud, forgery, lack of spousal consent, constitutional restrictions, or illegal arrangements. It also does not erase the rights of third persons who may have acquired rights in good faith.

If the Property Was Sold Twice

Sometimes the issue is not only that the signer was not the owner, but that the same property was sold to two different buyers.

Article 1544 of the Civil Code gives rules on double sales. For immovable property, ownership generally belongs to the buyer who first registered the sale in good faith. If there is no registration, the rule may depend on possession in good faith or the oldest title in good faith. (Lawphil)

The words “in good faith” are critical.

A buyer who rushed to register despite knowing of a prior buyer, an occupant, an adverse claim, or suspicious facts may not be protected.

If the Sale Involves Movable Property, Vehicles, or Goods

For movable property, the Civil Code also follows the general rule that a buyer from a non-owner acquires no better title than the seller had, unless the true owner is precluded by conduct from denying the seller’s authority or a legal exception applies. The Civil Code recognizes exceptions involving certain sales under statutory authority, court order, negotiable documents, and merchant sales under specific conditions. (Lawphil)

For vehicles, practical checks include:

Certificate of Registration;
Official Receipt;
Deed of Sale;
Valid IDs of registered owner;
LTO records;
Chattel mortgage annotations;
Encumbrance status;
HPG clearance in appropriate cases;
Whether the person signing is the registered owner or has a valid SPA.

A common red flag is when the seller says, “Open deed of sale lang,” meaning the prior owner signed a deed but the vehicle was never transferred. This practice is common, but risky. If there is a chain of unregistered deeds, unpaid taxes, encumbrances, or a missing owner, the buyer may have difficulty transferring the vehicle later.

Foreigners, Land, Condominiums, and Nominee Arrangements

Foreigners dealing with Philippine property must be especially careful because Philippine law has constitutional restrictions on land ownership.

The 1987 Constitution generally prohibits the transfer of private lands to persons who are not qualified to acquire or hold lands of the public domain, except in cases such as hereditary succession. It also recognizes that natural-born Filipino citizens who lost Philippine citizenship may acquire private lands subject to legal limits. (Lawphil)

Republic Act No. 9225, the Citizenship Retention and Re-acquisition Act of 2003, allows natural-born Filipinos who became foreign citizens to reacquire Philippine citizenship by taking the required oath, after which they enjoy full civil and political rights subject to existing laws. (Supreme Court E-Library)

For condominium units, foreigners may generally acquire units within the limits allowed by the Condominium Act, including the commonly cited 40% foreign ownership limit in condominium corporations. (Lawphil)

Why “Nominee” Purchases Are Dangerous

Some foreigners are told to put land in the name of a Filipino spouse, partner, friend, employee, or corporation “for convenience.” This can create serious legal risk.

If the Filipino named on the title is the actual registered owner, the foreigner may have difficulty enforcing ownership rights if the arrangement violates constitutional restrictions or public policy. The foreigner may also be exposed to disputes involving trust, fraud, family property, inheritance, or corporate anti-dummy concerns.

A foreign buyer should not assume that a private side agreement will override the Constitution, land registration rules, or family property laws.

What Buyers Should Check Before Paying

Before paying any substantial amount, especially for land or a house and lot, do not rely only on the seller’s story. Verify.

1. Get a Certified True Copy of the Title

Request a recent certified true copy from the Register of Deeds or through authorized Land Registration Authority channels. Check:

Registered owner’s full name;
Title number;
Technical description;
Location;
Lot area;
Encumbrances;
Mortgages;
Adverse claims;
Notices of lis pendens;
Restrictions;
Prior annotations.

2. Match the Seller’s Identity With the Title

Compare the title with:

Government IDs;
Tax Identification Number;
Civil status;
Marriage records;
Address;
Signature;
Spouse’s name;
Authority to sign.

If the title says “Juan Santos married to Maria Santos,” but only Juan is signing, ask why Maria is not signing or giving written consent.

3. Verify the SPA Carefully

If the seller is represented by an attorney-in-fact, check whether the SPA:

Specifically authorizes sale;
Identifies the property;
Names the attorney-in-fact;
Is notarized;
Has proper consular acknowledgment or apostille if executed abroad;
Has not been revoked;
Matches the owner’s identity and signature.

For documents executed abroad, apostille rules may apply if the document comes from a country that is a party to the Apostille Convention. The DFA explains that foreign public documents from contracting states generally no longer need “red ribbon” consular legalization, but must be apostilled by the competent authority of the issuing country. (Philippine Embassy in New Delhi)

4. Check Taxes and Transfer Requirements

For real property transfers, the buyer and seller usually deal with:

Requirement	Office Usually Involved	Practical Note
Capital Gains Tax	BIR	Commonly 6% based on the highest of selling price, zonal value, or assessed/fair market value, depending on the transaction
Documentary Stamp Tax	BIR	Commonly required for deeds of sale and other taxable documents
Certificate Authorizing Registration or eCAR	BIR	Needed before Register of Deeds transfer
Transfer Tax	City or municipal treasurer	Rate and processing vary by locality
Real Property Tax Clearance	City or municipal treasurer	Confirms no unpaid real property tax
Tax Declaration transfer	Assessor’s Office	Usually follows title transfer
New title issuance	Register of Deeds	Requires complete documents and payment of fees

BIR guidance for real property capital gains tax refers to the 6% tax based on the selling price, zonal value, or fair market value per tax declaration, whichever is higher, while documentary stamp tax rules apply to deeds and similar taxable documents. (Bir Cdn)

5. Inspect the Property

Visit the property. Talk to occupants, neighbors, homeowners’ associations, condominium admin, barangay officials, or the building administrator when appropriate.

Warning signs include:

Someone else is occupying the property;
The seller cannot enter the property;
The seller refuses to show original documents;
The price is unusually low;
The owner is abroad but cannot be contacted directly;
The seller pressures you to pay immediately;
The SPA looks generic or vague;
There are handwritten alterations in documents;
The title has recent transfers, adverse claims, or pending litigation.

What to Do If You Already Bought From Someone Who Was Not the Owner

If you already paid or signed documents, act quickly but carefully. Your next steps depend on whether you are the buyer, the true owner, or a person whose signature was forged.

1. Secure All Evidence

Keep copies of:

Deed of sale;
SPA;
Acknowledgment receipts;
Bank transfers;
Checks;
Chat messages;
Emails;
IDs;
Title copies;
Tax declarations;
BIR forms;
Notary details;
Witness information.

Do not surrender original documents without receiving a written acknowledgment.

2. Verify the Title and Transaction History

Request a certified true copy of the title and examine all annotations. If there is already a transfer, mortgage, adverse claim, or notice of lis pendens, the urgency increases.

3. Send a Written Demand

A buyer may send a written demand to the person who received payment, asking for:

Refund;
Completion of valid transfer documents;
Proof of authority;
Explanation of the defect;
Return of documents;
Damages or reimbursement.

A written demand is often useful later to show that the other party was given a clear opportunity to respond.

4. Consider an Adverse Claim or Notice of Lis Pendens

For registered land, a person claiming an interest adverse to the registered owner may be able to file an adverse claim under the Property Registration Decree, subject to the legal requirements. An adverse claim is not a substitute for a court case, but it can warn third persons that someone is asserting an interest in the property. (Supreme Court E-Library)

If a court case is filed involving title, possession, quieting of title, partition, or another proceeding directly affecting registered land, a notice of lis pendens may be available. This is an annotation that warns third persons that the property is involved in litigation. (Supreme Court E-Library)

These remedies must be used carefully. Filing a baseless annotation can create liability.

5. Check Whether Barangay Conciliation Is Required

For disputes between individuals in the same city or municipality, or in adjoining barangays under certain conditions, barangay conciliation may be a required pre-condition before filing a case in court. But there are many exceptions, including disputes involving the government, parties from different cities or municipalities in certain cases, offenses with higher penalties, urgent legal actions, and disputes involving juridical entities. (Lawphil)

If barangay conciliation applies and is skipped, a court case may face dismissal or suspension.

6. Identify the Correct Civil Remedy

Depending on the facts, possible remedies may include:

Problem	Possible Civil Remedy
Buyer paid unauthorized signer	Collection of sum of money, rescission, damages
Forged deed transferred title	Annulment or cancellation of deed, reconveyance, cancellation of title
Cloud on owner’s title	Quieting of title
Double sale	Action to determine ownership and validity of sale
Co-owner sold more than their share	Partition, annulment as to excess share, damages
Spouse sold without consent	Declaration of nullity of sale, cancellation, reconveyance
Seller refuses to complete valid sale	Specific performance, damages, rescission

The proper court depends on the nature of the action, the assessed value of the property when relevant, and the remedy requested. Under Republic Act No. 11576, jurisdiction in certain real property title or possession cases depends partly on whether the assessed value exceeds ₱400,000, but some actions may be treated differently depending on the main issue raised. (Supreme Court E-Library)

7. Consider Criminal Remedies if There Was Fraud or Forgery

A criminal complaint may be considered when there is evidence of:

Forged signature;
Fake SPA;
False identity;
False claim of ownership;
Multiple sales to different buyers;
Use of falsified notarized documents;
Misrepresentation that induced payment.

Criminal and civil cases have different purposes. A criminal case punishes an offense if the elements are proven beyond reasonable doubt. A civil case focuses on ownership, title, refund, damages, cancellation, reconveyance, or enforcement of rights.

Practical Timelines and Bottlenecks

Timelines vary widely by location, completeness of documents, volume of pending work, and whether the transaction is disputed.

Step	Typical Practical Concern
Title verification	Delays happen if title details are incomplete or records need manual checking
BIR eCAR processing	Often delayed by missing TINs, inconsistent values, unpaid taxes, or incomplete notarized documents
Treasurer’s Office transfer tax	Requires correct computation and local documents
Register of Deeds transfer	Documents must match exactly; name discrepancies can cause rejection
Adverse claim or lis pendens	Must comply with technical legal requirements
Court action	Can take months to years, especially if title cancellation, reconveyance, or forgery is contested
Criminal complaint	Requires evidence of deceit, damage, and participation of the accused

In real transactions, the most common bottlenecks are not dramatic legal arguments. They are usually missing IDs, inconsistent names, expired SPAs, unavailable spouses, unpaid estate taxes, no extrajudicial settlement, uncooperative heirs, old mortgages, tax declaration discrepancies, and documents executed abroad without proper authentication.

Common Real-Life Scenarios

“The title is in my mother’s name, but my brother sold the property.”

If the mother is alive and did not authorize the brother, the brother generally cannot bind the mother. If the mother is deceased, the brother may only have rights as one heir and cannot automatically sell the entire property without the participation or authority of the other heirs.

“The seller showed me an SPA from the owner abroad.”

Check whether the SPA specifically authorizes the sale, identifies the property, and was properly notarized, consularized, or apostilled depending on where it was executed. Also try to directly contact the owner through a reliable channel before paying.

“Only the husband signed the deed. The wife is abroad.”

If the property is conjugal or community property, the missing spouse’s consent can be fatal. The Family Code rules on spousal consent are strict, and Supreme Court rulings have treated unauthorized disposition of conjugal property as void in appropriate cases. (Lawphil)

“The deed was notarized, so I thought it was safe.”

Notarization helps prove due execution, but it does not prove that the signer owned the property or had authority to sell. A forged or unauthorized deed can still be challenged.

“I bought a property but the title was never transferred to me.”

You may still have contractual rights, but your risk increases if another buyer, creditor, heir, or claimant appears. For registered land, registration, possession, and good faith can become important, especially in double-sale situations.

“The seller promised to fix the title after I paid.”

This is one of the riskiest arrangements. If the seller cannot produce the required documents before payment, the buyer may end up financing a problem that cannot be fixed without court action, estate settlement, tax payments, or consent of other owners.

Frequently Asked Questions

Is a deed of sale valid if the seller is not the registered owner?

It depends. If the signer is an authorized agent of the registered owner, the sale may be valid. If the signer had no authority, the sale usually does not bind the true owner. The buyer may have a claim against the person who signed and received payment, but ownership may not transfer.

Can a non-owner sell property in the Philippines?

A non-owner may sign a contract, but they generally cannot transfer ownership unless they are authorized by the owner or later acquire title in a way recognized by law. Under the Civil Code, the seller must have the right to transfer ownership at the time of delivery. (Lawphil)

Does notarization make the sale valid?

No. Notarization does not cure lack of ownership, lack of authority, forgery, missing spousal consent, or a void transaction. It only affects the form and evidentiary character of the document.

What if the owner later approves the sale?

If the problem is lack of authority, the true owner may ratify the transaction. Ratification must be clear and should be documented properly. But some defects, such as a void sale prohibited by law or a forged deed treated as legally inexistent, may not be cured by simple ratification.

What if one heir sold inherited land without the other heirs?

The sale may bind only that heir’s share, not the entire property, unless the other heirs authorized the sale or later agreed to it. Buyers should require all heirs to sign or issue valid SPAs after proper estate settlement steps.

Is a sale valid if only one spouse signed?

For conjugal or community property, the sale may be void without the written consent of the other spouse or court authority. The answer depends on when the property was acquired, the spouses’ property regime, and the title history.

Can I recover my money if I bought from the wrong person?

Often, yes, but usually from the person who received the money or committed the misrepresentation. Recovery may require a demand letter, barangay proceedings if applicable, a civil case, or a criminal complaint if fraud is involved.

Can a buyer rely only on the title?

A clean title is important, but it is not always enough. Buyers must also check possession, identity, civil status, authority, annotations, tax records, and suspicious circumstances. Registration does not protect a buyer who was not in good faith.

Can a foreigner buy land through a Filipino nominee?

This is highly risky. The Constitution restricts foreign ownership of Philippine land, with limited exceptions. Putting land in a Filipino nominee’s name can create serious enforceability, fraud, inheritance, and constitutional issues. (Lawphil)

What if the seller was not owner when they sold, but later became owner?

Article 1434 of the Civil Code may allow title to pass to the buyer by operation of law if the seller later acquires ownership after selling and delivering the property. But this rule is fact-specific and may not apply where there is fraud, forgery, illegality, or rights of third persons. (Lawphil)

Key Takeaways

A sale signed by someone who is not the actual owner is not automatically valid against the true owner.
The most important issue is whether the signer had ownership, authority, or legal capacity to sell.
A valid SPA can allow an agent to sell, but the SPA must be specific, genuine, and properly executed.
Notarization does not cure forgery, lack of authority, missing spousal consent, or a void transaction.
For conjugal or community property, one spouse usually cannot sell without the other spouse’s written consent or court authority.
A co-owner or heir usually cannot sell more than their own share without authority from the others.
Registration of a defective deed does not automatically create valid ownership.
Buyers should verify the title, seller identity, civil status, authority, tax status, possession, and annotations before paying.
If payment was already made, preserve evidence, verify the title, consider written demand, and determine whether civil, criminal, barangay, or registration remedies apply.
In Philippine property transactions, the safest rule is simple: do not pay in full until the seller’s ownership and authority are proven by documents that can actually support transfer.