Quick answer

Under Philippine law, an heir generally does not need the consent of the other heirs to sell his or her own undivided hereditary share. But that heir ordinarily cannot sell the shares belonging to the other heirs or unilaterally make a particular physical portion of an unpartitioned property exclusively his or hers.

Before partition, property inherited by several heirs is generally owned by them in common, subject to the debts of the estate. Article 493 of the Civil Code allows a co-owner to sell or otherwise dispose of his or her own share, but the transfer is limited to whatever portion may ultimately be allotted to that co-owner when the co-ownership is terminated. (eLibrary)

This means that if one heir purported to sell the entire inherited property without authority from the others, the usual rule is not that the sale automatically disappears in its entirety. The sale can remain effective to the extent of the selling heir's own undivided interest, while being ineffective against the shares of the non-consenting heirs. The buyer generally steps into the seller's position as a co-owner and acquires no greater right than the seller possessed. (eLibrary)

Depending on the documents and what happened after the sale, the other heirs may have remedies including legal redemption, partition, declaration of nullity or ineffectiveness as to their shares, cancellation or correction of titles obtained through forged or fraudulent documents, accounting, injunction, and annotation of a notice of lis pendens.

Why inherited property is usually co-owned before partition

Successional rights are transmitted from the moment of the decedent's death. Where there are two or more heirs, Article 1078 of the Civil Code provides that the decedent's estate, before partition, is owned in common by the heirs, subject to payment of the deceased's debts. (eLibrary)

The important consequence is that an heir's interest before partition is ordinarily an ideal or undivided share, not ownership of a particular bedroom, house, strip of land, front portion, back portion, or other physically identified part of the property.

For example, if three heirs inherit one parcel of land, one heir cannot ordinarily declare on his own that "the front 300 square meters is mine" and then bind the other heirs by selling that particular area. A deed describing a definite portion may still produce legal effects to the extent of the seller's undivided interest, but the buyer's rights remain subject to the eventual partition. The buyer cannot obtain more than what may properly be allotted to the seller. (eLibrary)

What an heir can legally sell

An heir may generally sell his or her own hereditary or pro-indiviso interest even before the property has been physically divided. The consent of every co-heir is not a prerequisite to a valid transfer of that heir's own share. Article 493 expressly recognizes a co-owner's power to alienate, assign, or mortgage his or her interest. (eLibrary)

The buyer, however, normally acquires only the seller's position in the co-ownership. If the seller ultimately proves entitled to one-fourth of the property, the buyer cannot ordinarily obtain the other three-fourths merely because the deed described the entire parcel.

The Supreme Court has repeatedly held that even where a co-owner purported to sell the whole property, the transaction affects the seller's share but does not prejudice the shares of co-owners who did not consent. (eLibrary)

The result is different if the inheritance had already been validly partitioned and the particular property was exclusively adjudicated to the selling heir. Once a legal partition gives an heir exclusive ownership of a particular property, that heir generally may dispose of it without obtaining the former co-heirs' consent.

Practical remedies for the non-consenting heirs

The correct remedy depends heavily on whether the seller merely transferred his own share, purported to sell everyone else's shares, used forged documents, executed an improper extrajudicial settlement, or already succeeded in transferring the title.

A sensible response normally proceeds as follows:

Obtain the complete documents immediately. Secure a certified true copy of the current title and relevant annotations from the Register of Deeds, the deed of sale, extrajudicial settlement or affidavit of self-adjudication, previous titles, tax declarations, subdivision plans, and any special power of attorney allegedly authorizing the transaction.
Determine the actual hereditary shares. Establish who the lawful heirs are, whether there is a will, whether the property was conjugal or exclusive property of the decedent, whether another spouse or generation of heirs is involved, and whether estate debts remain unpaid. The seller's maximum transferable interest cannot be determined accurately without first establishing the estate and the heirs.
State the objection in writing. If the deed purports to transfer the other heirs' interests, the non-consenting heirs should promptly document that they did not consent, authorize, ratify, or sign the conveyance. Written objections are especially important when another transfer, mortgage, subdivision, construction, or possession by the buyer is threatened.
Evaluate legal redemption immediately. Where an undivided share or hereditary right was sold to an outsider, the other heirs or co-owners may have a statutory right to take the buyer's place by reimbursing the legally required redemption amount. The deadline can be extremely short.
Consider partition. Where the buyer validly acquired only the selling heir's undivided share, partition is commonly the appropriate remedy. Rule 69 permits a person entitled to partition to ask the court to determine the parties' interests and divide the property. The Supreme Court has specifically held that where one co-owner sold the whole property but could legally transfer only his share, the proper remedy is ordinarily partition rather than nullification of the entire sale. (eLibrary)
Attack fraudulent or forged instruments where appropriate. If signatures were forged, an heir falsely represented himself as sole heir, or documents were fabricated to make it appear that other heirs consented, the case is materially different. Appropriate relief may include declaration of nullity, reconveyance, cancellation of certificates of title, or related remedies, depending on the chain of transactions and the rights of later purchasers.

Legal redemption can be the fastest remedy—but the deadline is short

Two Civil Code provisions commonly arise.

Article 1088 applies when an heir sells his or her hereditary rights to a stranger before partition. The other co-heirs may be subrogated to the purchaser's rights by reimbursing the price, provided the right is exercised within one month from the required written notice of the sale. (eLibrary)

Articles 1620 and 1623 govern legal redemption among co-owners when a co-owner's share is sold to a third person. Article 1623 establishes a 30-day period associated with written notice of the sale. (eLibrary)

The Supreme Court has distinguished the provisions this way: where what is sold is the hereditary right itself in an abstract sense, Article 1088 applies; where the sale concerns an interest in a particular property belonging to the inheritance, Article 1620 may govern. (eLibrary)

The general rule remains that the written notice contemplated by the Civil Code is important and ordinarily mandatory to start the redemption period. A copy of the deed containing the relevant particulars can satisfy the written-notice requirement in appropriate circumstances. (Lawphil)

However, an heir should never assume that the absence of a formal written notice means there is unlimited time to act. In Azurin v. Chua, decided on April 23, 2025, the Supreme Court reaffirmed the general importance of written notice but also applied the equitable exception recognized in earlier jurisprudence where peculiar circumstances gave the redemptioners sufficient knowledge of the sale and its particulars and their prolonged inaction amounted to laches. (Lawphil)

Accordingly, anyone who learns that a co-heir has sold an inherited interest should obtain the deed and seek legal advice immediately rather than wait for a formal notice.

A demand letter alone may not safely exercise legal redemption

A mere statement that "I want to redeem the property" can be inadequate. Supreme Court decisions emphasize the importance of a genuine tender of the full redemption amount; another recognized method is filing the appropriate action together with consignation of the redemption price within the applicable period. (eLibrary)

Because the amount, timing, notice received, identity of the purchaser, and precise nature of the interest sold can alter the analysis, legal redemption is one situation where immediate document review is particularly important.

Partition is often the core remedy when the sale is valid only as to the seller's share

Article 494 provides that no co-owner is ordinarily required to remain indefinitely in a co-ownership, and each co-owner may demand partition of the commonly owned property. So long as the co-ownership continues to be recognized, the Civil Code also provides that prescription does not run in favor of one co-owner or co-heir against the others. (eLibrary)

Under Rule 69, the complaint for partition must state the nature and extent of the plaintiff's title, adequately describe the property, and include the other persons interested in the property. If the right to partition is established, the court may order partition; if the parties cannot agree on the physical division, commissioners may be appointed. (eLibrary)

If the property is essentially indivisible and the co-owners cannot agree that it be assigned to one owner who will compensate the others, Article 498 allows the property to be sold and the proceeds distributed. (eLibrary)

Partition can also involve accounting issues. Article 500 provides for mutual accounting for benefits received and reimbursement of expenses upon partition, which may become relevant where one heir or a buyer has been receiving rent, income, or other benefits from the common property. (eLibrary)

For real actions involving title to or an interest in real property, present court jurisdiction is determined in part by assessed value. Under Republic Act No. 11576, first-level courts have jurisdiction where the assessed value does not exceed ₱400,000, while the Regional Trial Court has jurisdiction where it exceeds ₱400,000, subject to the statutory rules and the nature of the particular action. (eLibrary)

When nullification or cancellation may be appropriate

It is important not to automatically file a case seeking to declare the entire sale void merely because one heir did not obtain everybody else's permission. If the selling heir actually owned an undivided share, Supreme Court jurisprudence generally recognizes the sale to that extent. A prayer that ignores this rule can misidentify the real dispute.

Nullity and cancellation become much more important where the instrument itself is legally defective—for example, where another heir's signature was forged or the document falsely represented that a person had executed the sale.

The Supreme Court has repeatedly held that a forged deed is null and ordinarily conveys no title, and registration does not by itself cure a forged or void conveyance. (eLibrary)

The precise relief nevertheless depends on the entire chain of title. Problems become more difficult where property has subsequently passed to another purchaser claiming to be an innocent purchaser for value. Philippine Torrens-title jurisprudence contains important protections and exceptions involving later purchasers, so a case should not be evaluated solely by looking at the original fraudulent deed. (eLibrary)

What if one heir executed an extrajudicial settlement without the others?

Rule 74 permits an extrajudicial settlement by the heirs when its requirements are satisfied, including the absence of a will and debts and the participation or proper representation of the heirs. If the heirs disagree, the Rule itself recognizes an ordinary action for partition as an available course. (eLibrary)

The Rule expressly states that an extrajudicial settlement is not binding upon a person who did not participate in it or had no notice thereof. The Supreme Court has likewise held in cases involving excluded heirs that an extrajudicial partition cannot simply extinguish the rights of heirs who were improperly left out. (eLibrary)

For registered land, Presidential Decree No. 1529 also regulates registration of extrajudicial settlements. Section 86 requires publication once a week for three consecutive weeks before a deed of extrajudicial settlement or affidavit of adjudication may be registered and provides for the annotation of the Rule 74 two-year lien. (eLibrary)

An heir who discovers that another person falsely executed an Affidavit of Self-Adjudication as "sole heir" despite the existence of other heirs should therefore obtain the affidavit, publication records, transfer documents, and complete title history without delay.

Protecting the property while a case is pending

Where litigation directly affects title to or possession of registered real property, a notice of lis pendens can be an important protective device. Under Rule 13, Section 14, a party in an action affecting title or possession may record notice of the pending action with the Registry of Deeds. From registration of the notice, later purchasers or encumbrancers are placed on constructive notice of the litigation. (eLibrary)

Before suit is filed, an adverse claim under Section 70 of Presidential Decree No. 1529 may sometimes be available where a person claims an interest in registered land adverse to the registered owner and no other registration mechanism applies. Whether an adverse claim is proper depends on the nature of the asserted right and the existing annotations, so it should not be filed mechanically. (eLibrary)

Where another sale, mortgage, demolition, construction, subdivision, or dispossession is imminent, counsel should also determine whether provisional injunctive relief is legally available. These remedies are fact-sensitive and normally require prompt court action.

Evidence to preserve

Preserve the decedent's death certificate; birth and marriage records establishing the heirs; the will, if any; the original or certified copies of titles; previous titles; tax declarations; deeds of sale; extrajudicial settlements; affidavits of self-adjudication; special powers of attorney; notarization details; subdivision and survey plans; estate-tax and registration papers; correspondence with the selling heir and buyer; proof showing when and how each heir learned of the sale; proof of possession and improvements; rental records; photographs; receipts; and any documents bearing signatures that can be compared with an allegedly forged signature.

For a possible legal-redemption claim, preserve especially the written notice, envelope or proof of receipt, copy of the deed, purchase price, payment terms, and exact date on which the sale and its particulars became known.

Common mistakes

A frequent mistake is assuming that the other heirs' lack of consent makes the whole transaction automatically void. The selling heir may have had a valid transferable undivided interest even though he had no power to dispose of the other heirs' shares.

Another mistake is waiting for years because "we were never formally notified." Written notice remains important, but the Supreme Court has recognized exceptional situations in which extensive actual knowledge coupled with prolonged inaction and laches can defeat a later redemption claim. (Lawphil)

Do not rely merely on an oral protest or informal family discussion where a redemption deadline may be running. Likewise, do not sign a quitclaim, confirmation, waiver, extrajudicial settlement, partition agreement, or receipt without understanding whether it ratifies the disputed transaction.

Self-help is also risky. A non-consenting heir should not simply evict the buyer, destroy improvements, retake possession by force, or dispose of the property to somebody else. The buyer may already be a legitimate co-owner to the extent of the seller's valid share.

When legal help is urgent

Prompt legal action is especially important if a written notice of sale or copy of the deed has just been received; the buyer is attempting to register another transfer or mortgage; an extrajudicial settlement or affidavit of self-adjudication excluded an heir; a signature appears forged; the title has already been cancelled and replaced; the property is about to be subdivided, developed, demolished, or sold again; a bank has accepted or is considering a mortgage; the buyer is claiming exclusive ownership and denying the co-heirs' rights; or the family intends to exercise legal redemption.

In these situations, delay can affect remedies even where the underlying inheritance rights are strong.

Frequently asked questions

Can one heir sell inherited land without the signatures of the other heirs?

Yes, to the extent of that heir's own undivided hereditary interest, subject to the estate and eventual partition. The heir generally cannot transfer the shares of the other heirs without authority from them. (eLibrary)

If the deed says the heir sold the entire property, is the deed automatically void?

Not necessarily. The established rule is that the transaction may remain valid to the extent of the seller's own share, while not affecting the interests of non-consenting co-owners. (eLibrary)

Can the buyer choose the exact physical portion he bought?

Not merely because the deed describes it. Before partition, the seller ordinarily owns an ideal share rather than exclusive title to a particular physical portion. The buyer's ultimate entitlement remains subject to the results of partition. (eLibrary)

Can the other heirs buy back the share sold to an outsider?

Potentially. Article 1088 or Articles 1620 and 1623 may provide legal redemption depending on what exactly was sold and the status of the co-ownership. Because the statutory period can be only about 30 days after the legally relevant notice, the documents should be reviewed immediately. (eLibrary)

What if the selling heir forged the signatures of the others?

That presents a different issue from a lawful sale of the seller's own share. A forged deed is generally null and conveys no title through the forged transfer, although later transfers and claims of innocent purchasers can complicate the ultimate remedy. (eLibrary)

What if an heir falsely claimed to be the only heir?

An affidavit of self-adjudication is intended for a genuine sole heir. An excluded heir may challenge an improper settlement or transfer, and Rule 74 expressly limits the binding effect of an extrajudicial settlement on persons who did not participate or had no notice. (eLibrary)

Does an action for partition expire?

Article 494 states that no prescription runs in favor of a co-owner or co-heir against the others while the co-ownership is expressly or impliedly recognized. But this should not be treated as permission to delay indefinitely: repudiation of the co-ownership, later transfers, registration issues, legal-redemption deadlines, laches, and other circumstances can materially change the case. (eLibrary)

Official sources

The principal authorities include the Civil Code of the Philippines, Republic Act No. 386, Supreme Court E-Library; Rule 74 on summary settlement of estates, Supreme Court E-Library; Presidential Decree No. 1529, Property Registration Decree; Republic Act No. 11576 on current civil-court jurisdictional amounts; the Supreme Court's decisions explaining the effect of an unauthorized sale by one co-owner in Heirs of Leopoldo Esteban, Sr. v. Llaguno and Ulay v. Bustamante; and the Court's treatment of the legal-redemption notice requirement in Rama v. Spouses Nogra and the more recent Azurin v. Chua, G.R. No. 259662, April 23, 2025.

General-information disclaimer

This article provides general Philippine legal information and is not a substitute for legal advice on a particular estate, sale, title, or pending dispute. The correct remedy depends on the identities and shares of the heirs, the estate's debts, the wording and authenticity of the deeds, whether a valid partition has occurred, the registration history, possession of the property, notice of the sale, and whether subsequent purchasers or mortgagees have acquired interests.

Law and official-source check: August 26, 2026.