The Family Code of the Philippines (Executive Order No. 209, as amended) establishes the legal framework governing property relations between spouses, with particular emphasis on the requirement of marital consent for transactions involving community or conjugal property. When one spouse abandons the other, special considerations arise regarding the abandoned spouse’s authority to purchase property and the necessity—or lack thereof—of the abandoning spouse’s consent. This article provides a comprehensive examination of the governing provisions, property regimes, rights and limitations of the abandoned spouse, procedural requirements, registration rules, and related legal consequences.

I. Applicable Property Regimes

Philippine law recognizes three primary property regimes, all of which may be modified by a valid marriage settlement executed before the wedding (Family Code, Art. 75).

Absolute Community of Property (ACP) – This is the default regime for all marriages celebrated on or after 4 August 1988 unless otherwise stipulated (Art. 88). Under ACP, all property owned by the spouses at the time of marriage, as well as all property acquired during the marriage (with certain exclusions listed in Art. 92), forms part of the community property owned in common by the spouses.
Conjugal Partnership of Gains (CPG) – This regime governs marriages celebrated before the effectivity of the Family Code or those in which the parties expressly chose it. Only properties acquired during the marriage through onerous title belong to the conjugal partnership (Art. 116), while properties brought into the marriage remain separate.
Complete Separation of Property – This applies only when expressly agreed upon or when judicially decreed.

The rules on marital consent and abandonment apply with greatest force to ACP and CPG because these regimes create a common fund that both spouses administer jointly.

II. General Rule on Marital Consent for Property Transactions

Articles 96 (ACP) and 124 (CPG) of the Family Code mandate that the administration and enjoyment of the community or conjugal property belong to both spouses jointly. Any act of disposition or encumbrance—sale, donation, mortgage, or any alienation that diminishes the common fund—requires the written consent of both spouses. In the absence of such consent, the transaction is void. However, the law treats the transaction as a continuing offer that may be perfected by subsequent ratification of the non-consenting spouse or by court authorization before the offer is withdrawn.

Purchase of property, by contrast, is an act of acquisition, not disposition. A spouse may therefore enter into a contract to buy property without the other spouse joining as a party to the deed. When the purchase is made with community or conjugal funds, the acquired asset automatically becomes part of the common fund (Art. 91 for ACP; Art. 117 for CPG). The seller has no legal obligation to require the signature of the non-purchasing spouse.

III. Abandonment Defined and Its Effect on Property Administration

Abandonment occurs when one spouse leaves the conjugal dwelling without justifiable cause and without any intention of returning. It is a ground for legal separation (Art. 55(9)) and also constitutes a situation in which the abandoning spouse is “otherwise unable to participate in the administration of the common properties” (Arts. 96 and 124, second paragraph).

Upon abandonment, the abandoned spouse may assume sole powers of administration without the necessity of a prior court order. This assumption is automatic once the fact of abandonment is established by clear and convincing evidence (e.g., prolonged absence, cessation of support, and lack of communication). However, the grant of sole administration does not extend to acts of disposition or encumbrance; for those, court authority or the written consent of the other spouse remains indispensable.

IV. Purchase of Property by the Abandoned Spouse

Because the acquisition of property is classified as an act of administration rather than disposition, the abandoned spouse may validly purchase real or personal property without obtaining the written consent of the abandoning spouse. The following rules apply:

Source of Funds. If the purchase price is taken from community or conjugal funds, the property becomes part of the common estate. If paid from the abandoned spouse’s exclusive property (Art. 92 for ACP; Art. 119 for CPG), the asset remains separate property.
No Requirement of Dual Signatures. The deed of absolute sale may be executed solely by the abandoned spouse as buyer. The Register of Deeds cannot lawfully refuse registration solely on the ground that only one spouse signed the purchase deed, provided the transaction is otherwise regular and the funds used are conjugal or the purchaser is acting in the capacity of sole administrator.
Benefit to the Family. Courts uphold purchases made by the abandoned spouse when they serve the family’s needs—such as acquiring a new family home, income-generating property for the children’s support, or assets necessary to preserve the conjugal estate. Purchases that are manifestly disadvantageous or made in bad faith may later be challenged upon dissolution of the property regime.

V. Instances Requiring Court Authorization

Although consent is not required for ordinary purchases, the abandoned spouse may still seek judicial approval in the following situations to eliminate future disputes and facilitate clean title:

The purchase involves a substantial portion of the community or conjugal assets.
The property to be acquired is intended for long-term family use and the abandoning spouse’s whereabouts are unknown.
The Register of Deeds in the relevant jurisdiction insists on a court order before issuing a new title.

The petition is filed before the Regional Trial Court (acting as a Family Court) of the place where the property is situated or where the spouses reside. The petition must allege and prove:

Fact of abandonment;
Assumption of sole administration by the petitioner;
Necessity and benefit of the proposed purchase;
Efforts made to locate the other spouse.

If the other spouse’s whereabouts are unknown, service by publication is allowed. The court order, once issued, serves as sufficient authority for the Register of Deeds to register the deed and issue the title without the signature of the absent spouse.

VI. Registration and Title Requirements

When the abandoned spouse registers the purchased property:

The new certificate of title is ordinarily issued in the name of the purchasing spouse “married to [name of abandoning spouse]” to reflect the conjugal or community character of the asset.
The court order authorizing the purchase, if obtained, must be presented and annotated on the title.
Failure to present either dual consent or a court order may cause the Register of Deeds to annotate a notice of the possible need for future ratification or judicial confirmation.

VII. Effects on the Conjugal or Community Estate

The property purchased by the abandoned spouse forms part of the common fund and is subject to the same rules on reimbursement, charges, and liabilities that apply to all community or conjugal assets (Arts. 94–95 for ACP; Arts. 121–123 for CPG). Upon dissolution of the property regime—whether by death, legal separation, annulment, or declaration of nullity of marriage—the asset is inventoried, liquidated, and divided according to the applicable regime. The abandoning spouse retains his or her share unless forfeited under Art. 63 (legal separation) or Art. 147/148 (void marriages).

VIII. Related Legal Remedies and Proceedings

Abandonment does not automatically dissolve the property regime. Dissolution requires a judicial decree:

Legal separation (Art. 55) – results in separation of property and forfeiture of the guilty spouse’s share in the net profits.
Declaration of nullity or annulment – restores the parties to their original property status.
Summary proceeding for absence (Civil Code, Arts. 381–389) – if the abandoning spouse has been missing for the periods prescribed, a declaration of absence may be obtained, further strengthening the surviving spouse’s administrative powers.

In all these proceedings, the court may issue additional orders concerning administration of the common property, including authority to sell or encumber existing assets or to acquire new ones.

IX. Limitations and Protections

The abandoned spouse’s power to purchase without consent is not absolute. The transaction remains subject to:

The presumption that all property acquired during marriage is conjugal (Art. 116);
The right of the other spouse to challenge the purchase upon reappearance if it can be shown to have been fraudulent or grossly disadvantageous;
Criminal liability for estafa or other offenses if the purchase is used to defraud creditors or the other spouse.

Conversely, the law protects the abandoned spouse by allowing assumption of administration and by requiring the abandoning spouse to prove any claim of nullity or prejudice.

X. Summary of Key Principles

Marital consent is required only for acts of disposition or encumbrance, not for acquisition.
Abandonment empowers the abandoned spouse to assume sole administration.
The abandoned spouse may purchase property without the other spouse’s consent when acting within the scope of administration.
Court authorization is available—and often advisable—for significant transactions or to ensure unassailable title.
The acquired property becomes part of the community or conjugal estate and is subject to eventual liquidation upon dissolution of the property regime.

These rules balance the need to protect the marital partnership with the practical necessity of allowing the abandoned spouse to act decisively for the welfare of the family left behind. They reflect the Family Code’s policy of mutual support and joint responsibility while providing clear remedies when one spouse unilaterally withdraws from that responsibility.