In Philippine law, co-ownership exists whenever the ownership of an undivided thing or right belongs to different persons. Governed primarily by the Civil Code of the Philippines (Articles 484 to 501), co-ownership presents a unique legal scenario where multiple individuals hold title to a single property, but their specific physical portions are not yet determined or "metes and bounds" identified.
When it comes to the sale of such property, the law balances the individual right of a co-owner to dispose of their share against the collective interest of the other co-owners.
1. The Right to Sell an Undivided Share
Under Article 493 of the Civil Code, every co-owner has full ownership of their part and of the fruits and benefits pertaining thereto. Consequently, a co-owner may alienate, assign, or mortgage their ideal share.
- The "Ideal Share": A co-owner does not own a specific room or a specific corner of a land. They own an abstract percentage (e.g., 1/3 of the whole).
- Validity of Sale: A co-owner can validly sell their undivided interest to a third party without needing the consent of the other co-owners.
- Effect of the Sale: The buyer becomes a new co-owner. The sale is limited strictly to the portion that may be allotted to the seller-co-owner upon the termination of the co-ownership (partition).
Important Note: If a co-owner purports to sell the entire property without the consent of the others, the sale is not totally void; it is valid only as to the seller's spiritual/pro-indiviso share, but ineffective as to the shares of the non-consenting co-owners.
2. The Right of Legal Redemption
To prevent the entry of strangers into a co-ownership, the law grants the remaining co-owners the Right of Legal Redemption under Article 1620.
- Definition: If a co-owner sells their share to a third person (someone who is not a co-owner), the other co-owners may "redeem" that share by reimbursing the buyer the price of the sale.
- Multiple Redeemers: If two or more co-owners want to exercise this right, they may only do so in proportion to the share they may respectively have in the thing owned in common.
- The Period to Redeem: Under Article 1623, the right of legal pre-emption or redemption must be exercised within thirty (30) days from the notice in writing by the prospective vendor, or by the vendor, as the case may be.
3. The Requirement of Written Notice
The 30-day period for redemption does not begin to run unless the co-owner is notified in writing of the sale.
- Strict Interpretation: The Supreme Court has historically been strict about the "written notice" requirement. Even if a co-owner has actual knowledge of the sale (e.g., they saw the buyer move in), the 30-day period generally does not start until the formal written notice is provided by the seller.
- Purpose: This ensures there is no uncertainty as to when the right to redeem expires.
4. Right to Demand Partition
No co-owner is obliged to remain in the co-ownership. Under Article 494, any co-owner may demand at any time the partition of the thing owned in common, insofar as their share is concerned.
- Effect on Sale: If the property is essentially indivisible (like a single car or a small house) and the co-owners cannot agree to whom it shall be allotted, it may be sold and its proceeds distributed.
- Exceptions to Partition:
- If there is an agreement to keep the thing undivided for a certain period (not exceeding 10 years).
- If the donor or testator prohibited partition (not exceeding 20 years).
- If partition is prohibited by law.
- If the partition would render the thing unserviceable for the use for which it is intended.
5. Consent and Administration
While a co-owner can sell their share, they cannot sell the entire physical property or perform acts of alteration without the consent of the others.
| Action | Requirement |
|---|---|
| Sale of individual share | No consent required. |
| Administration/Better enjoyment | Majority of the interests. |
| Alterations (Physical or Legal) | Unanimous consent. |
| Sale of the whole property | Unanimous consent. |
Summary Table: Rights at a Glance
| Right | Description |
|---|---|
| Alienation | You can sell your "ideal" percentage anytime to anyone. |
| Redemption | If a co-owner sells to a stranger, you can "buy it back" within 30 days of written notice. |
| Partition | You can demand that the property be physically divided or sold to end the co-ownership. |
| Pre-emption | The right to be offered the share before it is sold to a third party (often linked to redemption). |