Text of the provision

Art. 470. Whenever the owner of the accessory thing has made the incorporation in bad faith, he shall lose the thing incorporated and shall have the obligation to indemnify the owner of the principal thing for the damages he may have suffered. If the one who has acted in bad faith is the owner of the principal thing, the owner of the accessory thing shall have a right to choose between the former paying him its value or that the thing belonging to him be separated, even though for this purpose it be necessary to destroy the principal thing; and in both cases, furthermore, there shall be indemnity for damages. If either one of the owners has made the incorporation with the knowledge and without the objection of the other, their respective rights shall be determined as though both acted in good faith.

(379a)

Civil Code of the Philippines, Republic Act No. 386, approved June 18, 1949, effective August 30, 1950. Reproduced in full; verified verbatim against the LawPhil and ChanRobles official-text renderings.

What this article means

If the owner of the accessory acted in bad faith, they lose it and pay damages. If the owner of the principal acted in bad faith, the accessory's owner may choose payment of value or separation (even if it destroys the principal), plus damages. Incorporation done with the other's knowledge and without objection is treated as good faith on both sides.

Related provisions

Cases interpreting this article

Note. The text of the provision above is reproduced in full from the official enactment (Republic Act No. 386), verified against the LawPhil and ChanRobles renderings. The annotation and commentary around it are the work of Vivas & Nobles Law Office and are general legal information, not legal advice. How a provision applies to a particular situation depends on facts that only a lawyer reviewing your case can assess.