Short answer. No. A caretaker, tenant or anyone holding property for someone else possesses it as a mere holder, not as owner. What that person does about the possession does not bind or prejudice the owner, unless the owner gave express authority beforehand or ratified the act afterwards.
What the law says
Acts relating to possession, executed or agreed to by one who possesses a thing belonging to another as a mere holder to enjoy or keep it, in any character, do not bind or prejudice the owner, unless he gave said holder express authority to do such acts, or ratifies them subsequently.
Civil Code, Article 558 — Acts Of A Mere Holder. Read the full provision →
Two ways of holding the same property
Philippine law separates possession in the concept of owner from possession in the concept of holder. A caretaker, a tenant, a lessee, a depositary, a borrower and a relative allowed to stay rent-free all fall in the second group. They are physically on the property, sometimes for decades, but they hold it recognising that ownership belongs to another. Article 558 of the Civil Code addresses what follows: acts relating to possession, executed or agreed to by one who possesses a thing belonging to another as a mere holder to enjoy or keep it, in any character, do not bind or prejudice the owner, unless he gave said holder express authority to do such acts, or ratifies them subsequently.
Why this matters to an owner who lives far away
The rule protects owners who are abroad, elderly or simply not on the land. If your caretaker lets a third person occupy a portion, agrees to move a fence, tolerates a neighbour's encroachment, signs a compromise over a boundary, or accepts something in your name, that arrangement does not automatically become yours. He was not possessing for himself, so he had nothing of yours to give away. Two things can change that. Express authority given before the act, which means real authority to do that specific thing and not merely permission to watch the property. Or ratification afterwards, where you learn of the act and adopt it.
Ratification is the trap
Owners lose ground here more often through their own conduct than through anything the holder did. Accepting money that came from an unauthorised arrangement, corresponding with the third party as if the deal were yours, or standing by for years with full knowledge can all be argued as adoption of the act. The safe course is to react in writing as soon as you learn of it: state that the holder had no authority, that you do not adopt what was done, and demand that the third person leave or that the situation be restored. Keep proof the letter was received. Silence is the one response that helps the other side.
What the rule does not decide
Article 558 answers whether the holder's acts bind you. It does not by itself eject anyone, settle a boundary, or resolve whether the occupant has since begun claiming as owner in his own name — a change of character that raises separate questions and its own time limits. It does not cover a person who genuinely holds a real right over the property, such as a usufructuary, whose powers come from that right. And it will not rescue an owner who actually signed or clearly authorised the transaction. If someone is on your land under an arrangement you never made, gather the title, the caretaker's instructions and the dates, and consult a lawyer promptly.