Short answer. It is lost to the landowner without any right to indemnity. A person who builds knowing the land is not his does not get paid for the structure, cannot demand its value, and cannot use the house as leverage to stay on the property while the matter is argued.
What the law says
He who builds, plants or sows in bad faith on the land of another, loses what is built, planted or sown without right to indemnity.
Civil Code, Article 449 — Builder in Bad Faith Loses Everything. Read the full provision →
The rule and how severe it is
One sentence carries it: he who builds, plants or sows in bad faith on the land of another, loses what is built, planted or sown without right to indemnity. The loss is by accession — the structure becomes the landowner's because it is attached to his land — and the closing words remove the compensation that would otherwise soften it. The builder does not recover his construction cost, the value the house adds, or anything for the labour. It is one of the harshest allocations in the Code, and it is deliberately so.
What bad faith means here
Bad faith is knowledge, not malice. It is enough that the builder knew of the flaw in his right to build — that the land belonged to someone else, that his claim to it was disputed, or that the permission he relied on came from a person who could not give it. He need not have intended to cheat anybody. This is why so many builders are surprised by the outcome: they built openly, sometimes with a written agreement of a sort, and assumed that being visible and sincere was the same as being in good faith. It is not.
Not every builder on another's land is in bad faith
The severity of the rule makes the classification the whole case. Someone who built believing on reasonable grounds that the land was his — an inherited parcel he thought had been partitioned to him, a lot he bought under a deed nobody questioned, boundaries he understood the survey to place elsewhere — is not in the position this article describes, and the Code treats him under a very different regime with reimbursement and options. Where the facts are genuinely mixed, that is the argument worth having, because everything else follows from it.
The one thing a bad-faith builder keeps
Even here the loss is not quite total. The Code allows the builder in bad faith reimbursement for the necessary expenses of preserving the land itself — money spent keeping the land from deteriorating, as distinct from money spent improving it. It is a narrow allowance and it does not touch the cost of the structure. If you are on either side of one of these disputes, the documents that matter are the ones showing what was known and when: the title, the survey, any permission relied on, and the correspondence in the period before the first block was laid.
Cases citing this provision
These Supreme Court decisions cite the provision above. We list them so you can read them yourself; the summaries of what each decided are not ours to give.
- Spouses Crispin Aquino and Teresa V. Aquino, herein represented by their Attorney-in-fact, Amador D. Ledesma vs. Spouses Eusebio Aguilar and Josefina V. Aguilar, G.R. No. 182754, June 29, 2015 — read the decision on LawPhil →
- Bank of the Philippine Islands vs. Vicente Victor C. Sanchez, et al./Generoso Tulagan, et al. vs. Vicente Victor C. Sanchez, et al./Reynaldo V. Maniwang vs. Vicente C. Sanchez and Felisa Garcia Yap, G.R. No. 179518 / G.R. No. 179835 / G.R. No. 179954, November 19, 2014 — read the decision on LawPhil →
- National Houseing Authority vs. Corazon B. Baello, et al, G.R. No. 200858, August 7, 2013 — read the decision on LawPhil →
- Municipality of Sta. Maria, Bulacan, Mayor Bartolome Ramos and Members of the Sangguniang Bayan of Sta. Maria, Bulacan vs. Carlos A. Buenaventura, G.R. No. 191278, March 29, 2023 — read the decision on LawPhil →