Short answer. Under Article 707 of the Civil Code, a person who abates a nuisance without a court order is liable for damages if they cause unnecessary injury in the process, or if the alleged nuisance is later found by a court not to be a real nuisance at all.
What the law says
A private person or a public official extrajudicially abating a nuisance shall be liable for damages: (1) If he causes unnecessary injury; or (2) If an alleged nuisance is later declared by the courts to be not a real nuisance.
Civil Code, Article 707 — Liability for Abating a Nuisance Yourself. Read the full provision →
Extrajudicial abatement and its risks
The Civil Code permits private individuals and public officials to abate nuisances without going to court — a process called extrajudicial abatement. This allows a person to remove a nuisance directly and immediately when waiting for a court process is impractical. But extrajudicial abatement comes with risk. Article 707 makes the person who carried out the abatement liable for damages in two distinct situations: causing unnecessary injury during the removal, or acting on something that turns out not to be a nuisance at all. The right to self-help does not shield the actor from consequences when it is exercised excessively or misguidedly.
First ground: unnecessary injury during abatement
Abating a nuisance may require some degree of destruction or interference — tearing down an illegal structure, removing an obstruction, cutting back overhanging branches. What Article 707 prohibits is going further than necessary. If the abatement is carried out in a way that destroys property, harms persons, or causes losses that a more measured response would have avoided, the actor becomes liable for damages for that excess. The standard is proportionality: the harm caused by the abatement must not exceed what was reasonably required to remove the nuisance. Unnecessary injury, even during a lawful abatement, does not go uncompensated.
Second ground: the court later finds it was not a nuisance
The second ground for liability is more fundamental. If the person who carried out the abatement was wrong about the nuisance — if a court later determines that the thing removed or suppressed was not a real nuisance — then the actor is liable for the damages caused by the abatement. This rule allocates the risk of mistake to the person who chose to act without a court order. Seeking judicial confirmation before acting eliminates this risk; acting unilaterally does not. A public official faces the same liability under this ground as a private individual.
Why this matters before acting
Anyone considering self-help removal of a nuisance should weigh both grounds under Article 707. Even if the thing being removed is genuinely a nuisance, the method of removal must be proportionate and must not cause damage beyond what is necessary. And if there is any genuine doubt about whether the condition truly qualifies as a nuisance under the law, court action is the safer path. A judicial declaration of nuisance before abatement provides a complete defense against the second ground. Extrajudicial abatement can be efficient, but it transfers legal risk to the actor in ways that a court order would not.