Short answer. Yes. Article 1660 of the Civil Code lets the lessee terminate the lease at once, by notifying the lessor, when a dwelling becomes so dangerous that its use brings imminent and serious danger to life or health. This holds even if you knew of the condition or signed a waiver of the right to rescind.
What the law says
If a dwelling place or any other building intended for human habitation is in such a condition that its use brings imminent and serious danger to life or health, the lessee may terminate the lease at once by notifying the lessor, even if at the time the contract was perfected the former knew of the dangerous condition or waived the right to rescind the lease on account of this condition.
Civil Code, Article 1660 — Dangerous Dwelling. Read the full provision →
The right to leave a dangerous home cannot be signed away
Article 1660 gives a tenant an unusually strong protection. If a home is in such a condition that its use brings imminent and serious danger to life or health, the lessee may terminate the lease at once by notifying the lessor. The striking part is what follows: this holds even if at the time the contract was perfected the former knew of the dangerous condition or waived the right to rescind the lease on account of this condition. A waiver clause in your lease does not defeat it. The law refuses to let anyone contract themselves into staying in a building that endangers their life or health, because human safety is not something a signature can trade away.
The danger must be imminent and serious
The right is not a general exit clause for any complaint. The article speaks of imminent and serious danger to life or health, so the threshold is real peril, not inconvenience or ordinary disrepair. A structure at risk of collapse, exposed wiring creating a fire hazard, contamination that sickens the occupants, or damage after an earthquake or flood that makes the place unsafe to inhabit, these are the kinds of conditions contemplated. Cosmetic defects, a leaking faucet, or a landlord's slow repairs do not qualify. Because you will have to justify the termination if the lessor disputes it, the seriousness and immediacy of the danger are the facts that matter most.
Notify the lessor, and document the hazard
The article requires that you terminate by notifying the lessor. That notice is the act that ends the lease, so it should be given clearly and, ideally, in a form you can later prove, stating that you are terminating because the dwelling has become dangerous to life or health. Before or as you leave, it is wise to record the condition: photographs, dated messages, any inspection or engineering assessment, and reports to the proper authorities. This evidence protects you if the lessor later claims you abandoned the premises without cause and tries to hold you to the remaining term or the deposit.
What it does not automatically settle
Article 1660 answers whether you may leave; it does not by itself resolve every money question that follows. Recovery of your deposit, responsibility for the dangerous condition, and any claim for damages depend on who was at fault and on the other terms of your lease and the law on the lessor's duty to keep the premises fit for use. Terminating stops the obligation to keep paying rent for a home you cannot safely occupy, but a lessor who caused or ignored the hazard may owe more than that. If the deposit or damages are contested, the surrounding facts, not this article alone, decide the outcome.