My San Diego rental leaks in the rain. What does my landlord have to fix, and what does my insurance cover?

A strong El Niño winter will find every weak roof, window and door in town. If you rent, two things matter most: your landlord's legal duty to keep the unit weatherproof, and which insurance pays for your stuff. Here is what the official sources say.

What your landlord has to fix

California Civil Code 1941.1 lists the basics a rental must have. Item (1) is "effective waterproofing and weather protection of roof and exterior walls, including unbroken windows and doors." The Department of Real Estate's 2026 tenant guide says landlords "ultimately are legally responsible" for keeping units habitable. The guide also says you should tell your landlord if you know of water getting in or suspect mold. Since Jan 1, 2016, visible mold that a health or code officer finds is more than superficial may count as a substandard condition.

Civil Code 1942 allows written or oral notice, but the DRE guide says to notify the landlord in writing and keep a copy. For an urgent leak, call or tell them in person, then follow up in writing right away. A typed or handwritten letter works. If you text or email, follow it with a letter that describes the damage and the repair you need. The guide suggests certified mail with return receipt; it's not required, but keep proof of delivery.

Who inspects if repairs don't happen

The City's Code Enforcement page says it doesn't take anonymous complaints but keeps your information confidential, and asks whether you've contacted the responsible party first. The DRE guide says an inspector must inspect and give the landlord written notice of needed repairs. If you later sue, the guide says the conditions must still exist 35 days after the inspector mailed that notice, and an inspector's report is helpful evidence for other remedies too. The guide also says the law presumes an eviction is retaliatory if it comes within six months after you use certain tenant rights (Civil Code 1942.5).

Does rent go down if the unit is unlivable?

There is no automatic discount. The DRE guide describes three remedies for serious health-and-safety defects. Repair and deduct: up to one month's rent, no more than twice in 12 months, after a reasonable time (30 days is presumed reasonable). Rent withholding: the guide says "the law does not provide a clear test"; its example is withholding 25% if one of four rooms is unlivable, and it notes judges rarely excuse all rent. Abandonment: moving out, after which you aren't responsible for more rent, though the landlord may sue. Each can lead to a 3-day notice or eviction case, so get advice first.