Your first steps with structural damage
Report it to your landlord in writing right away, take dated photos and videos, and stay away from any part that could collapse or give way — treating anything that looks dangerous as an emergency.
A written report records when the landlord was notified, which matters if the problem is ignored. Photograph the damage — the crack, the sagging area, the rotting balcony — and note how it changes over time. Do not use unsafe stairs, balconies, or areas beneath a sagging ceiling.
If the damage poses an immediate danger and your landlord will not respond, you can also contact your local building or code-enforcement office, which can inspect and order repairs. Keep your reports, photos, and any inspection records. If your landlord ignores structural damage, a free, confidential review can help you decide what to do next.
This is general information about California tenant rights, not legal advice. Every situation is different.