Waiver clauses usually don’t hold up
No. Under California law, a tenant generally cannot waive the right to a habitable home, and lease clauses that try to force that waiver are usually not enforceable. The implied warranty of habitability is built into every residential tenancy, and courts have refused to let landlords contract around it.
A lease might say you accept the unit "as is," or that you agree to handle all repairs yourself. Language like that usually cannot erase the landlord's core duty to keep the home safe and livable. There are narrow exceptions in limited situations, but a landlord cannot simply write away their basic responsibilities for essential conditions like heat, water, and safety.
So if your landlord points to a clause in the lease as a reason to avoid fixing a serious problem, that clause may not hold up. Do not assume you have signed your rights away. If a landlord is relying on lease language to avoid serious repairs, we can help you understand what the law actually requires.
This is general information about California tenant rights, not legal advice. Every situation is different.