I live in California and have a tenant that just moved out. I found out they broke the no-pet clause upon move out. Can I withhold some of their security deposit?
Only if you can provide receipts or invoices for expenses actually incurred due to the pet having been there. No pets clauses allow you to prevent pets from being brought onto the premises, demand their removal, and evict if they are not removed. They have no relevance after the tenant and pet vacate the premises.