The rule
90 days' notice for a space-rent increase. There is no state cap — but more than 100 California cities and counties cap park rents locally, so a park verdict routes to the local ordinance before it calls anything legal.
What to do with an increase letter
- Run the checker with the lot-rent numbers — the park ladder is separate from the apartment one.
- Ask the park, in writing, for the authority it relies on: the statute, and any hardship or justification filing if it claims one.
- Talk to your neighbors before you answer. Park law is full of collective triggers — mediation petitions, objection windows — that one household cannot pull alone.
- Never stop paying lot rent on a hunch. A park eviction moves your home, not just your tenancy.
Source: Cal. Civ. Code § 798.30 (Mobilehome Residency Law). Rules checked October 2026