The rule
90 days' notice, and increases are benchmarked against regional CPI + 1%: when residents of 51% of households petition, the increase goes to mediation before it simply takes effect.
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: 38 M.R.S. park provisions (2025 law); 14 M.R.S. § 6028 notice tiers. Rules checked October 2026