Arizona has no statutory cap on how much a landlord may raise rent and no dedicated rent-increase notice statute. For a month-to-month tenancy, a rent change is implemented by serving the 30-day termination/change notice tied to the periodic rental date under A.R.S. § 33-1375. Fixed-term leases cannot be raised mid-term.
Arizona does not regulate rent amounts or increases for residential tenancies, and state law preempts local rent control. To change rent on a month-to-month tenancy, the landlord effectively terminates the existing terms by giving written notice 'at least thirty days prior to the periodic rental date' under A.R.S. § 33-1375(B); week-to-week tenancies require at least ten days' notice. During a fixed-term lease, rent stays as written unless the lease itself permits a change. There is no required justification and no maximum percentage. Tenants who reject the new rent may instead give matching notice and move out.
No specific statutory penalty. A landlord who raises rent without proper 30-day notice cannot enforce the higher amount until valid notice expires; the prior rent remains owed in the interim.
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