Rent Increase Calculator for California Landlords

How AB 1482 Rent Increases Work in California

AB 1482 caps annual rent increases at CPI + 5%, with a maximum of 10% regardless of CPI. For 2025, the Southern California CPI is 3.3%, making the maximum increase 8.3% for covered properties. Increases can only be applied once per 12-month period, and proper written notice must be served. Landlords who fail to comply with these limits may face rent rollback orders, penalties, and tenant lawsuits.

Which Inland Empire Properties Are Covered by AB 1482

How to Serve a Proper Rent Increase Notice

California requires 30 days written notice for rent increases of 10% or less, and 90 days written notice for increases above 10%. Notice must be in writing and properly served. Valid service methods include personal delivery to the tenant, leaving with a household member over 18 and mailing a copy, or posting on the main entry door and mailing a copy. Electronic notice is acceptable only if the tenant has explicitly agreed in writing to receive notices electronically.

The notice must state the dollar amount of the new rent, the effective date of the increase, and must be served the required number of days before the effective date. Errors in notice service can invalidate the rent increase entirely.

When to Call a Professional Property Manager

Magnolia Property Management tracks rent increase eligibility dates for every managed property, prepares legally compliant rent increase notices, serves them correctly and on time, and ensures the increase takes effect without triggering disputes. We monitor changes in California law and update our practices accordingly — including any adjustments to CPI rates that affect the AB 1482 cap. If you are unsure whether your property is covered, when you can increase rent, or how to serve a proper notice, contact us for a free consultation.