State rules
30 days' notice for an increase of 10% or less (cumulative over 12 months); 90 days above 10%. Add 5 days if the notice was mailed inside California.
| Amount cap | A statewide percentage cap applies — see below. |
|---|---|
| Notice for an increase | 30 days for an increase of 10% or less; 90 days above that. |
| Frequency | At most two increases in any 12 months, and together they must fit under the cap. |
| Retaliation window | 180 days — an increase inside it is presumed retaliatory. |
| Local rent caps | Not barred statewide; check your city. |
| Sources | Cal. Civ. Code §§ 1947.12, 827 |
The state cap is 5% plus your region’s consumer price index, never more than 10%. For increases taking effect August 1, 2026 – July 31, 2027. The cycle resets every August 1.
| Region | CPI change | Maximum increase |
|---|---|---|
| Los Angeles – Long Beach – Anaheim (incl. Orange County) | 3.7% | 8.7% |
| San Francisco – Oakland – Hayward (East Bay) | 3.8% | 8.8% |
| San Diego – Carlsbad | 3.2% | 8.2% |
| Riverside – San Bernardino – Ontario | 3.1% | 8.1% |
| Western region (counties priced off the western index) | 3.5% | 8.5% |
| Anywhere else in California (statewide index) | 3.6% | 8.6% |
Single-family homes and condos are exempt only if the owner is not a corporation, a REIT, or an LLC with a corporate member and you received the statutory exemption notice in writing. Miss either condition and the cap applies. Buildings first occupied within the last 15 years are exempt; owner-occupied duplexes are exempt; and a stricter city ordinance (Los Angeles, San Francisco, Oakland, Berkeley, San José, Santa Monica and more) beats the state number wherever it applies.
Mobilehome Residency Law: 90 days' notice for a lot-rent increase, and more than 100 cities and counties add their own park caps — the parks module routes you.
Own a manufactured home on a rented lot? California has a dedicated park file: lot-rent rules for California parks.
Rules checked October 2026
Sources: Cal. Civ. Code §§ 1947.12, 827. Information, not legal advice.