California · State law
8.1–8.8%
Under California's statewide cap (AB 1482), the maximum rent increase for increases starting between August 1, 2026 and July 31, 2027 is 8.7% in Los Angeles and Orange counties, 8.1% in Riverside and San Bernardino, 8.2% in San Diego, 8.8% in the San Francisco Area and 8.6% in all other counties.
The cap depends on which CPI region the rental is in. Pick your region below.
Increases starting 8/1/25–7/31/26 (hollow) and 8/1/26–7/31/27 (solid). Axis starts at 5%.
Source: State of California, Department of Justice, Office of the Attorney General (Limits on Rent Increases).
Recent changes
For increases starting between August 1, 2026 and July 31, 2027, the Attorney General's chart lists 8.7% (Los Angeles Area), 8.1% (Riverside Area), 8.2% (San Diego Area), 8.8% (San Francisco Area) and 8.6% for all other counties.
Official source: California Attorney General: Limits on Rent Increases ↗
§ 1 · The formula
5% + regional CPI (April to April), capped at 10%
Annual increases are capped at 5% plus the percentage change in the cost of living, up to a maximum of 10%, in any 12-month period. The cost-of-living change uses April CPI data from the U.S. Bureau of Labor Statistics for the Los Angeles, Riverside, San Francisco and San Diego areas (March where April is not published), and the April California CPI from the Department of Industrial Relations for all other counties.
| Series | From | To | Change | Formula | Compare |
|---|---|---|---|---|---|
| CPI-U, Los Angeles-Long Beach-Anaheim | April 2025: 342.565 | April 2026: 355.166 | 3.68% | + 5% = 8.68% | Official: 8.7% (Los Angeles Area) |
| CPI-U, San Francisco-Oakland-Hayward | April 2025: 355.707 | April 2026: 369.215 | 3.80% | + 5% = 8.80% | Official: 8.8% (San Francisco Area) |
Index values from api.bls.gov (not seasonally adjusted), pulled October 18, 2026. Agencies may use different months, averages or rounding, so the headline figure on this page is always the officially published one.
Law: Tenant Protection Act (AB 1482), Civil Code § 1947.12.
§ 2 · Coverage
§ 3 · Timing
Notice: Not covered by the AG chart. California generally requires 30 days' written notice for increases of 10% or less and 90 days for larger ones; confirm with official guidance.
Next change: New regional figures take effect August 1, 2027. They follow the April 2027 CPI, which BLS publishes in May 2027.
| Period | Allowed |
|---|---|
| Aug 1, 2025 – Jul 31, 2026 | LA 8% · Riverside 7.5% · San Diego 8.8% · SF Area 6.3% · Other 7.7% |
§ 4 · Sources
“Los Angeles Area: Los Angeles County Orange County 8% 8.7% Riverside Area: Riverside County San Bernardino County 7.5% 8.1% San Diego Area: San Diego County 8.8% 8.2% San Francisco Area: Alameda County Contra Costa County Marin County San Francisco County San Mateo County 6.3% 8.8% All Other Counties 7.7% 8.6%”
“the notice shall be delivered at least 30 days before the effective date of the increase”
“Housing that has been issued a certificate of occupancy within the previous 15 years, unless the housing is a mobilehome.”
See something out of date? The methodology page explains how we check figures.
§ 5 · Questions
Under California's statewide cap (AB 1482), the maximum rent increase for increases starting between August 1, 2026 and July 31, 2027 is 8.7% in Los Angeles and Orange counties, 8.1% in Riverside and San Bernardino, 8.2% in San Diego, 8.8% in the San Francisco Area and 8.6% in all other counties.
Annual increases are capped at 5% plus the percentage change in the cost of living, up to a maximum of 10%, in any 12-month period. The cost-of-living change uses April CPI data from the U.S. Bureau of Labor Statistics for the Los Angeles, Riverside, San Francisco and San Diego areas (March where April is not published), and the April California CPI from the Department of Industrial Relations for all other counties.
Housing that is 15 years old or newer (the cap applies to housing more than 15 years old). Single-family homes and condos that are not owned by a corporation can be exempt; the AG summary only lists corporate-owned ones as covered (see Civ. Code § 1947.12 for the notice rules). When all tenants move out, the landlord may set the initial rent for new tenants.
New regional figures take effect August 1, 2027. They follow the April 2027 CPI, which BLS publishes in May 2027.
From State of California, Department of Justice, Office of the Attorney General: “Limits on Rent Increases”, which we last checked on October 17, 2026. Always confirm with the agency before relying on it.
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