AB 1482 Allowable Rent Increase Calculator
Updated August 1st, 2025
Understanding AB 1482 and the CPI Rent Increase Calculator
Assembly Bill 1482, which came into effect on January 1, 2020, established statewide rent control in California. This law limits annual rent increases for most residential rental properties. Specifically, rent increases are capped at 5% plus the local Consumer Price Index (CPI) but cannot exceed a total of 10% per year, whichever is lower.
Note on “All Other Counties”:
If you live in a county without specific local CPI data, the state of California applies a default CPI increase of 3.6%. Combined with the 5% statewide base increase under AB 1482, the maximum allowable rent increase for these counties is 8.6%.
*This calculator is provided for your information and convenience. It’s important that you verify legal compliance and use the calculator appropriately. Also, verify AB 1482’s rent caps and increase effective dates in addition to stipulations further provided by your county or local regulations.
How to Use This Calculator
- Enter your current rent in the provided field.
- Select your county from the drop-down menu.
- Click “Calculate” to determine the maximum allowable rent increase and the new rent amount.
Allowable Rent Increases Per County for 2026 – 2027
| County | CPI Increase | Allowable Increase |
|---|---|---|
| Los Angeles | 3.7% | 8.7% |
| Orange | 3.7% | 8.7% |
| Riverside | 3.1% | 8.1% |
| San Bernardino | 3.1% | 8.1% |
| San Diego | 3.2% | 8.2% |
| Alameda | 3.8% | 8.8% |
| Contra Costa | 3.8% | 8.8% |
| Marin | 3.8% | 8.8% |
| San Francisco | 3.8% | 8.8% |
| San Mateo | 3.8% | 8.8% |
| All other counties | 3.6% | 8.6% |
