How to Use the Updated CPI Data for Rent Increases Under California’s AB 1482

Learn how California’s updated CPI data affects rent increase limits under AB 1482. Understand what landlords need to do to stay compliant from August 2025 to July 2026.

Understanding the 2025 CPI Update for AB 1482 Rent Increases

California’s statewide rent cap law—formally known as the California Tenant Protection Act (AB 1482)—sets strict limits on how much landlords can raise rent each year for applicable residential properties. With new Consumer Price Index (CPI) data released, it’s essential for rental housing providers to understand how these updates impact rent increase calculations starting August 1, 2025.

What is AB 1482?

AB 1482 limits annual rent increases to 5% plus the regional CPI, or 10% total, whichever is less. These protections apply to most multi-family properties that are more than 15 years old and not subject to local rent control laws.

To calculate rent increases that take effect on or after August 1, landlords must reference the latest CPI numbers as of April (or March if April data is unavailable), based on the property’s county.

2025-2026 CPI Changes: What You Need to Know

The new CPI rates released in spring 2025 apply from August 1, 2025, to July 31, 2026. This updated information ensures that rent increases remain within the legal limits defined by AB 1482.

Key takeaways:

• The CPI varies by region and county, so landlords must reference the appropriate local data.
• The percentage must be rounded to the nearest one-tenth of a percent.
• Rent increases before August 1, 2025, are still governed by the 2024 CPI values.

What Landlords Should Do Now

To stay compliant and avoid potential legal issues, rental housing providers should:

1. Determine if their property is covered under AB 1482.
2. Review the updated CPI data for their property’s location.
3. Use a compliant method for calculating allowable rent increases.
4. Document all communications with tenants regarding rent adjustments.

Compliance Tools and Resources

Although some industry organizations offer CPI calculators and member tools, it’s critical that landlords maintain independent awareness and compliance. Be sure to consult:

• Local rent control ordinances, if applicable.
• California Department of Consumer Affairs or Housing Agency updates.
• Trusted legal counsel or property management experts.

Remember: local rent control laws may differ and may not use the same CPI figure as AB 1482. Always confirm which rules apply to your property.

Rent control in California continues to evolve, and staying informed is vital for protecting your rental business. With the latest CPI data now available, take time to review your rent increase practices before issuing notices for changes effective August 2025 or later.

Stay informed and proactive—review your current policies and rent increase schedules to ensure compliance under AB 1482 for 2025–2026.