California Rent Increase Calculator 2025 Statewide Cap

California is one of the few states with a true statewide rent cap. Under the Tenant Protection Act of 2019, Cal. Civ. Code § 1947.12 (AB 1482) limits annual rent increases on covered units to regional CPI + 5%, with a hard ceiling of 10%. For the period running on the CA West Region CPI-U from April 2024 to April 2025, the controlling inflation figure is 3.3%, which sets the 2025 cap at 8.3%. That number applies to the same tenant over a 12-month window, and a landlord may raise rent no more than twice in that window so long as the combined total stays under the cap.

The law reaches most apartments and many rented houses across the state, from Los Angeles to San Jose, but it carves out important exceptions covered below. AB 1482 also pairs with a "just cause" eviction standard under CA Civ. Code § 1946.2, so the same statute that limits how much rent can rise also limits when a tenancy can end. With average rent in this area around $1,782, even a capped increase moves real money, which is why the calculator on this page works the exact percentage for your unit.

What Cal. Civ. Code § 1947.12 actually caps

AB 1482 caps the total rent increase a landlord can impose on a continuing tenant over any 12-month period. The formula is the regional CPI plus 5 percent, never to exceed 10 percent — so the cap is whichever is lower. For 2025, that resolves to 8.3%, built from a 3.3% CA West Region CPI-U reading plus the statutory 5 points.

• The cap applies per tenancy, not per calendar year — it follows the same renter across renewals.
• A landlord may increase rent at most twice in 12 months, and the increases together cannot exceed the cap.
• When a tenant moves out voluntarily, the unit can be re-rented at market rate; the cap resets for the next tenancy.

Cities with their own rent control — including Los Angeles, San Francisco, Oakland, San Jose, Santa Monica, and Berkeley — often set lower local caps that apply instead of the state figure.

How the 2025 number is set

The 8.3% figure is not arbitrary. AB 1482 ties the cap to the change in the regional Consumer Price Index published by the Bureau of Labor Statistics, then adds a fixed 5 percentage points. The relevant input here is the CA West Region CPI-U for April 2024 through April 2025, reported at 3.3%. Add the statutory 5%, and the cap lands at 8.3% — comfortably under the 10% ceiling.

Because CPI is regional, the exact percentage can differ slightly between parts of the state, and it changes each year as new BLS data publishes. The 10% absolute maximum is the one constant: no matter how high inflation runs, a covered California tenant's rent cannot legally rise more than 10% in any 12-month period under § 1947.12. Use the calculator above to apply 8.3% to your current rent rather than estimating by hand.

Which units are exempt

AB 1482 does not cover every rental in California. The most common exemptions are:

• Single-family homes not owned by a corporation, REIT, or an LLC with a corporate member (the owner must serve written notice of the exemption to claim it).
• Condominiums in most cases.
• Buildings issued a certificate of occupancy within the last 15 years — a rolling window, so a building ages into coverage over time.
• Affordable or subsidized housing already governed by a deed restriction or program at a lower cap.

If a landlord wants to rely on the single-family exemption, the tenant must receive the required written notice — skip it and the cap applies anyway. Note that the Costa-Hawkins Act (CC § 1954.50) limits but does not preempt local rent control on pre-1995 multi-unit buildings, so older buildings in rent-controlled cities can still face stricter local rules.

Notice, just cause, and enforcement

A rent increase under AB 1482 must be delivered through a proper written notice, and the percentage cannot exceed the cap in force when the notice takes effect. Beyond the dollar limit, the statute links to CA Civ. Code § 1946.2, the just-cause eviction provision: once a tenant has occupied a covered unit long enough to qualify, the landlord generally needs a legally recognized reason to end the tenancy and, for no-fault grounds, may owe relocation assistance.

If a landlord charges more than the lawful cap, the tenant can dispute the overage, and amounts collected above the limit are recoverable. Local agencies in cities like Berkeley and Santa Monica run rent boards that enforce their own ordinances on top of the state floor, so renters there should check both the state cap and the local one.

Key Rules Summary

Units Exempt from the Cap

Even where a cap applies, the following unit types are typically not covered:

• Single-family homes not owned by a corporation, REIT, or LLC with a corporate member
• Condominiums (in most cases)
• Buildings permitted within the last 15 years (rolling exemption)
• Affordable/subsidized housing already subject to a lower cap

If your unit is exempt, the landlord may raise rent to any market-rate amount with proper notice.

Cities with Local Rent Control Ordinances

These California cities currently have or are actively developing rent stabilization ordinances. Caps and covered-unit definitions vary, check your city's municipal code or housing authority for the current allowable increase.

Frequently Asked Questions

How much can my landlord raise rent in California in 2025?

For units covered by AB 1482, the 2025 cap is 8.3% over a 12-month period. The formula is regional CPI (3.3% on the CA West Region CPI-U) plus 5 percent, and it can never exceed 10 percent. Rent-controlled cities such as Los Angeles, San Francisco, and Oakland may set a lower local limit that applies instead.

Is rent control legal in California?

Yes. California has a statewide rent cap under Cal. Civ. Code § 1947.12 (AB 1482), plus local rent control in cities like San Francisco, Oakland, Berkeley, and Santa Monica. The Costa-Hawkins Act (CC § 1954.50) limits local rent control on certain newer and single-family units but does not preempt it for pre-1995 multi-unit buildings.

How much notice does my landlord have to give before raising rent?

A landlord must deliver a proper written rent-increase notice, and the increase cannot exceed the cap in effect when the notice takes effect. Under AB 1482, rent can be raised at most twice in any 12 months, with the combined increases staying within the 8.3% 2025 cap.

Does the rent cap apply to my unit?

It depends on the unit. AB 1482 generally excludes single-family homes not owned by a corporation, REIT, or LLC with a corporate member (with proper written notice), most condominiums, buildings permitted within the last 15 years, and deed-restricted affordable housing. Most other apartments are covered, and a local ordinance may impose a stricter cap.

This page summarizes California's Tenant Protection Act of 2019 as codified at Cal. Civ. Code § 1947.12, with the companion just-cause provision at CA Civ. Code § 1946.2 and the Costa-Hawkins Act at CC § 1954.50; the 2025 cap of 8.3% reflects the CA West Region CPI-U (April 2024–April 2025) published by the U.S. Bureau of Labor Statistics, plus the statutory 5%. Local rules are administered by city rent boards and the California Department of Housing and Community Development. Last reviewed June 2026. This is general information, not legal advice — consult a qualified California attorney or your local rent board for your specific situation.

Related Guides for California Landlords

Rent Increase Laws in Other States

Statutory data sourced from published California law (Cal. Civ. Code § 1947.12 (AB 1482, Tenant Protection Act 2019)), BLS Consumer Price Index (2024-2025), and state agency publications. Census ACS 2023 5-Year Estimates for average rent. Last updated August 15, 2026. This page is informational only and does not constitute legal advice.