How Often Can a Landlord Raise Rent in California? Limits and Notice

In California, a landlord can raise the rent no more than twice in any 12-month period on most residential rentals, and the two increases combined cannot exceed 5% plus the local inflation rate, with a hard ceiling of 10%. Those limits come from the Tenant Protection Act of 2019 (AB 1482), which stays in force through January 1, 2030.¹ Some properties are exempt from the state cap, and many cities have stricter local rules that override it.

Twice in Any 12 Months, and No More

The frequency limit is two increases per rolling 12-month window. The clock starts on the date of the first increase, not on January 1. A landlord who splits the annual hike into two smaller notices still cannot exceed the annual cap in total. The rule is designed to stop a landlord from stacking three or four smaller increases through the year to sidestep the ceiling.

The Dollar Cap: 5% Plus Local CPI, Never Above 10%

The maximum annual rent increase is 5% plus the percentage change in the regional Consumer Price Index, or 10%, whichever is lower. Ten percent is an absolute ceiling. Even if regional inflation runs hot, the combined yearly increase can never exceed 10% of the lowest rent charged during the previous 12 months.¹

The CPI used is the CPI-U for the metropolitan area where the property sits, measured from April of the prior year to April of the current year. Where no regional index exists, the statewide California CPI-U applies. Because inflation varies across the state, the effective cap does too. In the Los Angeles area, the maximum allowable increase as of August 2025 is 8% (5% plus a 3% CPI).² The California Department of Industrial Relations maintains a CPI calculator you can use to look up your region’s rate.³

Fixed-Term Leases Versus Month-to-Month

If you signed a lease with a set end date, the landlord generally cannot raise your rent before that date. The only exception is a rent-escalation clause built into the lease itself. Without one, the rent is locked until the lease expires.² At renewal, the landlord can propose new rent, but it still has to fit inside the AB 1482 cap on covered properties.

Month-to-month tenancies work differently. There is no fixed end date, so the landlord can raise rent at any point with proper written notice, subject to the same two-per-year frequency limit and the same annual cap. This is where the frequency rule matters most.

Which Properties Are Exempt From the Cap

AB 1482 does not cover every rental. On exempt properties, the state imposes no frequency limit and no percentage cap, though local ordinances and emergency price-gouging rules can still apply. The main exemptions:

Properties with a certificate of occupancy issued within the last 15 years. This is a rolling window, so a unit built in 2011 became covered starting in 2026.⁴
Single-family homes and condos, but only if the owner is a natural person (not a corporation, REIT, or LLC with a corporate member) and the landlord has given the tenant the required written notice of exemption.
Owner-occupied duplexes where the owner has lived in one unit as a primary residence since the tenancy began.

The Written-Notice Trap for Single-Family Homes and Condos

The single-family and condo exemption is not automatic. The landlord has to include specific notice language in the lease stating that the property is not subject to the rent cap under Civil Code Section 1947.12 or the just cause eviction rules under Section 1946.2, and confirming the owner is not a corporation, REIT, or qualifying LLC. For tenancies that began or renewed on or after July 1, 2020, this notice must appear in the rental agreement itself.¹ If you never received that notice, the property is not exempt, and the state cap applies regardless of the housing type.

City Rent Control Can Be Stricter

AB 1482 sets a floor, not a ceiling. Cities with their own rent stabilization ordinances can impose tighter limits, and where a local rule is more protective, the local rule wins.⁵ Los Angeles, San Francisco, Oakland, and Berkeley all run rent stabilization programs with annual caps often well below the state formula. If you rent in one of these cities, the local cap almost certainly governs your rent.

Banked Increases Can Look Like a Spike

Many local rent control ordinances let landlords “bank” unused annual increases and apply them in a later year. If a landlord skips an increase one year, they can stack it on top of the following year’s allowable increase. Most cities put a ceiling on how much of a banked increase can be applied at once. Hayward and Mountain View cap the total annual increase (including any banked amount) at 10%; Richmond caps it at 5%; Oakland limits it to three times the current general increase; San Francisco allows banked increases with no specific annual limit beyond the banked amount itself.⁶ Before assuming an unusually large increase in a rent-controlled city is illegal, check whether your local ordinance permits banking.

Written Notice Is Required Every Time

No rent increase is enforceable without proper written notice delivered in advance. California Civil Code Section 827 sets two tiers based on the size of the increase:

30 days’ notice if the increase, alone or combined with any other increases in the preceding 12 months, totals 10% or less of the rent.
90 days’ notice if the cumulative increase over the preceding 12 months exceeds 10%.⁷

Because AB 1482 caps most increases at 10% or below, the 90-day rule typically only comes up on exempt properties. But on an exempt property, a landlord who imposes two increases in one year that together exceed 10% must give the full 90 days for whichever increase pushes the total past the threshold.

The notice has to be in writing. A phone call, text, or email does not satisfy the requirement.⁸ If the notice is served by mail, extra days are added to the notice period under Code of Civil Procedure Section 1013. An increase served without proper written notice, or with too short a notice period, is not enforceable.

During a Declared Emergency, the 10% Cap Applies to Everyone

Even properties exempt from AB 1482 face limits during declared emergencies. California Penal Code Section 396 makes it unlawful to raise rent more than 10% above the pre-emergency price once a state or local emergency is declared.⁹ This cap covers existing tenancies and new leases and reaches units that would otherwise have no rent ceiling at all.

The protection begins on the emergency declaration and lasts for its duration plus any extensions. The January 2025 Southern California wildfires triggered these protections across Los Angeles and Ventura counties, and state and county orders extended them past the initial window. Violating the anti-gouging law is a misdemeanor and can carry civil penalties as well. If a disaster declaration is active in your area, check whether it covers your rental, because AB 1482 exemptions do not shield a landlord from Section 396.

Retaliation Is Not Allowed

California law prohibits raising rent to retaliate against a tenant for exercising legal rights. Under Civil Code Section 1942.5, a rent increase imposed within 180 days after a tenant makes a good-faith complaint about the property’s condition, whether to the landlord or to a government agency, is presumed retaliatory.¹⁰ The presumption shifts the burden to the landlord to prove a legitimate reason, such as a scheduled increase applied building-wide. It is rebuttable, but the 180-day window gives tenants real breathing room after reporting a problem.

If a Rent Increase Looks Unlawful

Start with a written response to your landlord identifying the specific problem: the percentage exceeds the cap, the notice period was too short, or the property was never properly exempted. Many smaller landlords misunderstand the rules, and a clear letter often resolves the issue.

If the landlord does not back down, you are not obligated to pay the unlawful portion. You can keep paying your previous lawful rent. If the landlord then tries to evict you for nonpayment, the illegal increase is a defense in the eviction case.²

In cities with rent control programs, you often have an additional tool: filing a petition with the local rent board. Deadlines and procedures vary, and missing a filing window can limit your options, so check with your city’s rent board or housing department as soon as you receive an increase you think is wrong.

The Statewide Rules Are Set to Expire in 2030

AB 1482 has a built-in sunset date of January 1, 2030.¹ Unless the legislature extends or replaces the law, the statewide cap and the two-per-year frequency limit will disappear after that date. Local rent control ordinances would remain in force in the cities that have them, but tenants outside those cities would lose the state-level protection. Proposals to extend or modify the law are likely as 2030 approaches.

1
SF.gov. The California Tenant Protection Act of 2019 (AB 1482)
2
Los Angeles County Department of Consumer and Business Affairs. Rent Increases
3
California Department of Industrial Relations. Consumer Price Index Calculator
4
Berkeley Rent Board. AB 1482 – The California Tenant Protection Act of 2019
5
City of Alameda Rent Program. AB 1482 – California Tenant Protection Act
6
California Department of Justice. Local Rent Stabilization Laws – Permissible Rent Increases
7
California Legislative Information. California Civil Code 827
8
State of California Department of Justice. Landlord-Tenant Issues
9
California Legislative Information. California Penal Code 396
10
Justia. CACI No. 4321 – Affirmative Defense – Retaliatory Eviction – Tenant Complaint (Civil Code 1942.5)