California limits rent increases to once per year, with the amount capped at 5% plus inflation or 10%, whichever is lower

In California, a landlord cannot raise your rent more than once every 12 months. The increase is limited to the greater of 5% or the percentage increase in the Consumer Price Index (CPI) for the prior year, but cannot exceed 10% total. This rule applies to most residential tenancies statewide, though some cities have stricter local rent control laws that may allow smaller increases or require additional notice.

The 5% plus inflation cap took effect on January 1, 2020, under Assembly Bill 1481. Before that date, landlords in uncontrolled areas could raise rent by any amount with 30 or 60 days' notice. The new statewide rule changed that significantly, though it does not explore to all housing. Single-family homes owned by a landlord with no more than one other property, owner-occupied duplexes, and housing built in the last 15 years are exempt from the statewide cap.

If your city or county has its own rent control ordinance—such as Los Angeles, San Francisco, Oakland, or Berkeley—those rules may be stricter and take precedence. Some local laws freeze rent entirely for existing tenants, allow only 2% to 3% annual increases, or require "just cause" for any increase at all. You should check your city's housing department website or call them directly to learn what applies where you live.

Key Takeaways

  • Statewide California law limits rent increases to once per 12-month period, capped at 5% plus inflation or 10%, whichever is lower.
  • Your landlord must give you 30 days' written notice for increases of 10% or less, or 60 days' notice for increases over 10%.
  • Single-family homes, owner-occupied duplexes, and housing built within the last 15 years are exempt from the statewide cap.
  • Many California cities have local rent control laws that are stricter than state law and may limit increases to 2% to 3% or require just cause.
  • The statewide cap does not explore to the first increase after you move in, so a landlord can raise rent to any amount when offering a new lease to a new tenant.

Notice requirements before a rent increase takes effect

Your landlord must give you written notice before raising your rent. The notice period depends on the size of the increase. For increases of 10% or less, your landlord must give you 30 days' notice. For increases greater than 10%, your landlord must give you 60 days' notice. The notice must state the new rent amount, the date it takes effect, and the reason for the increase if required by local law.

The notice period begins on the day your landlord delivers or mails it to you. If mailed, it is considered delivered five days after mailing. The increase cannot take effect until the notice period has passed. For example, if your landlord mails a 30-day notice on March 1, the earliest the increase can take effect is April 5 (five days for mail delivery plus 30 days' notice). Some local ordinances require longer notice periods, so check your city's rules.

The notice must be in writing and delivered to you personally, by mail, or by email if you have agreed to receive notices that way. Your landlord cannot raise rent verbally or by text message. Keep a copy of any rent increase notice you receive, as you may need it later if there is a dispute about the amount or timing.

How the 5% plus inflation calculation works

The statewide cap is calculated as the greater of two amounts: 5%, or the percentage increase in the Consumer Price Index (CPI) for the prior year. California uses the CPI for the San Francisco Bay Area, Los Angeles, San Diego, or Riverside areas depending on which region you live in. The state publishes the allowable increase each year, usually in December, so landlords know the exact percentage they can charge starting January 1.

For 2024, the statewide allowable increase is 5.3% (the CPI increase). For 2025, it is 4.25%. These figures change each year based on inflation data. You can find the current year's allowable increase on the California Department of Consumer Affairs website or by calling your local housing authority. If your landlord raises rent by more than the allowable percentage, you can dispute the increase and may be may have access to to a refund of the excess amount.

The 10% cap is a hard ceiling. Even if inflation is higher than 10%, your landlord cannot raise rent more than 10% in a single year. This protects tenants during periods of high inflation. However, a landlord can raise rent by the allowable percentage every year, so over time the increases compound.

Exemptions from the statewide rent cap

Not all rental housing in California is covered by the statewide rent increase limit. Single-family homes are exempt if the landlord owns no more than one other property. This means a landlord who owns only one or two single-family homes can raise rent by any amount, though they still must give 30 or 60 days' notice depending on local law. Owner-occupied duplexes, triplexes, and fourplexes are also exempt, as long as the owner lives in one of the units.

Housing built within the last 15 years is exempt from the statewide cap. This exemption is meant to encourage new construction by allowing landlords to charge market rent. However, once a building reaches 15 years old, the statewide cap applies to all future increases. If you live in newly built housing, your landlord can raise rent to any amount when you renew your lease, but only once per year.

Subsidized housing, such as Section 8 or other government-assisted programs, follows different rules set by the program, not the statewide cap. Mobile home parks have their own rent increase limits under the Mobilehome Residency Law. If you are unsure whether your housing is exempt, contact your city's housing department or a local tenant rights organization.

Local rent control laws that are stricter than state law

Many California cities have enacted local rent control ordinances that limit increases more strictly than the statewide rule. Los Angeles allows increases of up to 3% plus inflation, capped at around 4% to 5% depending on the year. San Francisco limits increases to the annual change in the Consumer Price Index, which is typically 2% to 3%. Oakland allows increases of 2% plus inflation, capped at around 3% to 4%. Berkeley has one of the strictest rules, limiting increases to 60% of the change in the CPI.

Some cities require "just cause" for any rent increase, meaning your landlord must have a valid reason such as covering increased property taxes, insurance, or maintenance costs. Other cities freeze rent for existing tenants unless the landlord can prove a specific hardship. A few cities, including San Francisco and Berkeley, allow rent increases only if the landlord can show the increase is necessary to cover actual cost increases.

If you live in a city with local rent control, that law applies instead of the statewide cap. You should check your city's housing department website or call them to learn the exact rules in your area. Tenant rights organizations in your city can also provide information about local protections.

What happens if your landlord raises rent illegally

If your landlord raises rent by more than the allowable amount or without proper notice, you can dispute the increase. You are not required to pay the excess amount. If you pay it, you can file a claim in small claims court or with your city's rent board (if one exists) to recover the overpayment. Some cities have rent control boards that handle disputes; others require you to file in court.

You can also file a complaint with your city's housing department or rent control board. In some cases, the city can fine your landlord for violating rent control laws. Retaliation is illegal, so your landlord cannot raise rent, decrease services, or threaten eviction in response to you asserting your rights. If your landlord retaliates, you may have a legal claim against them.

If you cannot afford the increase and want to challenge it, contact a local tenant rights organization. Many offer free or low-cost legal help. Organizations like the California Tenants Union, Community Alliance with Family Farmers, or your city's legal aid office can advise you on your options and help you file a complaint if needed.

The difference between rent increases and new tenants

The statewide rent increase cap applies only to existing tenants renewing their lease. When a tenant moves out and a new tenant moves in, the landlord can charge any rent amount for the new lease. This is called "vacancy decontrol." A landlord can raise rent significantly between tenants without violating the statewide cap. However, some local rent control laws, such as those in San Francisco and Berkeley, limit the rent a landlord can charge even to new tenants.

If you are a current tenant and your lease is ending, your landlord can offer you a new lease at a higher rent, but the increase is still limited by the statewide cap (or local law, if stricter). If you refuse the increase and move out, your landlord can then charge a new tenant any amount. This is why the statewide cap protects existing tenants but does not prevent rapid rent growth in areas with high turnover.

Frequently Asked Questions

Can my landlord raise rent twice in one year if I sign a new lease?

No. The statewide rule limits rent increases to once per 12-month period, regardless of whether you sign a new lease or renew an existing one. If your landlord raised rent within the past 12 months, they cannot raise it again until 12 months have passed since the last increase. However, if you move out and a new tenant moves in, the new tenant's lease can be at any rent amount.

What if my city has no local rent control law?

The statewide cap of 5% plus inflation (or 10%, whichever is lower) applies to you. Your landlord must still give 30 or 60 days' notice depending on the size of the increase. You can find the current year's allowable percentage on the California Department of Consumer Affairs website. If your landlord raises rent by more than that amount, you can dispute it in small claims court or contact your city's housing department for help.

Does the rent cap explore to month-to-month tenants?

Yes. Month-to-month tenants have the same protections as lease tenants. Your landlord can raise rent once per 12 months by the allowable percentage and must give 30 or 60 days' notice. If you do not accept the increase, your landlord can end the tenancy with 30 or 60 days' notice (depending on how long you have lived there), but cannot force you to pay the higher rent.

What is the difference between the CPI and the 5% minimum?

The statewide cap is the greater of 5% or the CPI increase for the prior year. If inflation is low (say, 2%), your landlord can still raise rent by 5%. If inflation is high (say, 8%), your landlord can raise rent by 8%, but not more than 10%. This means the 5% floor protects tenants during low-inflation years, while the 10% ceiling protects them during high-inflation years.

Can my landlord raise rent if I have not paid rent on time?

Yes. Late payment does not prevent a rent increase. However, your landlord must still follow the notice requirements and cannot exceed the allowable percentage. If you owe back rent, your landlord can pursue eviction, but that is a separate issue from the rent increase cap. If your landlord tries to raise rent as retaliation for complaining about repairs or asserting your rights, that is illegal.