Renting · Renting guide · Reviewed July 12, 2026
California rent increases, local rules, and notices
How the statewide rent cap, local rent rules, written notice, just cause, and eviction court papers fit together.
A rent paper is easier to handle once you sort it into the right pile. A rent-increase notice changes the amount. A notice to pay, fix something, or move has a deadline. A Summons and Complaint mean an eviction case has been filed in court.
For many rentals, the Tenant Protection Act limits the total increase over 12 months. The cap is 5 percent plus the local change in the cost of living, or 10 percent, whichever is lower. The math starts with the lowest gross rent charged during the prior 12 months. The same tenant generally cannot receive more than two increase steps in that time.
The California wrinkle is the local layer. A city or county may have a rent board or a lower cap. It may also require registration, extra notice language, stronger just-cause rules, or more moving help. The exact address matters more than the mailing city on an envelope.
Coverage comes before the math. Newer housing and several other groups can be outside the state cap. Some separately owned homes also need exact written exemption language. An exempt home can still be covered by a lease, notice rules, emergency price rules, or stronger local law.
First moves
- 1
Save the lease, every addendum, the envelope or email, and the full notice. Write down when and how it arrived.
- 2
Confirm the exact address, city limits, county, building type, move-in date, and any owner-occupancy or exemption language in the lease.
- 3
For a rent increase, list the lowest gross rent charged during the prior 12 months, every increase in that period, the new amount, and the effective date.
- 4
Check the official city and county sites for a rent board, housing department, tenant-protection office, or local ordinance.
- 5
Match the paper to the state source: rent cap, rent-change notice, tenancy termination, or eviction court case.
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When a deadline or court paper is involved, use California Courts self-help and legal help promptly while continuing to protect the deadline.
Worth knowing
Coverage comes before the percentage
The statewide cap covers many rentals, but not every home. Housing built within the prior 15 years is one common group outside the cap. Some deed-restricted affordable homes and school dorms are also outside it. A qualifying owner-occupied duplex may be exempt too. Some single-family homes and condos can qualify when the ownership and written-notice rules are met.
That list is only a first sort. Ownership, the exemption notice, building age, local law, and housing type can change the result. Use the current statute and the local office for the address.
The statewide cap follows the effective date
The cost-of-living part of the formula depends on the region and the effective date. California uses a new yearly measure for increases that take effect on or after August 1. The Attorney General posts a current table by region. A rate remembered from last year can be wrong this year.
The law measures the cap against the lowest gross rent charged during the prior 12 months. Discounts, credits, and move-in deals can make that record less simple. Keep the lease and rent ledger close.
Notice time and allowed amount are separate tests
For a month-to-month home, Civil Code section 827 sets the basic notice clock. An increase of 10 percent or less generally needs at least 30 days' written notice. That test counts other increases during the prior 12 months. An increase over 10 percent generally needs at least 90 days' notice. Service by mail can affect timing.
Enough notice does not make an otherwise unlawful amount lawful. A fixed-term lease can also limit an increase during the term unless the agreement permits it. The local ordinance may add another step.
Just cause is a different protection
The statewide just-cause rule generally begins after the stay period in Civil Code section 1946.2 is met. It separates at-fault reasons from no-fault reasons. Unpaid rent and a major lease breach are at-fault examples. An owner move-in, withdrawal from the rental market, a government order, demolition, or major remodel may use the no-fault lane.
When the statewide no-fault rule applies, the notice must address moving help. The owner generally pays one month's rent or waives the final month. Local law can give stronger protection or more help.
A landlord notice is not a court case
A landlord notice warns that a court case may follow if the stated problem is not resolved or the tenant does not move by the deadline. A Summons and Complaint mean the case has already been filed. The response time then depends on how the court papers were served.
Do not wait for the rent board or landlord to pause a court deadline. Use the current California Courts instructions, the local court self-help center, and legal help as soon as court papers arrive.
Watch for
- 1
The statewide rule is not a blanket 10 percent allowance. It is 5 percent plus the applicable cost-of-living change, capped at 10 percent.
- 2
A local rule may be more protective and may use a different annual period, registration system, petition process, or notice form.
- 3
An exemption can depend on building age, ownership, owner occupancy, and exact written language. A verbal statement is not the whole check.
- 4
The 30-day and 90-day rules concern notice timing. They do not decide whether the amount itself is allowed.
- 5
A 3-day, 30-day, or 60-day landlord notice is not a judgment. It can still start a short path toward a court filing.
- 6
A Summons and Complaint use court deadlines tied to service. Read the current court instructions and get help promptly.
- 7
An emergency declaration can trigger a separate rental price rule. Check current state and local emergency pages when that applies.