How much can rent be raised in California?
Most rent increases in California are limited to about 10% per year for covered units. If your rent was $2,000, that means the most it could go up in one year is roughly $200.
Step-by-step answer
- Step 1
What the cap actually covers
The 10% cap generally applies to residential units above a certain age. Buildings that are very new, some single-family homes, and owner-occupied properties are often exempt. Check the exemptions before assuming the cap applies.
- Step 2
Quick math
Take your current rent, multiply by 0.10, and that's the biggest annual increase allowed. Anything above that is worth pushing back on in writing.
Most rent increases in California are limited to about 10% per year for covered units. If your rent was $2,000, that means the most it could go up in one year is roughly $200.
The numbers that decide it
- Statewide formula
- 5% + regional CPI
- Cal. Civ. Code §1947.12
- Hard ceiling
- 10%
- The total can never exceed 10% in any 12-month period for covered units
- Typical 2026 cap in most metros
- ≈8–10%
- Depends on your regional CPI figure — check yours before relying on it
- Notice
- 30 or 90 days
- 90 days when the 12-month increase is more than 10%
Figures change — verify against the official source before relying on them.
Doing the 5% + CPI math with your own numbers
The formula is not a single national figure: each region publishes its own CPI, so the same rent can have a different lawful ceiling in Sacramento than in San Diego. Take your regional CPI, add 5, and cap the result at 10. Multiply your current rent by that percentage to get the maximum covered increase over 12 months. If a landlord cannot tell you which CPI figure they used, that is a fair thing to ask for in writing.
Worked example
Worked example: $2,000 rent in Los Angeles
- Start with the current rent: $2,000 per month.
- Check coverage. AB 1482 generally covers units at least 15 years old; many new builds, some single-family homes, and owner-occupied duplexes are exempt, and your notice should state which applies.
- Look up your regional CPI figure. If it is 3.5%, the cap is 5% + 3.5% = 8.5%.
- Apply it: $2,000 × 0.085 = $170, so the highest covered rent would be about $2,170.
- Compare the ceiling: 10% of $2,000 is $200, so even a high CPI year would stop around $2,200.
- If the notice says $2,400, that is 20%. On a covered unit that appears to exceed the statutory cap, and because the increase is over 10% it would also generally require 90 days' notice rather than 30.
- If your city has its own stabilization ordinance (Los Angeles, Santa Monica, Oakland, San Francisco, Berkeley), the local cap is often lower and controls instead.
Two numbers decide most California cases: your regional CPI and whether the unit is covered at all. Get both before responding in writing.
Where these rules come from
- Cal. Civ. Code §1947.12 (AB 1482)
The statewide cap: 5% plus regional CPI, never more than 10% total, for most covered units at least 15 years old.
- Cal. Civ. Code §827(b)
Notice rules on month-to-month tenancies: generally 30 days, or 90 days when the increase over 12 months is more than 10%.
- California CPI figures used for the cap
The regional CPI series landlords must use when calculating the 5% + CPI figure for your area.
Check your specific situation
Where do you rent?
Free legal help in California
Walk through three quick steps to find the right tenant-rights program for your situation.
State listings sourced from the federal Legal Services Corporation (LSC) grantee directory. Educational information, not legal advice or endorsement.
Other common questions about California
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