A rent-increase notice has two jobs. It must state the change clearly, and it must reach the resident through a method and timeline that support the proposed effective date. The percentage is only one control. The property file, lease, local rule, service record, and first affected ledger entry must tell the same story.
Start with the effective date and the property file
Choose the effective date before you choose the cap. The effective date determines which statewide or local period applies. Start with the property address, incorporated city or unincorporated area, unit type, certificate-of-occupancy history, ownership structure, lease term, resident rent history, and any subsidy or affordability restriction. The California 2026–2027 rent-cap guide explains the statewide calculation. This guide focuses on the notice and service controls that follow the calculation.
Do not prepare the notice until you can answer these questions:
- Which rule controls this unit, and is a stricter local rule in force?
- What is the lowest gross rent charged during the applicable lookback period?
- How many increases have already occurred during the relevant 12-month period?
- Is the tenancy periodic or fixed term, and does the lease authorize the proposed change?
- What local registration, disclosure, form, or proof-of-service requirement applies?
California notice timing
California Civil Code section 827 requires written notice for a residential rent increase. For a proposed increase of 10% or less of the rental amount charged to that tenant at any time during the prior 12 months, the notice must be delivered at least 30 days before the effective date. If the proposed increase is more than 10%, alone or combined with other increases during that period, the notice must be delivered at least 90 days before the effective date. Read the current Civil Code section 827. The cap under AB 1482 or a local ordinance can be lower than the 10% notice threshold.
| Proposed increase compared with rent charged during prior 12 months | Minimum state notice timing | Owner control |
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| 10% or less | At least 30 days before the effective date | Use the rent history, not only the current charge, for the comparison. |
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| More than 10% | At least 90 days before the effective date | Combine increases during the lookback period when testing the threshold. |
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| A lease, program, or local rule requires more time | Use the longer period | Record the source of the longer period in the notice file. |
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The notice period is separate from the rent-cap calculation. A compliant percentage does not cure late service, and timely service does not make an excessive increase lawful.
How to serve and document the notice
For residential rent increases, section 827 identifies personal delivery or service by mail under Code of Civil Procedure section 1013. If mailing is used, CCP section 1013 adds calendar days to the applicable notice period based on where the mailing and address are located. Service by mail is complete at deposit, but the extra time still matters to the effective date.
| Mailing and address location | Extension stated in CCP section 1013 |
|---|
| Both in California | 5 calendar days |
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| One in California and the other elsewhere in the United States | 10 calendar days |
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| Address in the Secretary of State address-confidentiality program | 12 calendar days |
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| One outside the United States | 20 calendar days |
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Do not treat a posting, substituted delivery, email, or text message as a substitute for the service route required for a rent-increase notice unless the rule that applies to the property expressly supports it. The general service methods in Code of Civil Procedure section 1162 are not a reason to skip the more specific rent-increase rule in section 827. Keep the current notice, service date, method, recipient address, mailing proof, returned-mail record, and any local filing confirmation together.
Local rules can add a second layer
Lease terms and the notice file
A fixed-term lease is not automatically a periodic tenancy. Review the lease, amendments, statutory disclosures, exemption language, concessions, and local addenda before serving a mid-term change. A periodic tenancy may not need a new lease for every increase, but the notice and ledger must match the existing agreement and the applicable rule.
Pre-service and first-ledger checklist
- Confirm the property address, city, county status, unit type, and rule that controls.
- Confirm the effective date falls inside the intended cap period.
- Reconcile the lowest gross rent, concessions, credits, and every prior increase.
- Test both the cap and the 10% notice threshold.
- Confirm the lease term and required disclosures.
- Use the current local form or disclosure when a local program requires one.
- Choose the authorized service method and calculate any mailing extension.
- Save proof of service and the exact notice delivered.
- Schedule the recurring charge only for the lawful effective date.
- Assign a second reviewer to compare the notice, service record, and first affected ledger entry.
Frequently asked questions
Is 60 days the standard California rent-increase notice?
No. For the residential rent-increase rule in Civil Code section 827, the general periods are at least 30 days for an increase at or below the 10% threshold and at least 90 days for an increase above it. A lease, program, or local rule may require more time.
Does mailing add five days?
When both the mailing location and the address are in California, CCP section 1013 states a five-calendar-day extension. Other locations use different extensions. Build the mailing time into the effective-date calculation.
Can the owner serve the notice by email?
Do not rely on email alone for a residential rent-increase notice unless the applicable law, local program, and written agreement clearly authorize that method. Keep a service record that shows the route actually used.
Can a compliant notice fix a wrong rent calculation?
No. Notice timing and rent amount are separate controls. A correct service record cannot cure a cap, coverage, prior-increase, concession, or lease error.
Related Coastline resources
Review the notice before service
Request Coastline Equity's Rent Increase Pre-Notice Review before the notice is served.
This educational guide is not legal advice. Confirm the current official statute, agency instructions, and local requirements for the property before serving a rent-increase notice.
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