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Alameda County, California

Alameda County Landlord-Tenant Laws

Security deposit limits, eviction notices, rent control, and more for Alameda County, California.

How we research these summaries

Every rule on this page is drawn from state statutes and municipal codes and summarized with AI assistance. Each one cites the statute it's based on and links to a published text of that law so you can read it firsthand. Where a page says a city or county has no local rule on a topic, that means none was found for the topics covered here — not that none exists. Local governments also regulate rental housing in ways these pages don't track, including registration, licensing, inspections and habitability standards. These summaries may be incomplete or out of date, laws change often, and every property and tenancy has specifics a summary can't capture — so treat this as a starting point for your own research, not as legal advice, and check with the local jurisdiction and a qualified attorney before acting on your particular situation.

What to Know in Alameda County

Sources last checked July 2026

Alameda County's Just Cause for Eviction Ordinance (No. O-2025-9), effective March 6, 2025, applies to unincorporated areas, including the Eden Area's more than 60,000 renters. Landlords must copy the County Community Development Agency on every termination notice, and no-fault relocation assistance runs to two months' rent — double the state minimum — capped at $10,000. Households with an elderly, disabled, or minor member get 90 days' notice instead of the standard 60. The county sets no local cap on rent increases; those remain governed by the statewide AB 1482 formula.

  • Alameda County Ordinance O-2025-9 (effective March 6, 2025) establishes just-cause eviction protections for tenants in unincorporated areas of Alameda County, covering over...
  • 30-day move-out notice required for month-to-month tenancies
  • Security deposits capped at 1 month's rent
  • 30-day advance written notice required for rent increases
  • Rent increases capped at 5% + CPI (maximum 10%) per year
5 rules summarized · Each linked to the law it cites

Alameda County Local Rules

Eviction Notice Requirements

What are the eviction notice requirements in Alameda County?

Alameda County Ordinance O-2025-9 (effective March 6, 2025) establishes just-cause eviction protections for tenants in unincorporated areas of Alameda County, covering over 60,000 renters in the Eden Area and other unincorporated communities. Landlords may only evict for 11 at-fault reasons (nonpayment of rent, material lease violations, nuisance, property damage, refusal to execute renewal lease, criminal activity, unauthorized subletting, denial of landlord access, illegal property use, failure to vacate after employment termination, refusal to allow entry) or 4 no-fault reasons (owner/family member occupancy, withdrawal from rental market, government order compliance, or demolition/substantial remodeling). Landlords must serve a copy of every termination notice to the County Community Development Agency by email (JustCauseCDA@acgov.org) or mail. No-fault eviction notices must disclose the right to and amount of relocation assistance. Failure to notify the county may be used as an affirmative defense in eviction proceedings.

Alameda County Ordinance No. O-2025-9 (Just Cause for Eviction)
Move-Out & Lease Termination Notice

What is the move-out notice requirement in Alameda County?

In unincorporated Alameda County, landlords must comply with Ordinance O-2025-9 requirements before terminating a tenancy. In addition to California's standard notice periods (30 days for tenancies under 1 year, 60 days for tenancies of 1 year or more), landlords must establish a valid just-cause ground and copy the County Community Development Agency on all termination notices. No-fault terminations require 90 days notice (not 60) where a household member is under 18, elderly, disabled, or lower-income. Relocation assistance is 2 months rent — double the state minimum — capped at $10,000 and payable within 15 days. The notice must include a written explanation of the tenant's right to that assistance and the amount owed. Failure to include this information or to notify the county may be used as an affirmative defense by the tenant in unlawful detainer proceedings.

Alameda County Ordinance No. O-2025-9; California Civil Code §§ 1946, 1946.1

Applicable California State Rules

These state-level rules apply in Alameda County where no local override exists.

Security Deposit Limits State Law

What is the security deposit limit in Alameda County?

Effective July 1, 2024, landlords may not demand or receive a security deposit exceeding 1 month's rent for residential units, regardless of whether furnished or unfurnished. All deposits (pet, cleaning, last month's rent) count toward this cap. Exception: small landlords who are natural persons or LLCs with all natural-person members owning no more than 2 residential rental properties with a combined total of 4 or fewer units may collect up to 2 months' rent. The exception does not apply if the tenant is a military service member.

California Civil Code § 1950.5 (as amended by AB 12, Stats. 2023, Ch. 659)
Rent Increase Notice Periods State Law

How much notice is required for rent increases in Alameda County?

Landlords must provide written notice before raising rent on a month-to-month tenancy. A minimum 30 days' written notice is required when the increase is 10% or less of the lowest rent charged in the preceding 12 months. A minimum 90 days' written notice is required when the increase exceeds 10% of the lowest rent charged in the preceding 12 months, either individually or cumulatively with prior increases over that period.

California Civil Code § 827
Rent Control / Rent Increase Caps State Law

Is there rent control in Alameda County?

Under the Tenant Protection Act of 2019 (AB 1482), landlords may not increase rent more than 5% plus the percentage change in the regional Consumer Price Index (CPI) for All Urban Consumers, or 10%, whichever is lower, in any 12-month period. Rent may not be raised more than twice in a 12-month period, and the combined increases cannot exceed the cap. Exempt properties include those built within the last 15 years, single-family homes and condos where the owner provided a required statutory exemption notice, and units subject to a stricter local rent ordinance. This law expires January 1, 2030.

California Civil Code § 1947.12 (AB 1482, Stats. 2019, Ch. 597)

Other California Cities & Counties

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