Contra Costa County Landlord-Tenant Law

The East Bay’s suburban backbone — Richmond’s local rent ordinance, AB 1482 across most of the county, and a diverse rental market spanning refinery towns, BART commuter suburbs, and the affluent Lamorinda corridor

Contra Costa County Rental Market Overview

Contra Costa County occupies the northeastern quadrant of the Bay Area, wrapping around the northern and eastern shores of San Francisco Bay and extending inland through the Diablo Valley and the Tri-Valley to the border with San Joaquin County. With roughly 1.2 million residents, it is one of the Bay Area’s largest counties by population and one of its most economically diverse. The western portion of the county — Richmond, San Pablo, El Cerrito — is industrial, working-class, and has been shaped by a century of refinery, shipping, and heavy manufacturing employment. The central county — Concord, Walnut Creek, Pleasant Hill — is dense BART-corridor suburbia that functions as a bedroom community for San Francisco and Oakland professionals who want more space. The Lamorinda corridor — Lafayette, Moraga, Orinda — is one of the most affluent and educationally prestigious suburban markets in the Bay Area, with excellent schools and very low vacancy rates. And the eastern county — Antioch, Pittsburg, Brentwood — is more affordable working-class territory that has grown substantially as buyers and renters priced out of western Contra Costa have pushed eastward.

For landlords, Contra Costa County occupies a moderate position in California’s regulatory spectrum. The City of Richmond has its own rent ordinance that imposes local protections on covered properties. The rest of the county is governed by AB 1482 without significant local overlays, making it more straightforward than neighboring Alameda County with its Oakland and Berkeley ordinances. The BART network is the county’s most important rental market driver — proximity to BART stations in Walnut Creek, Concord, Pleasant Hill, and the Pittsburg/Bay Point line directly correlates with rental demand and price premiums. Understanding the BART commuter dynamic, the income profiles it produces, and the Richmond exception is the core legal and practical knowledge a Contra Costa landlord needs.

Contra Costa County — State Law & Local Highlights

Last verified: March 2026 · Source: California Civil Code §§ 1940–1954.071

California State Law Framework

⚡ Quick Overview

3

Days Notice (Nonpayment)

3

Days Notice (Violation)

45-90

Avg Total Days

$385-435

Filing Fee (Approx)

💰 Nonpayment of Rent

Notice Type 3-Day Notice to Pay Rent or Quit

Notice Period 3 days

Tenant Can Cure? Yes

Days to Hearing 20-30 days

Days to Writ 5-15 days

Total Estimated Timeline 45-90 days

Total Estimated Cost $500-$2,500+

⚠️ Watch Out

AB 1482 (Tenant Protection Act) requires just cause for evictions of tenants in place 12+ months. 3-day notice can only include rent - no late fees, utilities, or other charges. AB 2347 (eff. Jan 2025/2026) doubled tenant response time from 5 to 10 business days. Notice excludes weekends and court holidays.

📜 Eviction Laws Main 📊 Compare This State

Underground Landlord

📝 California Eviction Process (Overview)

1. Serve the required notice based on the eviction reason (nonpayment or lease violation).
2. Wait for the notice period to expire. If tenant cures the issue (where allowed), the process stops.
3. File an eviction case with the Superior Court (Unlawful Detainer). Pay the filing fee (~$385-435).
4. Tenant is served with a summons and has the opportunity to respond.
5. Attend the court hearing and present your case.
6. If you prevail, obtain a writ of possession from the court.
7. Law enforcement executes the writ and removes the tenant if necessary.

⚠️ Disclaimer: This page provides general information about California eviction laws and does not constitute legal advice. Eviction procedures can vary by county and may change over time. Local jurisdictions may have additional requirements or tenant protections. For specific legal guidance, consult a qualified California attorney or local legal aid organization.

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Underground Landlord

🔍 Reduce Your Risk Before Signing a Lease: California landlords who screen tenants carefully before signing a lease significantly reduce their risk of ending up in eviction court. Understanding tenant screening in California — including background checks, credit history, income verification, and rental references — is one of the most cost-effective steps you can take to protect your rental property. Before you ever need California's eviction process, proper tenant screening can help you identify red flags early and avoid problem tenancies altogether.

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Contra Costa County Landlord-Tenant Law: BART Corridors, Refinery Towns, and the East Bay’s Suburban Rental Market

Contra Costa County doesn’t get the attention that its neighbors across the bay attract. San Francisco generates the headlines, Oakland generates the controversy, Silicon Valley generates the mythology. But Contra Costa County quietly houses 1.2 million people across one of the most geographically and economically varied rental markets in the Bay Area, and it does so with a legal framework that is more manageable than what landlords face in Alameda or San Francisco counties. If you own rental property in Contra Costa, the most important questions are three: Is this property in Richmond? Is it within walking distance of a BART station? And does it qualify for the AB 1482 single-family exemption? The answers to those three questions determine most of what you need to know about operating legally and profitably in this market.

The legal foundation is California state law — Civil Code habitability standards, security deposit rules, entry notice requirements, anti-retaliation protections — overlaid with AB 1482’s statewide rent cap and just cause framework for eligible pre-2010 properties. The applicable CPI for Contra Costa County’s AB 1482 calculations is the BLS CPI-U for the Oakland–Hayward–Berkeley metropolitan division, the same index used for Alameda County properties. The City of Richmond’s local rent ordinance applies to covered properties in Richmond and supersedes AB 1482 for those units. Every other major city in the county — Concord, Walnut Creek, Antioch, San Ramon, Pittsburg, Brentwood, Martinez, Pleasant Hill, El Cerrito, the Lamorinda communities — has no local rent control ordinance and is governed by state law alone.

Richmond’s Rent Ordinance and the Industrial West County

Richmond is Contra Costa County’s exception to the otherwise straightforward regulatory picture. The City of Richmond enacted its Rent Ordinance to cover most rental units in buildings with three or more units constructed on or before December 31, 1994. The ordinance sets allowable annual rent increases, requires just cause for eviction of all covered tenants, and imposes relocation assistance obligations for no-fault terminations. Richmond landlords with covered units should verify their specific property’s status and the current allowable increase rate through the City of Richmond Rent Program before taking any action.

Richmond’s housing market has a character distinct from the rest of the county. The Chevron Richmond Refinery — one of the largest on the West Coast — has been the economic anchor of western Contra Costa for over a century, employing thousands of workers directly and supporting a substantial contractor ecosystem. Refinery workers and Chevron contractors earn wages that sustain above-average rental rates in a community that might otherwise be entirely working-class. The proximity to BART’s Richmond station adds another layer of demand from Bay Area commuters who prioritize access over prestige. Richmond’s tenant community has been politically organized for decades, and tenant advocacy organizations are active in monitoring landlord compliance. This is not a market where procedural shortcuts go unnoticed.

BART as a Rental Market Architecture

No discussion of Contra Costa County’s rental market makes sense without centering BART. The Bay Area Rapid Transit system is not just public transportation in Contra Costa — it is the organizing principle around which much of the county’s rental geography has developed. BART stations in Walnut Creek, Pleasant Hill, Concord, North Concord, Pittsburg/Bay Point, and along the Richmond line in the west county create measurable rent premiums that can be worth several hundred dollars per month compared to equivalent units without walkable BART access.

The economic logic is straightforward. A tenant who pays $2,400 per month for a one-bedroom apartment in Walnut Creek within walking distance of BART can commute to San Francisco in 45 minutes without a car. A comparable apartment in San Francisco would cost $3,500 or more. The math works for a wide range of Bay Area professionals who can tolerate the commute in exchange for significantly lower housing costs. This produces a tenant profile in BART-proximate Contra Costa units that skews toward employed Bay Area professionals with strong, verifiable income — exactly the screening profile landlords prefer.

The Lamorinda corridor — Lafayette, Moraga, Orinda — represents the apex of this dynamic. These three communities are served by the Orinda and Lafayette BART stations and are consistently ranked among the top school districts in California. The rental market here is dominated by single-family home rentals occupied by families who cannot afford to buy in one of the most expensive housing markets in the Bay Area but who prioritize school district access above nearly everything else. A three-bedroom home in Lafayette near the BART station commands rents that approach or exceed many urban apartments. Tenancy durations in Lamorinda are long — families who get their children established in these schools tend to stay until graduation rather than risk changing districts.

The AB 1482 single-family exemption is more important in Lamorinda than perhaps anywhere else in the county, because the rental inventory is so heavily composed of individually owned SFRs that would qualify for the exemption. A landlord renting a Lafayette home owned in their personal name, who provides the required written notice to the tenant, is exempt from AB 1482’s rent cap and just cause requirements. Without that notice, the property is treated as covered. In a market where three-bedroom rents approach $5,000 per month, the difference between being able to freely set rents at renewal and being capped by the AB 1482 formula is financially significant. The written exemption notice is not a technicality to be overlooked — it is a material financial obligation.

The eastern county presents a different picture. Antioch, Pittsburg, and Brentwood have grown significantly as more affordable alternatives to the western county, attracting buyers and renters who cannot afford the BART-corridor premiums. These communities have no local rent control and are governed by AB 1482 for eligible pre-2010 units. The tenant pool is more working-class, income is more variable, and screening for employment stability and eviction history is more consequential. Brentwood in particular has seen substantial new residential development, and much of that newer inventory falls outside AB 1482 coverage under the 15-year new construction exemption.

This page is provided for general informational purposes only and does not constitute legal advice. Contra Costa County landlord-tenant matters are governed by California Civil Code §§ 1940–1954.071, the AB 1482 Tenant Protection Act (Civil Code §§ 1946.2 and 1947.12), and the City of Richmond Rent Ordinance for properties within Richmond city limits. The applicable CPI for AB 1482 calculations is the BLS CPI-U for the Oakland–Hayward–Berkeley metropolitan division. Unlawful detainer actions are filed in Contra Costa County Superior Court (Martinez, Richmond, or Pittsburg depending on property location). Security deposit cap: 1 month’s rent (Civil Code § 1950.5; effective July 1, 2024). Deposit return: 21 calendar days. AB 1482 rent cap: 5%+CPI, max 10%; expires January 1, 2030. Richmond Rent Ordinance imposes additional requirements on covered units. Consult a licensed California attorney for specific guidance. Last updated: March 2026.