Roommate Rights in California

•Joint Liability

Are You Liable for Your Roommate's Rent?

In California, tenants named on a joint lease are usually each liable for the full rent, meaning a landlord can often collect the entire amount from a single roommate. That usually comes from the lease's own terms, and a private roommate agreement does not change what the landlord can collect.

Joint and several liability means the landlord does not care about your internal rent-splitting arrangement. If your roommate vanishes, you owe the full amount. This is the single most important thing to understand before sharing a lease. You can protect yourself with a written roommate agreement that spells out what happens if someone can't pay or wants to leave early.

•Subletting

Can You Sublet Your Room?

In California, whether a roommate can sublet or assign a room to someone new depends first on what the lease says about it. The state rule to read alongside the lease is Cal. Civ. Code § 1995.010. Subletting against the lease's terms can put every tenant's lease at risk.

Even if your state allows subletting, your lease may prohibit it. Read the subletting clause in your lease before making plans. If the lease is silent, check your state's default rules. When in doubt, get written permission from your landlord — verbal agreements are hard to enforce.

•Adding a Roommate

How to Add Someone to Your Lease

Landlords in California usually want to know about a new roommate before that person moves in and starts paying rent. Requires landlord approval. Landlords may run credit/background checks on the new occupant and charge a reasonable screening fee. The new roommate becomes jointly liable for rent once added to the lease.

Never let someone move in without telling your landlord. Unauthorized occupants can be grounds for eviction in most states. Get the new person on the lease so everyone's rights and responsibilities are clear. The landlord may want to run a credit check — that's standard.

•Removing a Roommate

What Happens When a Roommate Wants to Leave

In California, the law does not automatically release a departing roommate from a joint lease just because they move out. Requires a lease amendment signed by the landlord. The departing tenant remains jointly liable unless the landlord provides a written release.

The biggest mistake: assuming that moving out ends your lease obligations. In California, a departing roommate typically stays liable for rent through the end of the lease unless the landlord signs a written release. Get everything in writing. If you are the one leaving, push for a formal lease amendment that releases you from further liability.

•Security Deposits

How Security Deposits Work with Roommates

In California, the landlord holds one security deposit for the unit and must return it within 21 days of move-out under Cal. Civ. Code § 1950.5, or risk up to 3x the wrongfully withheld amount. Dividing that refund among roommates afterward is a private arrangement the landlord does not manage.

The landlord writes one check at the end of the lease — they do not split refunds among roommates. If one roommate caused damage, the landlord can still deduct from the full deposit. That means the roommate who did not cause the damage may lose their share. A roommate agreement can specify that the person who caused the damage is responsible for reimbursing the others.

Splitting a deposit refund — or the cost of damage one roommate caused — among several roommates? The roommate debt calculator has a section that walks through dividing it fairly.

•Key Facts

Key Facts About Roommate Law in California

• California's reasonable-consent sublease statute applies to commercial leases, not apartments.
• For a residential sublease, read the lease's subletting clause before you ask the landlord.
• Most California leases make every co-tenant liable for the full rent.
• A departing roommate usually stays liable on the lease until the landlord signs a written release.

Source: Cal. Civ. Code § 1995.010

•Roommate Agreements

What to Put in a Roommate Agreement

Your lease covers the relationship between tenants and the landlord. A roommate agreement covers the relationship between you and your roommates. It is a separate, private contract that is enforceable in court. Every shared living arrangement should have one.

• Rent split: Who pays what percentage, and when it is due
• Deposit ownership: Who paid what portion of the deposit and how refunds are split
• Utilities: How bills are divided and who is responsible for setting up accounts
• Shared spaces: Rules for common areas, cleaning schedules, guest policies
• Early departure: What happens if someone wants to leave before the lease ends — notice period, responsibility for finding a replacement
• Damage responsibility: Who pays if one roommate causes damage to the unit
• Quiet hours and noise: Basic ground rules so everyone can coexist
• Dispute resolution: How disagreements will be handled before they escalate

•Resources

Where to Get Help in California

• Legal Aid: Free civil legal help for low-income tenants. Search “legal aid California” or visit lawhelp.org.
• HUD Housing Counseling: Free help with landlord disputes. Call 1-800-569-4287.
• Small claims court: If a former roommate owes you money or your landlord wrongfully withheld the deposit, small claims is the fastest path. Filing fees run $30–$100, no lawyer needed.
• Tenant rights organizations: Search “tenant rights California” for local nonprofits that help with roommate and landlord disputes.

More California Guides

●Frequently Asked Questions

Frequently Asked Questions