Renting out a room in California

Updated August 5, 2026 · About 10 minutes · Educational information only

1. Check the rules that apply to your home

Start with the property, not the applicant. Review your mortgage or deed restrictions, homeowners association rules, insurance policy, and any local registration, licensing, rent-control, or just-cause rules.

California sets statewide minimum rules, but cities and counties can provide additional tenant protections. A rule that applies in Los Angeles, San Francisco, San Jose, Oakland, or another city may differ from the statewide baseline.

• Ask your insurer how a long-term room rental affects coverage and liability.
• Confirm that the bedroom meets local health, safety, occupancy, and egress requirements.
• Check whether your city requires registration, a business license, or specific disclosures.
• If the property is in an HOA, read the rental and occupancy restrictions.

2. Know whether the renter is actually a lodger

California Courts explains that the simplified lodger process generally applies only when all of these facts are present:

• You rent one room to one person.
• The home is your principal residence.
• You retain a right of access to every room, including the rented room.

If you rent to more than one person, do not live in the home, or do not retain access to the rented room, the person may be a tenant rather than a lodger. The label in your agreement does not override the actual arrangement.

3. Use a written room rental agreement

California can recognize oral rental agreements, but a written agreement gives both people a shared reference point. It should match how the home will really operate.

At minimum, address:

• Names, address, room, and shared areas
• Start date, fixed term or month-to-month status, and move-in date
• Rent amount, due date, payment method, late-payment terms, and utilities
• Security deposit amount and permitted uses
• Guests, overnight visitors, quiet hours, smoking, pets, parking, and storage
• Cleaning, shared supplies, kitchen and laundry use, and privacy expectations
• Entry, repairs, notices, rule changes, and how the agreement ends

Keep house rules specific and behavior-based. Give the applicant time to read both documents before money changes hands.

4. Handle the security deposit carefully

California Civil Code section 1950.5 generally limits a residential security deposit to one month’s rent in addition to first month’s rent. A qualifying small landlord who is a natural person, or an eligible LLC made only of natural persons, may be able to collect up to two months’ rent if the ownership limits and other conditions in the statute are met. That small-landlord exception does not apply when the prospective tenant is a service member.

Security cannot be labeled nonrefundable. After the renter leaves, the landlord generally has 21 calendar days to return the remaining deposit and provide an itemized statement of lawful deductions. California also requires photographs in connection with certain deposit deductions, including move-out photos before and after claimed repairs or cleaning under rules effective in 2025.

• Give a receipt and record the amount received.
• Document the room and shared areas at move-in with dated photos and a checklist.
• Offer the required pre-move-out inspection when applicable.
• Keep invoices, receipts, photos, and the itemized disposition together.

5. Screen consistently and respect fair housing rules

California’s fair housing protections are broader than the federal baseline. Use written, neutral criteria connected to the rental: ability to pay, rental history, references, lawful screening information, and compatibility with stated house rules.

Ask every applicant the same core questions. Avoid questions about protected characteristics, disability or medical details, religion, family plans, sexual orientation, gender identity, immigration or citizenship status, or the specific source of lawful income.

If you use a consumer report, obtain appropriate permission, protect the information, and follow adverse-action requirements if the report influences an unfavorable decision.

For the conversation itself, use the 25 roommate questions, then follow the documented steps in the screening guide.

6. Understand statewide rent and termination rules

California’s Tenant Protection Act limits rent increases and requires just cause for many covered tenancies. Civil Code section 1946.2 lists exemptions that can include housing where a tenant shares a bathroom or kitchen with an owner who lives at the property, and certain owner-occupied homes where no more than two units or bedrooms are rented.

An exemption from one statewide provision does not erase the rest of landlord-tenant law. Local rent control or just-cause rules may be more protective, and some exemptions require precise written notices.

7. Ending a lodger arrangement is different

For a person who truly meets California’s lodger definition, California Courts says the homeowner generally gives written notice equal to the rental payment period, with at least seven days’ notice. If the lodger stays after the notice expires, the law may treat the person as a trespasser.

California Courts also warns that not every police or sheriff’s department will remove a lodger without an eviction case. For a tenant who is not a qualifying lodger, different notice and court procedures apply. Never change locks, remove belongings, shut off utilities, or use force as a shortcut.

A calmer California room-rental checklist

1. Confirm local, HOA, mortgage, insurance, and safety requirements.
2. Decide whether the arrangement is likely a lodger or tenant relationship.
3. Set neutral written screening criteria and house rules.
4. Use a written agreement matched to the property and local law.
5. Document the condition of the room and all money collected.
6. Keep applications, reports, notices, receipts, and communications secure.
7. Get local advice before relying on an exemption or ending the arrangement.

This guide provides general educational information, not legal advice. California housing rules change, local ordinances can add protections, and small factual differences can change whether someone is a lodger or tenant. Confirm the current rules for your property with the appropriate local agency or a qualified California attorney.