California Squatters Rights: Adverse Possession and How Removal Actually Works
How long adverse possession takes in California, whether there is a fast-track removal law, and what you legally can and cannot do about an unauthorized occupant. Last reviewed August 2026.
The question that decides everything: is the occupant a squatter or a tenant? Anyone who ever had permission to be there — a former tenant, someone who paid you rent even once, an ex-partner of your tenant on the lease — is generally a tenant in the law's eyes and must go through the eviction process. California's squatter rules below apply to true trespassers only.
How long does adverse possession take in California?
California's period is short on paper — five years — but the statute is brutal in practice. Under Code of Civil Procedure §§ 318-325 the claimant must hold and occupy the land continuously for five years, hostilely and under a claim of title or color of title, with occupation that is open and notorious (protected by a substantial enclosure or usually cultivated or improved when the claim is not founded on a written instrument). Section 325(b) then requires timely payment of all state, county, and municipal taxes levied on the parcel for those five years, proven by certified county tax-collector records. Because the assessed owner is almost always paying the taxes on a house, residential squatter claims essentially never ripen; Civil Code § 1007 states the resulting title rule.
How to remove a squatter in California
California enacted no expedited squatter-removal statute in the 2024-26 wave. For a caught-in-the-act break-in, police can act under Penal Code § 602.5 (unauthorized entry of a dwelling) or trespass under § 602 — and SB 602 (2023, effective January 1, 2024) made this more workable for vacant property by extending trespass-authorization '602(o) letters' from 30 days to 12 months (three years for property posted as permanently closed), letting officers arrest without the owner present. Once an occupant claims residency or produces any purported lease, police almost always call it civil, and the owner must sue: forcible entry/forcible detainer or unlawful detainer under CCP §§ 1159-1161, served, contested (tenants and claimed tenants get 10 court days to respond since AB 2347), and enforced only by the sheriff on a writ of possession. Budget weeks to months.
Squatter or tenant? Why it matters
Anyone the owner (or a tenant) ever let in — a guest who overstayed, a subtenant, anyone whose rent was accepted — must go through unlawful detainer with proper notice; the expedited trespass tools are only for occupants who never had permission. The narrow exception is a single lodger in an owner-occupied home: under Civil Code § 1946.5 and Penal Code § 602.3, once the lodger's notice period expires the owner may treat them as a trespasser and police may remove them. Mere length of occupancy does not create a tenancy, but it does make police treat the dispute as civil.
What you absolutely cannot do
Civil Code § 789.3 prohibits lockouts, utility shutoffs, and removing doors, windows, or belongings to force out an occupant, at actual damages plus up to $100 per day (minimum $250 per violation) and attorney fees; Civil Code § 1940.2 adds up to $2,000 per violation for threats or menace used to make someone vacate. Courts apply these to claimed tenancies even when the owner insists the occupant is a squatter — the sheriff with a writ is the only safe endpoint.
Recent changes to the law
No statewide expedited squatter-removal law passed in 2024-2026. The practical changes: SB 602 (effective January 1, 2024) extended trespass-authorization letters under Penal Code § 602(o) from 30 days to 12 months, so owners of vacant property can pre-authorize police arrests for a full year; and AB 2347 (effective January 1, 2025) doubled the unlawful detainer response window to 10 court days, lengthening the court route that squatter cases usually end up on once an occupant claims tenancy.
What California property owners get wrong
The '30 days makes them a tenant' rule owners cite does not exist in the statutes — but functionally, any occupant established enough to claim residency forces you into court, so speed of response is everything: act while the entry is fresh and police will still treat it as trespass. Keep vacant units posted and file a 602(o) letter with the local police or sheriff — it now lasts 12 months and lets officers arrest trespassers without calling you first. And do not fear adverse possession: the five-year tax-payment requirement, proven by certified tax records, kills virtually every residential squatter claim. The real danger is self-help — a wrongful lockout of someone a judge later deems a tenant costs daily penalties plus fees.
The law itself
Frequently asked questions
How long does a squatter have to stay in California to claim ownership?
Five years of continuous, hostile, open occupation — plus timely payment of every property tax bill on the parcel for those five years, proven by certified county tax records (CCP § 325). Since the record owner of a home is nearly always the one paying the taxes, residential squatters essentially never acquire title in California. The five-year clock also restarts any time the owner interrupts the possession.
How do I remove a squatter in California?
Call police immediately if the entry is recent — Penal Code § 602.5 covers unauthorized entry into a dwelling, and a 602(o) authorization letter on file lets officers arrest trespassers on vacant property without you present. If the occupant claims residency or waves a fake lease, you will need a court order: a forcible detainer or unlawful detainer under CCP §§ 1159-1161, judgment, and a sheriff-executed writ of possession. Never change the locks yourself; Civil Code § 789.3 penalties apply even when you are right about the merits.
Do squatters really become tenants after 30 days in California?
No statute says that. What is true: once someone is established in the property and claims to live there, police will not remove them, and you must win an unlawful detainer or forcible detainer case to get a sheriff lockout — the same court process a tenant would get. The exception is a single lodger renting a room in the home you live in, whom police can remove as a trespasser after their notice expires (Civil Code § 1946.5, Penal Code § 602.3).
What is a 602 letter and should California landlords file one?
A trespass-authorization letter under Penal Code § 602(o) tells your local police or sheriff, in advance, that no one has permission to be on your vacant property and authorizes officers to arrest trespassers without contacting you first. Since SB 602 took effect in January 2024 it remains valid for 12 months (three years if the property is posted as permanently closed) instead of 30 days. For any vacant unit, between-tenants house, or property under renovation, it is the cheapest squatter prevention available.
Keep reading
Vacant units attract squatters. Documented ones repel them.
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Start Free TrialThis page is general information, not legal advice. Squatter, trespass, and adverse possession law turns on specific facts — verify against the official statute text linked above, and talk to a local attorney or law enforcement before acting.