
Owning a rental property or vacant home in California comes with plenty of responsibilities—and sometimes, unexpected challenges. One of those challenges? Squatters. This is especially pertinent if you are trying to sell a property.
Thanks to California squatters’ rights, removing someone who’s occupying property without permission isn’t always as simple as asking them to leave. If you’re a property owner, it’s important to understand what the law says, how squatters can gain rights over time, and what steps you can take to protect your property.
What Are Squatters Rights in California?
In California, squatters may be able to claim legal ownership of a property they’ve lived in without permission—under certain conditions. This is known as adverse possession, a legal doctrine that allows someone to eventually claim ownership of land they’ve occupied without the permission of the true owner.
To qualify for adverse possession under state law, a squatter must meet strict criteria over a continuous period of time—typically five years.
They must:
- Live openly and continuously on the property (no hiding)
- Pay property taxes on the property for the entire time
- Act as if they are the legal owner
- Occupy the property without the permission of the true owner
- Have what’s known as “color of title,” meaning they believe they have a legal claim to the property (even if that claim is flawed)
While these requirements are difficult to meet, it’s not impossible. That’s why dealing with squatters quickly and lawfully is essential.
The 30-Day Squatter Law: What Property Owners Need to Know
Many property owners are shocked to learn that, in California, a squatter can gain limited rights in just 30 days. This is sometimes referred to as the 30-day squatter law. If someone has been living in your property for more than 30 days—even without a lease—they may be considered a tenant under California law.
At that point, you can’t just change the locks on a squatter or kick them out. You must go through the legal eviction process, just as you would with a non-paying tenant.
Can You Call the Police on a Squatter?
If someone has lived on the property for less than 30 days and you never gave them permission to be there, law enforcement may help you evict a squatter. However, once that person establishes any sort of residency, things get trickier.
The police may tell you it’s a civil matter, not criminal trespass, especially if the squatter pays rent to someone else claiming to be the owner or has mail delivered to the address. That’s when you’ll need to file an unlawful detainer with the court.
How to Evict a Squatter in California
To legally remove a squatter, you must go through the court system by filing an unlawful detainer lawsuit. This process typically includes:
- Serving a written notice (usually a 3-day, 30-day, or 60-day notice depending on the situation)
- Filing the unlawful detainer paperwork with your local court
- Attending a court hearing
- Receiving a judgment in your favor
- Requesting a sheriff-assisted lockout if the squatter refuses to leave
It can take several weeks—or longer—to fully remove a squatter through this process, which is why prevention is so important.

Tips for Protecting Your Property from Squatters
If you own a vacant home, vacation rental, or inherited property, taking steps to secure it is essential. The longer someone stays in your property without challenge, the harder it may be to remove them.
Here are some practical ways to protect your property from squatters:
- Visit your property regularly to check for signs of trespassers
- Secure all doors and windows, and install cameras or alarms
- Post “No Trespassing” signs in visible areas
- Don’t leave utilities running if the property is unoccupied
- Keep neighbors informed if the property is vacant
If you live out of state or can’t check on your property often, hiring a property management company can give you peace of mind. They’ll help monitor, maintain, and even lease your property legally to prevent unlawful occupation.
Squatter Protection vs. Property Owner Rights
Some people believe squatters are unfairly protected under California law, but the reality is more nuanced. Squatter protection laws exist to prevent landlords from forcibly removing people without a legal process—something that could harm legitimate tenants in housing disputes.
That said, property owners also have strong legal rights. Courts generally side with true owners, but only when the legal process is followed properly.
Here’s what you should not do when dealing with squatters:
- Do not physically remove them or threaten violence
- Do not turn off utilities
- Do not harass or intimidate them
Doing so could result in a lawsuit against you. Instead, always use the lawful eviction process.
Can Squatters Really Gain Legal Ownership?
Under rare but real circumstances, yes. If a squatter meets all the requirements under California’s adverse possession laws—including paying property taxes and occupying the home for a continuous period of time—they could eventually gain legal ownership.
This is why being proactive about vacancy, maintenance, and legal action is essential. Squatters who are left alone for years might be quietly building their case.
What Property Owners Should Do Immediately
If you’ve discovered a squatter in your home, here’s a quick action plan:
Step 1: Assess the Situation
Has the person been there for more than 30 days? Do they claim to have a lease or agreement?
Step 2: Document Everything
Take photos of the property, record any communication, and gather mail or other proof of residency.
Step 3: Consult a Lawyer or Property Management Company
An expert can help you understand the best approach and avoid costly mistakes.
Step 4: Begin the Legal Process
File an unlawful detainer and start the formal eviction as soon as possible.
The Bottom Line: Stay Informed, Stay Protected
California squatters rights can be confusing, but knowledge is your best defense. If you own vacant or rental property, it’s your responsibility to keep it secure, monitor it regularly, and act quickly if someone moves in unlawfully.
While you may not be able to change the locks on a squatter without notice, you can use the legal system to remove them and prevent long-term damage to your investment.
Don’t wait for a squatter to become a problem. Protect your property, know your rights, and when in doubt—get legal advice or professional help. It’s the best way to avoid losing time, money, and control of your real estate.