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Everything You Need to Know About Adverse Possession in California

April 11, 2025 by Mark Mellor

Adverse possession is a legal concept that might sound surprising—it allows someone to claim ownership of property they don’t legally own, as long as specific conditions are met. While this might bring to mind images of opportunists taking over abandoned properties, adverse possession has a deeper purpose within property law. It encourages the productive use of land and discourages neglect.

This guide will cover the ins and outs of adverse possession as it applies to California, from the legal steps involved to key requirements, common misconceptions, and actionable advice from law experts.

What Is Adverse Possession and How Does It Work?

Adverse possession is a legal doctrine that allows an individual to claim ownership of land or property under specific circumstances. To make it clearer, imagine a scenario:

Your neighbor uses a strip of your backyard to build a garden and continuously works it for years without your objection. Over time, if they meet the legal requirements, they might have grounds to claim ownership of that strip through adverse possession.

The doctrine exists to promote responsible land stewardship and ensure properties aren’t left unused or abandoned. It’s not as simple as claiming someone else’s property; specific conditions must be met, and the process involves legal challenges.

The step-by-step process for adverse possession in California generally includes:

  1. Meeting Legal Requirements (discussed below).
  2. Maintaining Continuous Possession for the Required Period (5 years in California).
  3. Paying Property Taxes on the land during this time.
  4. Filing a Legal Claim to acquire the official title.

What Are the Requirements for Adverse Possession in California?

California law outlines five main requirements for a successful claim. Each must be satisfied, and any missing condition can invalidate the claim.

1. Actual Possession

The individual claiming adverse possession must physically use or occupy the property. Examples include building a structure, farming the land, or fencing it off.

2. Open and Notorious Use

The use of the property must be visible and obvious—not hidden or concealed. The rightful owner should reasonably be able to notice it. For example, setting up a visible fence would meet this condition.

3. Hostile Claim

“Hostile” doesn’t mean aggressive—it means that the claimant is using the property without the owner’s consent. If the rightful owner gave permission for the property to be used, it cannot be claimed through adverse possession in California.

4. Exclusive Possession

The property cannot be shared with the public or other individuals; the claimant must be the one exclusively using and benefiting from it.

5. Continuous Possession

The claimant must maintain uninterrupted possession of the land for five consecutive years. If the land is abandoned or the usage is interrupted during this time, the claim may fail.

A Real-World Example:

A neighbor builds a garden shed that partially encroaches on an adjacent, unused section of your property. Over five years, they maintain the area, pay property taxes, and never receive objections from you. This case could meet the core requirements of adverse possession in California.

How Does the Burden of Proof Work in Adverse Possession Cases?

The person claiming adverse possession in California carries the burden of proof. This means they must clearly demonstrate that all legal conditions have been met. Evidence often includes:

  • Usage records (photos showing occupation over time).
  • Maintenance receipts demonstrating property care.
  • Testimony from witnesses who can verify continuous possession.
  • Proof of property tax payments during the five-year period.

Courts assess cases carefully and expect strong evidence, making successful claims relatively rare.

How Long Does It Take to Gain Adverse Possession in California?

California’s timeframe for adverse possession is five continuous years. This doesn’t just mean occasional use—it must be continuous and uninterrupted. Any legal challenges from the rightful owner, such as eviction attempts, could disrupt the timeline and invalidate the claim.

An additional requirement in California is the payment of property taxes on the land throughout these five years. Failing to pay taxes, or irregular payments, typically disqualifies a claim.

Comparison to Other States:

Adverse possession laws vary by state. For instance, Texas requires ten years of continuous possession, while New York reduces that period to just ten years with improvements. California’s five-year rule strikes a middle ground.

How to Protect Your Property and Stop an Adverse Possession Claim

If you’re a property owner, preventing claims begins with vigilance. Here are practical steps to safeguard your property:

1. Watch for Warning Signs

Be alert to signs that someone might be encroaching on your land, such as:

  • Erecting fences or borders.
  • Building temporary or permanent structures.
  • Using the land for farming, storage, or similar purposes.

2. Take Action Early

  • Document the Situation: Take date-stamped photos of the encroachment and maintain timelines.
  • Serve Formal Notice: Politely but firmly notify the individual that they’re using your property without permission.
  • Seek Legal Advice: If the trespasser persists, consult an attorney to discuss further actions.

3. Prevention Tips

  • Mark your property boundaries with clear fencing or signage.
  • Regularly inspect vacant or unused portions of your land.
  • Address encroachments immediately to avoid prolonged issues.

Common Misconceptions About Adverse Possession

Here are some common myths debunked:

  • “Anyone can just take your land.” Not true. Adverse possession requires meeting strict legal criteria.
  • “If someone trespasses, they can claim ownership.” Trespassing alone doesn’t qualify—prolonged, obvious, and exclusive use is required.
  • “Friends or family can easily take your property.” Close relationships complicate claims, as courts may assume the use was permitted.

What to Do If You’re Considering an Adverse Possession Claim

For individuals considering pursuing ownership through adverse possession in California, preparation is key. It’s a lengthy and evidence-heavy legal process, and consulting a real estate attorney early is essential.

Checklist for Claimants:

  • Are you actively and visibly using the property?
  • Is your possession exclusive and without the owner’s permission?
  • Have you paid property taxes for at least five years?
  • Are you maintaining clear records to support your case?

If you answered “yes” to all the above, your claim may have merit.

Adverse Possession Case Examples in California

1. Walters v. Smith (California Appeals Court, 2018)

A claimant provided strong evidence of continuous occupation and tax payments, leading to a successful ownership transfer.

2. Brown v. Green, 2017

A case was dismissed due to the claimant failing to demonstrate consistent property tax payment, despite evidence of property maintenance.

These cases highlight the importance of meeting every legal requirement.

The Value of Consulting a Real Estate Lawyer

Navigating property laws can be complex, but you don’t have to do it alone. With clear action steps, sound advice, and legal support from The Mellow Law Firm, you can protect or pursue your interests effectively.

Schedule a call with us today to explore adverse possession in California.

Filed Under: Personal Property Law News Tagged With: adverse possession, personal property, squatter rights

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