An adverse possession claim is a legal mechanism that allows someone who has occupied land or property without the legal owner’s permission to apply to become the registered proprietor after a certain period of continuous and exclusive possession.

In the UK, this legal doctrine exists to prevent land from remaining unclaimed or abandoned for too long, and to ensure that property rights are tied to active, visible control. It is not a backdoor for trespassers, but a process governed by strict statutory and case law conditions.

Understanding the Legal Foundation

The legal framework for adverse possession in England and Wales primarily stems from:

• The Limitation Act 1980 
• The Land Registration Act 2002 
• Various key judgments in UK case law (e.g., Buckinghamshire CC v Moran [1990], JA Pye (Oxford) Ltd v Graham [2002]) 

These laws determine when and how a person in possession of land without legal title may apply for ownership, and under what conditions their claim may succeed.

Why It Matters

An adverse possession claim can result in the original landowner losing legal title—even if they bought the property or hold it through inheritance—if they fail to take timely action against unauthorised use. It affects property developers, private landowners, local authorities, and even adjoining neighbours.

Common Real-World Scenarios

• A neighbour fences in and uses a strip of adjoining land for decades. 
• A squatter lives in and maintains a property for over 10 years. 
• A business uses a car park on private land without knowing it isn’t theirs. 

These cases often give rise to contentious legal battles over who holds true legal ownership.

Legal Requirements for a Valid Adverse Possession Claim in the UK

To succeed in an adverse possession claim, the applicant must satisfy a set of strict legal requirements. These criteria are designed to distinguish genuine possessors from opportunists and to ensure fairness in any transfer of legal ownership.

The requirements differ slightly depending on whether the land is registered or unregistered, and whether the claim is made before or after 13 October 2003 — the date the Land Registration Act 2002 came into force.

Let’s examine the key elements.

1. Factual Possession

The applicant must demonstrate exclusive physical control of the land. This means they have treated the land as their own, excluding all others, including the legal owner.

Indicators of factual possession include:

• Erecting fences or gates 
• Maintaining or cultivating the land 
• Building on the property 
• Preventing others from using the space 

Courts look for intentional control rather than accidental use.

2. Intention to Possess (Animus Possidendi)

The claimant must also show an intention to possess the land — not just to occupy it. They must behave in a way that makes it clear to the world they consider the land theirs.

This can be shown by:

• Putting up signage (e.g., “private property”) 
• Denying access to third parties 
• Making permanent alterations to the land 
• Using the land for a personal or commercial purpose 

Intent is judged by conduct, not secret thoughts. The law asks: Would a reasonable observer believe this person is acting as the owner?

3. Possession Must Be Adverse

The possession must occur without the legal owner’s consent. If the occupier has a licence, lease, or any form of permission, they cannot make an adverse possession claim.

It must be:

• Hostile to the owner’s interests (though not aggressive in nature) 
• Not based on any contractual or formal agreement 

4. Possession Must Be Continuous for the Statutory Period

The occupier must show uninterrupted possession for a minimum of:

• 12 years for unregistered land (under the Limitation Act 1980) 
• 10 years for registered land (under the Land Registration Act 2002) 

Any break in control — for example, if the legal owner reasserts rights — can reset the clock.

5. Possession Must Be Open and Not Secretive

Secret occupation does not qualify. The use of the land must be:

• Visible 
• Not hidden or covert 
• Apparent to neighbours or the legal owner 

This aligns with the idea that the true owner has a fair opportunity to object or take legal action during the possession period.

Key Differences Between Registered and Unregistered Land Claims

Whether the land is registered or unregistered makes a significant difference in how an adverse possession claim is handled in the UK. The Land Registration Act 2002 fundamentally changed the rules, especially for registered land.

Let’s break down how the process and outcomes differ.

Adverse Possession of Unregistered Land

If the land is unregistered, the claim is governed primarily by the Limitation Act 1980. The rules here are more straightforward — and arguably more favourable to the adverse possessor.

Key Features:

• 12-year possession rule applies. 
• Once the 12 years pass, the original owner’s title is automatically extinguished. 
• The adverse possessor becomes the new legal owner, regardless of whether they register the land or not. 
• There’s no need to notify the original owner — loss of title is automatic after the limitation period. 

This reflects the historic principle that owners who “sleep on their rights” risk losing their land.

Adverse Possession of Registered Land

For registered land, the situation is very different and significantly more complex due to the Land Registration Act 2002.

Key Features:

• The adverse possessor can apply to HM Land Registry after 10 years of continuous, exclusive, and adverse possession. 
• However, once the application is made, the registered owner is notified and has 65 business days to object. 
• If the registered owner objects and takes action, the application will likely be rejected — unless one of three exceptions applies (see below). 
• Legal ownership is not extinguished automatically. The Land Registry must approve the claim for title to transfer. 

This framework shifts the balance in favour of the legal owner and discourages opportunistic land grabs.

The Three Exceptions (for Registered Land)

Even if the legal owner objects, the Land Registry may still grant the claim in the following cases:

1. Estoppel – If the adverse possessor reasonably believed they owned the land and the owner contributed to this belief. 
2. Some Other Entitlement – If the adverse possessor has some other legal right to the land (e.g., entitlement under a trust). 
3. Boundary Disputes – If the land in question is a small area next to the applicant’s land and they had a reasonable mistake about the boundary line for at least 10 years. 

These exceptions are narrowly interpreted and place the burden on the claimant to prove their case.

The Adverse Possession Claim Process with HM Land Registry

For claims involving registered land, the process of applying to HM Land Registry is highly structured. The applicant must provide robust evidence of possession and follow strict procedural steps. Below is a comprehensive overview of the process.

Step 1: Assess Eligibility

Before making a claim, the applicant should:

• Ensure they have had at least 10 years of continuous factual and exclusive possession. 
• Review whether their possession meets the legal tests (factual possession + intention + adverse nature). 
• Identify the registered title number and the name of the legal owner from the Land Registry. 

If in doubt, legal advice from a solicitor is highly recommended.

Step 2: Complete Form ADV1

To formally begin an adverse possession claim, the applicant must submit Form ADV1 to HM Land Registry.

Key information required:

• Details of the applicant 
• Description and location of the land 
• Dates and nature of occupation 
• Evidence of factual possession and intention to possess 

Supporting documentation may include:

• Statutory declarations or sworn statements 
• Photos showing physical control 
• Maps or diagrams 
• Evidence of maintenance, fencing, signage, etc. 

Step 3: Notification to the Registered Owner

Once the claim is submitted, HM Land Registry:

• Notifies the registered proprietor and any parties with an interest in the land (e.g., mortgage lenders, tenants, etc.). 
• Allows 65 business days for objections. 

This is the most critical phase. If the legal owner objects and takes legal steps to regain control (e.g., by issuing possession proceedings), the claim will usually fail unless one of the legal exceptions applies.

Step 4: Handling Objections

If the registered owner objects, then following things can happen:

• Dispute resolution by agreement or settlement 
• Proceed to the Land Registration Division of the First-tier Tribunal (Property Chamber) 

The tribunal will consider:

• The factual history of possession 
• The strength of the evidence 
• Whether any exceptions to rejection apply 

This is where legal representation becomes crucial. A well-prepared case can make or break the application.

Step 5: Registration of Title

If the claim is approved:

• The applicant is registered as the new legal proprietor of the land. 
• A possessory title is typically granted initially, which can be upgraded to absolute title after 12 years of unchallenged ownership. 

It’s worth noting that a possessory title carries some risk of third-party claims, whereas absolute title provides stronger protection.

Legal Challenges and Common Defences Against Adverse Possession Claims

While an adverse possession claim can lead to a transfer of land ownership, property owners are not without recourse. In many cases, the legal owner may successfully challenge or defeat such claims by raising appropriate defences or taking timely action.

Understanding the most common legal countermeasures is essential — whether you’re defending your property or disputing someone else’s claim.

1. Demonstrating Lack of Exclusive Possession

If the occupier shared use of the land with others — especially the legal owner — this undermines the claim of exclusive possession. Examples include:

• Occasional use by the legal owner (e.g., cutting grass, inspecting boundaries) 
• Allowing others unrestricted access to the land 
• Joint occupation (e.g., community space or shared garden) 

Courts require exclusive, uninterrupted control. Any evidence to the contrary may invalidate the claim.

2. Showing the Possession Was with Consent

One of the strongest defences is showing that the occupation was authorised or licensed — even informally.

For instance:

• A letter or email granting permission 
• A verbal agreement later confirmed in writing 
• An expired tenancy or lease that was never formally terminated 

Consent — even implied — is fatal to an adverse possession claim, because the possession is no longer “adverse.”

3. Interrupting the Statutory Period

If the legal owner took action to regain possession during the 10- or 12-year window, it can restart the limitation clock.

Such actions include:

• Entering the land and asserting rights 
• Sending a legal notice 
• Locking gates or removing the possessor’s property 

A well-timed act of control — even if minor — may be enough to break the period of continuous possession.

4. Disputing the Evidence

Adverse possession claims often hinge on documentary and photographic evidence. A strong defence may focus on:

• Challenging the credibility of statutory declarations 
• Providing contradictory witness statements 
• Questioning the reliability of maps, photos, or timestamps 

This is especially effective when claimants exaggerate or fabricate possession timelines.

5. Boundary Disputes and Surveys

If the claim involves a disputed boundary, professional land surveys and title plans can be used to:

• Clarify ownership lines 
• Show where possession has (or hasn’t) occurred 
• Undermine a claimant’s case based on mistaken boundaries 

Legal owners should act quickly and decisively once an adverse possession claim is filed. A delayed response or failure to object may lead to irreversible loss of title.

Frequently Asked Questions 

1. What exactly is an adverse possession claim?

An adverse possession claim is a legal application by someone who has occupied land without the owner’s permission for a required number of years and now seeks to become the legal owner. The claim relies on showing factual possession, intention to possess, and that the occupation was adverse to the legal owner’s rights.

2. How many years are needed for an adverse possession claim?

The required time depends on whether the land is registered or unregistered:

• Unregistered land: 12 years of continuous adverse possession 
• Registered land: 10 years, followed by a formal application to HM Land Registry 

The time must be uninterrupted and without consent throughout the period.

3. Can a squatter make an adverse possession claim?

Yes. A squatter can make an adverse possession claim if they’ve occupied the property for the necessary period, excluded others (including the rightful owner), and acted as if they were the owner. However, the Land Registration Act 2002 makes it significantly harder for squatters to gain title over registered land.

4. Does fencing off land support an adverse possession claim?

Absolutely. Fencing is one of the strongest indicators of factual possession in an adverse possession claim. It shows physical control, exclusion of others, and an intention to possess — all of which support a claimant’s legal position.

5. Can I stop an adverse possession claim if I’m the legal owner?

Yes, and you must act promptly. If someone applies for an adverse possession claim on registered land, HM Land Registry will notify you. You’ll have 65 business days to:

• Object to the claim 
• Reassert your rights by removing the claimant or initiating legal proceedings 

Failing to act in time can result in permanent loss of title.

6. What is the difference between possessory title and absolute title?

When an adverse possession claim succeeds, the applicant is usually granted possessory title. This acknowledges their control but offers less protection than absolute title. After 12 years of undisputed ownership, the possessor can apply to upgrade to absolute title, which offers full legal rights.

7. Can co-owners of land make an adverse possession claim against each other?

Generally, no. Adverse possession claims require that the possession be against the interests of the legal owner. If you’re a co-owner, your interest is already recognised, and adverse possession does not typically apply unless specific legal arrangements break down and one co-owner excludes the other entirely for a sustained period.

8. Is adverse possession illegal or considered theft?

No, an adverse possession claim is not illegal. While it might seem morally questionable, the law recognises that land left unused or abandoned for long periods can justifiably change hands. It’s a recognised legal doctrine grounded in property law principles.

9. Does adverse possession apply to public land or council-owned land?

It’s possible, but extremely rare and difficult. Most public or local authority-owned land is actively managed. If a person attempts an adverse possession claim on such land, the council is likely to object and take legal steps to prevent the claim from succeeding.

10. Can an adverse possession claim be made for part of a property or boundary land?

Yes, and this is very common. Many adverse possession claims involve narrow strips of land along a boundary — such as gardens, driveways, or access paths — especially where fences or hedges were mistakenly placed over the legal boundary.

11. Can tenants or licensees make an adverse possession claim?

No. If someone occupies land with permission — such as a tenant or licensee — their occupation is not adverse. An adverse possession claim must be made by someone in unauthorised possession, without any legal agreement.

12. What happens if the adverse possession claim is rejected?

If an adverse possession claim is rejected, the legal owner retains full title, and the claimant may be required to vacate the land. If they remain on the property, the legal owner can take court action to recover possession or seek an injunction.

13. How much does it cost to make an adverse possession claim?

There are fees associated with the application (typically modest, e.g. around £130 for HM Land Registry filings), but legal fees can be significantly higher if objections arise. It’s highly recommended to work with a solicitor to prepare a robust adverse possession claim.

14. Can I still apply if I’m unsure who owns the land?

Yes. You can submit an adverse possession claim even if the ownership of the land is unclear. However, you’ll need to prove that you’ve met the legal criteria, and HM Land Registry will conduct research to notify any registered owners.

Need Legal Advice on an Adverse Possession Claim?

Whether you’re looking to make an adverse possession claim or defend your property rights against one, the legal landscape is complex — and mistakes can be costly.

At Axis Solicitors, our experienced property law team offers:

• Clear legal guidance on your eligibility to file an adverse possession claim
• Support with gathering evidence and completing HM Land Registry forms
• Strategic defence against disputed or unlawful possession claims
• Expert representation in boundary disputes and title challenges

We work with homeowners, landowners, developers, and local authorities across the UK.

Don’t leave your land unprotected. Contact Axis Solicitors today

You can also check our recent blog on Tenants’ rights after 5 years UK