What is adverse possession in England and Wales?

Adverse possession is a legal process under the Land Registration Act 2002 by which a person who has occupied registered land for 10 continuous years without the owner's consent can apply to HM Land Registry (using Form ADV1) to become the registered owner. The registered owner receives Form NAP and has 65 working days to object. Acting before 10 years have elapsed is critical.

What is neighbour encroachment?

Neighbour encroachment (also called property encroachment or land encroachment) is when a neighbour's structure — such as a fence, shed, garden wall, driveway, or extension — crosses your registered land boundary onto your property. If left unchallenged, it can ripen into an adverse possession claim after 10 years of continuous occupation.

What is a Boundary Encroachment Notice?

A Boundary Encroachment Notice is a formal written letter asserting your registered title over land being encroached upon by a neighbour. Served by Royal Mail Special Delivery, it removes the 'without consent' element of an adverse possession claim and defeats the Third Condition reasonable-belief argument under paragraph 5(4) of Schedule 6, Land Registration Act 2002.

How do I stop a neighbour claiming my land through adverse possession?

Serve a formal Boundary Encroachment Notice on the registered owner of the neighbouring property by Royal Mail Special Delivery Guaranteed. Keep the certificate of posting and delivery confirmation permanently. This removes the 'without consent' element essential to any adverse possession claim and creates a provable legal paper trail. Act before 10 continuous years of occupation have elapsed.

How does adverse possession work for registered land?

Under the Land Registration Act 2002, a person who has occupied registered land for 10 continuous years can apply to HMLR using Form ADV1. HMLR then sends Form NAP to the registered owner, who has 65 working days to object. Acting early — before 10 years are up — is critical.

My neighbour's fence crosses my boundary — what can I do?

If fewer than 10 continuous years have passed since the fence was erected over your boundary, serving a Boundary Encroachment Notice now removes the 'without consent' element of any future adverse possession claim and creates a dated paper trail. The notice must be served on the registered owner (not just the occupier) by Royal Mail Special Delivery Guaranteed.

Adverse Possession Notice · England & Wales

Stop Neighbour Encroachment —
Before It Becomes Adverse Possession

A neighbour’s fence, garage, shed or extension crossing your boundary is property encroachment. Left unchallenged, it can become a legal adverse possession claim after 10 years under the Land Registration Act 2002. A formal Boundary Encroachment Notice — served by recorded post — puts your objection on the legal record and defeats the claim before the clock runs out.

From £11.95 — Instant PDF download

✓ England & Wales ✓ Solicitor-style document ✓ Instant PDF download ✓ No account needed ✓ Secure payment via Stripe

Step 1 Find Your Property

Enter your postcode to see your registered land boundary on the map — free. Then choose the protection you need below.

Postcode

Step 2 Generate your Boundary Encroachment Notice

Fill in your details below. Your notice will be generated instantly as a PDF after payment — delivered by email with full serving instructions.

1. Your Details (Registered Proprietor)

Your name and address will appear on the notice as the registered proprietor asserting title.

Full name *

Your property address — line 1 *

Address line 2

Town / City *

County

Postcode *

Email address *

Your download link will be sent here.

Title number (if known)

Not sure of your title number? Add the HMLR Title Plan to your order below — we’ll retrieve the official document directly from HM Land Registry, confirming your title number, showing the registered boundary layout, and providing documentary evidence of your ownership to accompany the notice.

2. The Encroachment

Describe what has been built or placed on your land. This description will appear verbatim in your notice — be specific.

Description of the encroachment *

Be specific: include what it is (shed, fence, wall, extension), where it is, and approximately how far it crosses your boundary.

Approximate date first noticed *

Can be approximate — “approximately 2021” is fine. This appears on the notice to establish the timeline.

3. Neighbour’s Address for Service

The notice will be posted to this address by Royal Mail Special Delivery. Enter the neighbour’s actual postal address. Their name is optional — if unknown, the notice will be addressed to “The Occupier”.

Neighbour’s name (optional)

Address line 1 *

Address line 2

Town / City *

County

Postcode *

4. Essential Add-ons

Strengthen your position with additional documents. These are optional — the Boundary Encroachment Notice is complete on its own.

HMLR Title Plan Coming soon £11.95

Recommended. Your official HM Land Registry Title Plan — the definitive map showing your registered title boundary. Serves two purposes: it confirms your title number if you don’t have it to hand, and it provides documentary evidence of your ownership to attach to or accompany the notice. If your neighbour disputes the boundary, the Title Plan is the legal reference document.

⚠ Not available yet — we’re finalising the HMLR integration. Check back soon.

View sample Title Plan

HMLR Title Register (of neighbouring property) Coming soon £11.95

Who do I serve the notice on? The notice must be served on the registered owner of the encroaching land — not just the occupier. The HMLR Title Register is the official Land Registry document that confirms who currently owns the neighbouring title, including their name and correspondence address. Without it, you risk serving the notice on the wrong person, which could undermine its legal effect. This is the document that identifies them.

⚠ Not available yet — we’re finalising the HMLR integration. Check back soon.

View sample Title Register

GPS Boundary Report £24.95

GPS and Easting/Northing coordinates for every corner of your INSPIRE boundary polygon. Walk your exact legal boundary on the ground and measure precisely how far the encroachment extends. Requires finding your property on the map above.

View sample report

Boundary Encroachment Notice — £11.95 Free Guide included

Total: £11.95

One-off payment • Instant PDF download • Not legal advice

View sample Boundary Report

What You Get

✓ Boundary Encroachment Notice — formal, solicitor-style letter asserting your registered title
✓ Correct legal language referencing the Land Registration Act 2002 & Schedule 6
✓ Step-by-step serving instructions included
✓ Free Adverse Possession Law Guide PDF included with every order
✓ Instant PDF download — emailed to you after payment
✓ Optional GPS Boundary Report add-on (requires map selection above)

Important Notes

⚠ Serve by Royal Mail Special Delivery Guaranteed and retain proof of delivery permanently
⚠ The notice must be sent to the registered owner of the encroaching land — check the title register if unsure
⚠ Act before 10 years of continuous occupation has elapsed — once an ADV1 is filed, legal advice from a solicitor is essential
⚠ If you have received Form NAP from HMLR, an ADV1 is already in progress — instruct a solicitor immediately
⚠ This service generates a document template — it is not legal advice

Frequently Asked Questions

Q Does the notice have legal effect?
Yes. Served by Special Delivery with proof retained, it: removes the “without consent” element of any adverse possession claim; creates a provable paper trail; and defeats the Third Condition “reasonable belief” argument under paragraph 5(4) of Schedule 6, LRA 2002.
Q My neighbour’s fence crosses my boundary — is it too late?
Not if fewer than 10 continuous years have passed. Serving now removes the “without consent” element and creates a paper trail that defeats any future ADV1 application.
Q What is the Third Condition?
Paragraph 5(4), Schedule 6, LRA 2002 allows an adverse possessor to succeed if they reasonably believed the land was theirs. A written notice destroys that argument — they have been told in writing the land is not theirs.
Q I’ve received Form NAP — what do I do?
Form NAP means an ADV1 has already been filed. You have 65 working days to lodge a counter-notice. Instruct a solicitor immediately — do not ignore it.
Q How do I serve it correctly?
Royal Mail Special Delivery Guaranteed only. Keep the Post Office receipt and the online delivery confirmation showing date and signature. Do not rely on email or hand delivery alone.
Q The fence doesn’t match the boundary on the map — which is correct?
The registered boundary on the Land Registry Title Plan is the legal boundary, not the physical fence. The GPS Boundary Report add-on gives you coordinates to measure the exact overlap.

Legal References

Relevant provisions of the Land Registration Act 2002:

Schedule 6 — Adverse possession of registered land
Sch. 6 para. 5(4) — Third Condition (reasonable belief)
s.97 — Adverse possession (main provision)
Sch. 6 para. 1 — Application to be registered after 10 years

What Each Document Does

Boundary Encroachment Notice

The single most important step you can take if a neighbour’s structure crosses your boundary. A formal, solicitor-style letter addressed to your neighbour asserting your registered title. Once served by Royal Mail Special Delivery with proof retained, it: removes the “without consent” element of any adverse possession claim; creates a dated, provable paper trail; and destroys the Third Condition “reasonable belief” argument — because the encroacher has been told in writing that the land is yours.

HMLR Title Plan

Your official HM Land Registry Title Plan — sourced directly from HMLR — showing your title number and the general extent of your registered boundary on an Ordnance Survey map base. Attach it to the Boundary Encroachment Notice to make clear exactly which registered title you are asserting. It also shows any rights of way or covenants affecting your title.

Boundary Report

GPS coordinates (and Easting/Northing) for every corner of your INSPIRE boundary polygon, plotted on a satellite map with your boundary highlighted in orange. Use it to physically walk your legal boundary, identify exactly where the encroachment crosses the line, and measure how far it extends. Knowing the precise overlap strengthens any legal correspondence or dispute.

Legal Disclaimer. The information on this page is for general informational purposes only and does not constitute legal advice. Adverse possession and boundary disputes involve complex factual and legal questions. Always consult a qualified solicitor before serving notices or taking any action that may affect a neighbour’s property. BoundaryFinder is not a law firm. The Boundary Encroachment Notice is a document template service — it is not legal advice or a substitute for specialist legal representation. BoundaryFinder accepts no liability for reliance on any information on this page.