Property Encroachment Disputes UK: Your Rights & Options

At a glance

• Your title plan shows a "general boundary" only. Under section 60 of the Land Registration Act 2002, a registered title plan does not fix the exact legal line — HM Land Registry confirms there is no standard tolerance between the plan and the true boundary.
• An exact line can be fixed. Neighbours can apply for a "determined boundary" under section 60, or record a boundary agreement — both almost always need the adjoining owner's cooperation or strong supporting evidence.
• Adverse possession of registered land runs on a 10-year notice-based procedure, not a straightforward time limit — Schedule 6 of the Land Registration Act 2002. The registered owner is notified and can object; if they do, the applicant only succeeds under one of three narrow conditions in paragraph 5, including a genuine, long-held mistaken belief about where the boundary lay.
• Registered land cannot simply be "timed out." Section 96 of the Land Registration Act 2002 disapplies the ordinary 12-year limitation period for registered titles — Schedule 6's procedure is the only route.
• Unregistered land still runs on the older 12-year rule under section 15 of the Limitation Act 1980, after which the paper owner's title is extinguished under section 17.
• A trespass claim itself has a 6-year limitation period under section 2 of the Limitation Act 1980 — separate from, and shorter than, the rules on losing title to the land itself.
• The Party Wall etc. Act 1996 does not resolve boundary disputes, and it doesn't automatically apply to an ordinary garden fence either. GOV.UK's own guidance confirms a party wall surveyor's award cannot decide where a boundary lies, and section 20 limits a "party fence wall" to a masonry structure — timber fences fall outside the notice regime.
• You can cut back overhanging branches and roots to the boundary line under common law, but you can't enter your neighbour's land, and the material you cut generally remains theirs.
• The "high hedges" complaint process is about height, not roots. Sections 65 and 66 of the Anti-social Behaviour Act 2003 cover a tall evergreen hedge blocking light or access — root problems such as subsidence or blocked drains have to be dealt with separately.

What counts as encroachment?

Encroachment is the term used when someone's structure, planting, or activity intrudes onto land they don't own. It can be deliberate, but far more often it happens by accident or through years of gradual drift — a fence rebuilt slightly off-line, a hedge left to thicken, an extension put up without a proper boundary check, or roots from a tree spreading under a neighbouring patio or driveway.

The intrusion doesn't have to be dramatic to matter. Even a small encroachment can affect a property's value, interfere with its enjoyment, or, if left unaddressed for long enough, feed into an adverse possession claim. In England and Wales, the starting point for any encroachment question is always the same: where does the legal boundary actually run? That question is usually harder to answer precisely than people expect.

How your legal boundary is actually identified

Most registered titles in England and Wales show only a "general boundary." Under section 60 of the Land Registration Act 2002, this means the line on your title plan indicates the approximate position of the boundary, not its exact legal position. HM Land Registry's own practice guidance is explicit that there is "no standard tolerance, measurement or ratio" that can be attributed to the relationship between the line on the plan and the true legal boundary.

To work out where the exact line falls, you typically need to look beyond the title plan to:

• the original conveyance or transfer deed and its plan,
• historic deeds referring to the boundary (including any "T marks" showing ownership or maintenance responsibility),
• physical features on the ground at the time of the relevant transfer, and
• legal presumptions that can apply to particular features (for example, a hedge-and-ditch boundary is presumed to run along the far edge of the ditch from the hedge).

Where there's a genuine and persistent disagreement, two formal routes exist. A boundary agreement — a written agreement between neighbours recording where they agree the legal boundary sits — can be recorded against both titles, though it does not itself amount to a determined boundary. A determined boundary application under section 60 goes further: if HM Land Registry is satisfied the evidence identifies the exact line, it will mark the boundary as "determined" on the register, and legal presumptions can no longer be argued against it. Both routes almost always require either the adjoining owner's agreement or evidence strong enough to survive an objection — see HM Land Registry's practice guide on boundary agreements and determined boundaries for the detailed evidence and plan requirements.

Trespass, nuisance and time limits

An encroaching structure, planting, or activity that crosses your boundary is, in legal terms, usually a trespass to land — the tort of unlawful physical intrusion onto land in someone else's possession. Where the intrusion interferes with your use and enjoyment of your land without a direct physical crossing (for example, a badly sited structure blocking access), the claim may instead — or additionally — be framed in nuisance.

A claim founded in trespass is subject to the general 6-year limitation period for tort actions under section 2 of the Limitation Act 1980. That time limit governs your ability to bring a claim for damages or an injunction over the intrusion itself — it is a different question from whether the underlying title to the land can be lost through long possession, which is covered separately below.

Could a long-running encroachment become adverse possession?

This is the question that worries people most, and the honest answer is: it depends heavily on whether the land is registered, and the bar is higher than commonly assumed.

Registered land: the Schedule 6 procedure

Since the Land Registration Act 2002 came into force, registered land cannot simply be acquired by the ordinary passage of time. Section 96 of the Act disapplies the 12-year limitation period under section 15 of the Limitation Act 1980 for registered estates. Instead, Schedule 6 sets out a notice-based application procedure:

1. After 10 years of adverse possession, the possessor can apply to HM Land Registry to be registered as proprietor.
2. HM Land Registry must notify the registered owner (and certain other interested parties) of the application.
3. The registered owner can object, in which case the applicant is only entitled to be registered if one of three conditions in paragraph 5 of Schedule 6 is met:
   • it would be unconscionable, because of an equity by estoppel, for the registered owner to dispossess the applicant; or
   • the applicant is for some other reason entitled to be registered as proprietor; or
   • — most relevant to boundary encroachments — the land applied for is adjacent to land already belonging to the applicant, the exact boundary has not been determined under section 60, the applicant reasonably believed for at least 10 years of the possession period that the land belonged to them, and the disputed title was registered more than a year before the application.
4. If the registered owner does nothing, or the application isn't objected to, the applicant is entitled to be registered.
5. If a first application is rejected, the possessor can apply again after a further 2 years of continued adverse possession.

The third condition above exists specifically for cases like a fence, wall, or planting having sat marginally over an undetermined general boundary for a decade or more, with the occupier genuinely (and reasonably) believing it was theirs. It is a narrow exception, not a general rule — and it only helps where the boundary was never fixed under section 60.

Unregistered land: the 12-year rule

If the land in question is unregistered, the older regime still applies in full. Under section 15 of the Limitation Act 1980, the paper owner has 12 years from the date the right of action accrued to bring proceedings to recover the land. If that period expires without action, section 17 extinguishes the paper owner's title outright — there is no notice-and-objection procedure equivalent to Schedule 6 for unregistered land.

Why acting promptly matters

Whichever regime applies, the practical lesson is the same: the longer an encroachment is left unchallenged, the more it can shift the legal position — either by strengthening a neighbour's possible Schedule 6 application under the boundary-mistake exception, or by running down the unregistered-land limitation clock. See our detailed guide on adverse possession disputes for a fuller treatment of how these claims are run and defended, and our guide to boundary disputes for how boundary line disagreements are resolved more generally.

Fences, walls and the Party Wall etc. Act 1996

Where the encroachment involves a wall or a structure being built at or near the boundary, the Party Wall etc. Act 1996 is often raised — but it's important to understand what it does and doesn't do. GOV.UK's own explanatory booklet is direct on the point: the Act contains no provision to settle a boundary line dispute, and a surveyor's award made under it cannot decide where the boundary actually lies.

What the Act does regulate is a defined set of notifiable works between neighbours:

| Work | Section | Notice period | |---|---|---| | Building a new wall astride or up to the line of junction | Section 1 | At least 1 month before starting | | Work to an existing party wall or party structure | Section 2 | At least 2 months before starting | | Excavation within 3m (going deeper than the neighbour's foundations) or 6m (meeting a 45° line from the foundations) of a neighbouring building | Section 6 | At least 1 month before starting |

If a neighbour serves notice and you don't respond in writing within 14 days, a dispute is deemed to have arisen, triggering the Act's surveyor-based award procedure. If you receive no notice at all before work of this kind starts, the Act gives you the right to seek a court injunction or other legal redress — but again, that process is about the notifiable works themselves, not about establishing where the boundary is. If the real issue is the boundary line, that has to be resolved separately — by agreement, mediation, a determined boundary application, or the courts.

One frequent point of confusion is what actually counts as a "party wall" or "party fence wall" for the Act's purposes at all. Section 20 defines a party fence wall as a wall that is not part of a building but stands astride the boundary line between two owners' land and is used to separate it — in practice, a masonry structure such as brick, block or stone. An ordinary timber garden fence is not a party fence wall under section 20, so putting up or replacing a wooden fence does not, by itself, trigger the Act's notice requirements. If what's actually going up is a masonry wall on or near the boundary, though, sections 1 and 2 are likely to apply regardless of how modest the wall looks — the distinction turns on the material and position of the structure, not on what either neighbour calls it.

It's also worth knowing what happens if a section 1 notice goes unanswered. If you're the building owner and your neighbour doesn't respond to a line-of-junction notice within 14 days, you may still build the new wall — but only as an external wall wholly on your own land and at your own expense; building astride the boundary line itself needs the adjoining owner's consent.

Overhanging branches and encroaching roots

Trees are one of the most common sources of encroachment disputes, and the common law position here is well established. You have the right to cut back branches and roots that cross onto your land from a neighbour's tree, but that right is limited in three ways: you can only cut back to the boundary line, not beyond it; you have no right to enter your neighbour's land to do the work; and the material you cut generally remains your neighbour's property unless they've told you otherwise (in practice, most people simply dispose of small trimmings, but it's worth being aware of the position, especially for anything of value).

Two important caveats. First, if the tree is protected by a Tree Preservation Order or sits within a conservation area, you may need the local council's consent before doing any work, even to the parts overhanging your own land. Second, a persistently overgrown evergreen hedge blocking light or reasonable enjoyment of your property is a separate legal issue from root or branch encroachment — it falls under the "high hedges" complaints regime in Part 8 of the Anti-social Behaviour Act 2003, which lets you ask your local council to intervene, but only as a last resort after you've tried to resolve things directly with your neighbour.

It's worth being clear about what the high hedges regime does not cover. Section 65 defines a valid complaint as one about a barrier to light or access, and section 66 sets the height threshold at more than 2 metres for a line of evergreen or semi-evergreen trees or shrubs — both provisions are about height, not roots. Problems caused by a neighbour's roots, such as subsidence, drains blocked by root ingress, or roots undermining a patio or wall, fall outside Part 8 entirely. Root problems have to be pursued through the common law right to cut back described above or, where actual damage has resulted, a claim in nuisance or negligence — pursuing a root problem through a council high hedges complaint is a common and time-wasting mistake.

Worked examples

The fence that crept over the years

A fictional example: Priya's garden fence was replaced by the previous owner of her house roughly 15 years ago, sitting around 40cm onto what her neighbour's title plan appears to show as his land. The boundary was never determined under section 60, and Priya has genuinely believed throughout that the fence marks the true boundary. If her neighbour's registered title were ever challenged and Priya applied under Schedule 6 after 10 years' possession, and her neighbour objected, she could potentially rely on the boundary-mistake condition in paragraph 5(4)(c) — provided she can show the reasonable, long-held belief and that the boundary was never fixed. Whether it succeeds would turn heavily on the specific evidence, which is exactly why cases like this are rarely straightforward and benefit from an early conversation with an adviser rather than assumptions on either side.

The extension built on the wrong side of the line

A fictional example: James is planning a single-storey rear extension. His builder wants to excavate foundations 2.5 metres from his neighbour's garage wall, deeper than the garage's existing foundations. This falls squarely within section 6 of the Party Wall etc. Act 1996 (excavation within 3 metres, going deeper than the neighbour's foundations), so James must serve at least one month's notice before work starts, with plans showing the depth of excavation. If his neighbour doesn't respond in writing within 14 days, a dispute is deemed to have arisen and the surveyor-award procedure applies. None of this, however, would resolve a separate question of whether the extension's footprint itself sits over the true boundary line — that would need to be checked against the title and deeds before work starts, not assumed from the fence position.

The masonry wall he thought was "just a fence"

A fictional example: Tom's neighbour starts rebuilding what Tom has always called "the garden fence" — in fact a low brick wall standing astride the boundary — without serving any notice. Tom assumes the Party Wall etc. Act 1996 can't apply because "it's not a proper party wall." In fact, because the structure is masonry and stands astride the line of junction, it meets the section 20 definition of a party fence wall, and rebuilding or altering it falls within section 1 or section 2 depending on exactly what work is involved. Had it genuinely been a timber panel fence, the Act's notice regime would not have applied at all — the distinction turns entirely on what the structure is made of and where it sits, not on what either neighbour happens to call it.

Step-by-step: what to do if you spot an encroachment

1. Gather your evidence. Order up-to-date office copies of your title and title plan from HM Land Registry, dig out your original conveyance or transfer deed, and take clear, dated photographs of the suspected encroachment from several angles. Good evidence makes every later step easier.
2. Talk to your neighbour first. Many encroachment issues are genuine mistakes, and a calm, direct conversation resolves more disputes than letters ever do. Keep a written note of what was said and agreed, as this can matter later if positions harden.
3. Put it in writing. If an informal chat doesn't resolve matters, follow up with a measured written letter setting out the issue, what you've found, and what you'd like to happen. This creates a paper trail showing you've tried to engage reasonably.
4. Consider a boundary surveyor or mediation. Where there's genuine disagreement about where the line falls, a chartered surveyor experienced in boundary work can produce an expert report, which can support a determined boundary application or a boundary agreement. Mediation is often far cheaper and quicker than court, and it keeps the relationship workable if you're going to live next door for years.
5. Take formal action only if needed. If agreement isn't possible, options include a determined boundary application to HM Land Registry, a claim in trespass or nuisance, or seeking an injunction requiring removal of the encroachment. Court or tribunal proceedings should be a last resort — costs escalate quickly and outcomes aren't guaranteed, so take proper guidance before issuing proceedings.

Costs and proportionality

There's no fixed cost for resolving an encroachment dispute — it depends entirely on how far the matter goes. Informal resolution and mediation sit at the cheaper end; instructing a chartered surveyor for a boundary report costs more; a determined boundary application to HM Land Registry carries its own application fee on top of any surveyor or legal costs; and court or First-tier Tribunal proceedings are the most expensive route by a considerable margin, with no guarantee of recovering your costs even if you succeed. Boundary and encroachment disputes are notorious for legal costs outstripping the value of the land actually in dispute, which is precisely why early, measured action — and a realistic sense of what the disputed land is actually worth to you — pays off. Always check GOV.UK for any current HM Land Registry, tribunal or court fee before budgeting for a particular step.

This guide provides general information about encroachment disputes in England and Wales. It is not legal advice and is not a substitute for advice tailored to your specific circumstances — every boundary dispute turns on its own deeds, evidence and history. The law described was accurate as at August 2026 and is subject to change, including through new case law; always check GOV.UK and legislation.gov.uk for the most current position, or speak to an adviser about your specific situation.

Last reviewed: August 2026 by a non-practising solicitor · Next review due: August 2027 or on legislative change.