The short answer
Corner plots often need more care than ordinary plots. Any boundary that runs next to a highway used by vehicles is limited to 1 metre without planning permission, and a corner plot typically has two such road-facing boundaries rather than one. Near the junction itself, the council or highway authority may also require a visibility splay — a clear, low zone so drivers can see along both roads — which can keep the fence lower than 1 metre at that point. Internal boundaries away from the road keep the usual 2 metre limit. So whether you need permission depends on which boundary you are fencing and how close it is to the junction.
Corner plots give you a bigger garden but a more complicated set of fencing rules, because two sides face the road and the junction adds visibility requirements. Here is how to work out what you can build where.
Corner plot fences at a glance
- Road-facing boundaries1 metre limit each, without permission
- Internal boundaries2 metre limit
- Near the junctionVisibility splay may apply
- Above the limitsPlanning permission needed
- Estate covenantsOften restrict corner-plot frontages
Two roadside boundaries, not one
The defining feature of a corner plot is that it fronts two roads. Each boundary that runs alongside a highway used by vehicles (or its footpath) is subject to the 1 metre permitted development limit, the same lower limit that applies to any roadside fence. On a corner plot, that usually means both the front boundary and the side boundary facing the second road are capped at 1 metre without permission.
This catches many corner-plot owners out, because they apply the 2 metre rule they have heard about to the side return, only to find it faces a road and is therefore limited to 1 metre. The internal boundaries, the ones shared with neighbouring gardens and not facing a road, keep the standard 2 metre allowance. So the same plot can have different height limits on different sides.
Visibility splays at the junction
Corner plots sit right where road safety matters most: at or near a junction. To keep sightlines clear, the council or highway authority often requires a visibility splay at the corner — a triangular zone that must be kept clear of obstructions above a low level so that drivers approaching and leaving the junction can see along both roads, and pedestrians can be seen.
Within a splay, the permitted height can be lower than 1 metre, and the requirement may be set out in a planning condition or in the original estate layout. A fence that is fine on height alone can still be a problem if it sits inside a required splay. This is why corner plots near busy junctions are scrutinised more closely, and why it is worth checking splay requirements before fencing the corner.
| Corner-plot boundary | Typical limit without permission |
|---|---|
| Front boundary facing road 1 | 1 metre |
| Side boundary facing road 2 | 1 metre |
| Within a visibility splay at the corner | Often lower than 1 metre |
| Internal boundary with a neighbour | 2 metres |
| Anything above the limit | Planning permission required |
Indicative height limits across a corner plot. Source: Planning Portal permitted development guidance; highway visibility requirements vary locally.
Why corner plots are treated more strictly
The extra caution around corner plots comes down to the concentration of road-safety risks at junctions:
- Crossing sightlines: traffic on two roads needs to see each other and any vehicles emerging from the side road.
- Pedestrian visibility: people, especially children, may cross at or near the junction, and a tall corner fence can hide them until the last moment.
- Emerging vehicles: a car leaving the corner property's drive needs a clear view in both directions.
A solid 2 metre fence wrapped around a corner would obstruct all of these, which is why the 1 metre limit and any visibility splay apply. The rules are not arbitrary; they reflect the practical need to keep a junction safe.
How to fence a corner plot lawfully
To stay within the rules on a corner plot, work boundary by boundary:
- Identify which boundaries face a road. Those are limited to 1 metre without permission. The internal boundaries can be up to 2 metres.
- Check for a visibility splay at the junction, especially if there is a vehicle access. The council or highway authority can confirm what must be kept clear.
- Read any planning conditions and estate covenants. Corner plots on newer estates frequently have conditions or covenants restricting front and side frontages to keep the junction open.
- Apply for permission if you need height. If you want a taller road-facing fence for privacy or noise, a planning application is the proper route, decided heavily on highway safety.
A pre-application enquiry or a lawful development certificate gives certainty before you build. Many corner-plot owners achieve privacy with a low fence plus set-back planting, which keeps sightlines clear while softening the boundary.
If you want a taller corner fence
Tall fencing on a corner plot is not impossible, but permission turns substantially on the junction. The council will assess whether the proposed height harms visibility for drivers and pedestrians, whether it sits within any required splay, and whether it suits the character of the street. Where a corner is not especially sensitive, additional height is sometimes granted; near a busy or awkward junction it is more likely to be refused. Because the safety case is central, it is best to discuss a taller corner fence with the planning authority in advance rather than building first and risking enforcement. Where privacy is the goal, set-back planting and a low boundary often deliver it without engaging the visibility concerns at all.
Frequently asked questions
Why is my side fence on a corner plot limited to 1 metre?
Because it faces a road. On a corner plot, both the front and the side boundary often run alongside a highway used by vehicles, and each roadside boundary is limited to 1 metre without planning permission. Only the internal boundaries, away from the road, keep the 2 metre limit.
What is a visibility splay on a corner plot?
A visibility splay is a zone at the junction that must be kept clear of obstructions above a low level, so drivers can see along both roads and pedestrians can be seen. On corner plots it can require the fence to be lower than 1 metre, or set back, at the corner. The council or highway authority sets the requirement.
Can I have a 6ft fence anywhere on a corner plot?
Only on internal boundaries that do not face a road, where the 2 metre limit applies. A 6ft fence on a road-facing boundary exceeds the 1 metre roadside limit and needs planning permission, and may also conflict with a visibility splay near the junction.
Sources & further reading
- Planning Portal — fences, gates and garden walls
- GOV.UK — when you need planning permission
- GOV.UK — lawful development certificates
Figures on this page are typical UK ranges drawn from published sources and depend on your specific garden. They are guidance, not a quotation.