How high can a fence be without planning permission?

Up to 1 metre if adjacent to a highway used by vehicles. Up to 2 metres elsewhere. These are the GPDO maximums.

Do I need planning permission for a garden wall?

Not if the wall is under 2 metres high (or 1 metre adjacent to a highway). Higher walls, or walls in areas with Article 4 Directions, need planning permission.

How much does fencing cost?

Boundary treatment costs in North West England typically range between £700 and £3,500, depending on length and materials. Timber fencing is cheapest, brick walls and metal railings cost significantly more.

Can I replace an existing fence with a taller one?

Yes, provided the replacement stays within the PD height limits (1m by highway, 2m elsewhere). The previous height is not relevant — it's the new height that matters.

Project guideGPDO Class A (Part 2)

Fence, wall or gate in Knowsley: Planning Permission Guide

Your guide to fences, walls, and gates in Knowsley — height limits, permitted development rules, and costs.

89%

approved in Knowsley

£548

application fee

8 wks

typical decision

1–2m

PD height

Based on 46 decided applications in Knowsley over 24 months (41 granted, 5 refused).

Knowsley has conservation areas around Prescot, Huyton, and Knowsley Village. Listed buildings cluster around Knowsley Hall (the Earl of Derby's estate) and around Prescot Parish Church. Substantial Green Belt covers much of the borough. The borough is predominantly post-war housing with occasional heritage pockets. Green Belt boundaries affect many edge-of-settlement properties. Flood zones apply along the Alt and Dean Brook.

Council planning portal Pre-application advice

Local data PD rules Costs Professionals Constraints FAQs

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5 nearest comparables & refusal reasons for your address.

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Recent fence, wall or gate decisions in Knowsley

The 5 most recent decided applications. Addresses redacted to postcode area.

Discharged

APPLICATION TO DISCHARGE CONDITION 12 (GATE TO REAR ACCESS - PLOT 6) PERTAINING TO PLANNING PERMISSION 20/00329/FUL.

2026-06-26

Granted

ERECTION OF A RAISED PATIO WITH NEW BI-FOLD DOORS AND ACCESS RAMP TO THE REAR TOGETHER WITH AN EXTERNAL PLATFORM LIFT FOR ACCESS. CREATIO…

L362026-04-20

Granted

S73 APPLICATION FOR VARIATION OF CONDITION 2 (APPROVED PLANS) ATTACHED TO PLANNING PERMISSION 23/02782/FUL (ERECTION OF 1NO. RETAIL UNIT …

L362026-03-27

Granted

NON-MATERIAL AMENDMENTS TO 21/00959/FUL (ERECTION OF A DETACHED INDUSTRIAL BUILDING (MIXED E(g)(iii), B2 & B8 USES) WITH ANCILLARY OFFICE…

2026-03-23

Granted

EXTENSION OF EXISTING CAR PARK TO CREATE ADDITIONAL SPACES FOR DROP OFF AND PICK UP WITHIN EXISTING SCHOOL BOUNDARY. WIDENING OF VEHICULA…

L362026-02-17

These are borough-wide. See the 5 nearest to your address.

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Permitted Development Rules

Class A (Part 2)Part 2

Gates, fences, walls or other means of enclosure

GPDO 2015, Schedule 2, Part 2, Class A

Fences, walls, and gates are covered by Part 2, Class A of the GPDO. The main consideration is height: up to 1 metre next to a highway, up to 2 metres elsewhere.

Key dimension limits

Max 1m adjacent to highwayMax 2m elsewhere

These are the maximum GPDO limits for a detached house with no constraints. Your actual limits depend on your property type, location, and any planning restrictions.

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Typical Costs in North West England

Boundary treatment costs depend on the length, material, and type — timber fencing is cheapest, brick walls are the most expensive.

Fence, wall or gateNorth West England

Typical total

£700–£3,500

Typically includes

MaterialsInstallationFoundations (for walls)

Typically excludes

Planning application fee

Timber fencing is cheapest. Brick walls and metal railings cost significantly more per metre.

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Which Professionals Do You Need?

Boundary treatments rarely need professional services beyond a competent builder or fencing contractor.

This project is unlikely to need specialist professional services beyond a competent builder.

Architect / designerNot needed

This type of project does not typically require architectural services.

Structural engineerNot needed

Party wall surveyorNot needed

Planning consultantNot needed

This guidance is based on a typical semi-detached house with no special constraints. Listed buildings, conservation areas, and attached properties may require additional professional input.

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Conservation Areas & Listed Buildings

In conservation areas, the same height rules apply, but you should consider materials that are sympathetic to the area character. Some Article 4 Directions restrict boundary treatments.

Conservation areas

Properties in conservation areas often have reduced permitted development rights. Some project types (like side extensions) lose PD rights entirely. An Article 4 Direction can remove additional PD rights.

Listed buildings

Listed buildings (Grade I, II*, or II) have no permitted development rights at all. Any external alteration requires Listed Building Consent in addition to any planning permission. An architect experienced in heritage work is essential.

Check if your property is in a conservation area or has other planning constraints.

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Frequently Asked Questions

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Related guides

Driveway

Porch

GPDO Class D

Outbuilding / garden building

GPDO Class E

All guides