Planning Policy

Extension in Vale of White Horse

Do you need planning permission for a single-storey extension in Vale of White Horse? Here is what the permitted development rules say, how Vale of White Horse District Council’s designations change them, and what decides an application, grounded in the official guidance and quoted verbatim.

Modern glazed extension against a classical stone house
New glass against old stone: the extension question every authority weighs
The short answer

Do you need planning permission for a single-storey extension in Vale of White Horse?

Many single-storey rear extensions are permitted development under Class A, within set limits on depth, height and how much of the garden they cover, so no planning application is needed. In Vale of White Horse this matters: the borough has 54 conservation areas, and inside those the permitted development route narrows or is removed, so a single-storey extension can need a full application where it would not two streets away.

1.0: The permitted development position

The starting point

Many single-storey rear extensions are permitted development under Class A, within set limits on depth, height and how much of the garden they cover, so no planning application is needed.

“This provides permitted development rights for the enlargement, improvement or other alteration of a house.”PD technical guidance, Class A · full text in the library → · official source →
2.0: What changes it in Vale of White Horse

How Vale of White Horse’s designations apply

Designation in Vale of White HorsePublished
Conservation areas54
Article 4 directions (PD removed)0
Listed building outlines0

Because extension depends on permitted development rights restricted on article 2(3) land, the conservation areas above are decisive: inside one, expect to need a full application. Counts are read live from planning.data.gov.uk; your report checks them against your exact address.

3.0: How it’s decided

What Vale of White Horse weighs

Where an application is needed, design does the deciding: depth against the neighbouring rear walls, loss of light, roof form, and materials against the parent building.

Read the full extension guide →

4.0: A worked example

See a single-storey extension in a real report

London’s most common project: a kitchen extension behind a Victorian terrace in a conservation area with an Article 4 direction. 262 nearby decisions, 81% approved.

Read the rear extension in clapham case study →

Your report

Get a planning report for your Vale of White Horse address

A Planning Policy report reads the designations on your exact Vale of White Horse address, quotes the Vale of White Horse District Council and national policies that apply to a single-storey extension, and (on Pro) shows decided applications nearby with outcomes.

5.0: Questions

Extension in Vale of White Horse, answered

Do I need planning permission for a single-storey extension in Vale of White Horse?
Many single-storey rear extensions are permitted development under Class A, within set limits on depth, height and how much of the garden they cover, so no planning application is needed. In Vale of White Horse this matters: the borough has 54 conservation areas, and inside those the permitted development route narrows or is removed, so a single-storey extension can need a full application where it would not two streets away.
Does a conservation area affect a single-storey extension in Vale of White Horse?
Yes. extension relies on permitted development rights that are restricted on article 2(3) land, which includes conservation areas. Vale of White Horse District Council has 54 of them, so inside a boundary you are more likely to need a full application.
How does Vale of White Horse decide a extension application?
Where an application is needed, design does the deciding: depth against the neighbouring rear walls, loss of light, roof form, and materials against the parent building. A Planning Policy report quotes the specific Vale of White Horse District Council Local Plan and national policies that apply, verbatim, and shows decided applications nearby.
6.0: More for Vale of White Horse

Other projects in Vale of White Horse