Planning Policy

Extension in Stockton-on-Tees

Do you need planning permission for a single-storey extension in Stockton-on-Tees? Here is what the permitted development rules say, how Stockton-on-Tees Borough 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 Stockton-on-Tees?

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 Stockton-on-Tees this matters: the borough has 11 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 Stockton-on-Tees

How Stockton-on-Tees’s designations apply

Designation in Stockton-on-TeesPublished
Conservation areas11
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 Stockton-on-Tees 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 Stockton-on-Tees address

A Planning Policy report reads the designations on your exact Stockton-on-Tees address, quotes the Stockton-on-Tees Borough 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 Stockton-on-Tees, answered

Do I need planning permission for a single-storey extension in Stockton-on-Tees?
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 Stockton-on-Tees this matters: the borough has 11 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 Stockton-on-Tees?
Yes. extension relies on permitted development rights that are restricted on article 2(3) land, which includes conservation areas. Stockton-on-Tees Borough Council has 11 of them, so inside a boundary you are more likely to need a full application.
How does Stockton-on-Tees 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 Stockton-on-Tees Borough Council Local Plan and national policies that apply, verbatim, and shows decided applications nearby.
6.0: More for Stockton-on-Tees

Other projects in Stockton-on-Tees