Extending your home in Stockton-on-Tees
Looking to extend your home in Stockton-on-Tees? Start here: extension types, guide prices for Stockton-on-Tees, the planning rules that apply and how a project runs.
- Postcode districtsTS16, TS17, TS18, TS19, TS20, TS23
- Price regionNorth East England (×0.91)
- Planning rulesEngland
- Site visitFree, no obligation
Covering Stockton-on-Tees and nearby
Site visits are available across Stockton-on-Tees (TS16, TS17, TS18, TS19, TS20, TS23). We also work in nearby Billingham (2 miles), Thornaby-on-Tees (3 miles), Yarm (5 miles), Hartlepool (9 miles), Darlington (10 miles). For homes towards North Yorkshire, Middlesbrough is around 3 miles away.
Popular extension prices in Stockton-on-Tees
Every figure below is a guide for Stockton-on-Tees, adjusted for North East England build costs (×0.91) and including VAT. Design and council fees are shown separately on each page.
| Extension type | Example size | Standard spec (inc VAT) |
|---|---|---|
| Extensions over a garage | 12 m² | £22,500 – £29,500 |
| Double-storey extensions | 32 m² | £52,000 – £68,500 |
| Single-storey rear extensions | 20 m² | £37,000 – £47,500 |
| Orangery extensions | 16 m² | £40,500 – £51,000 |
| Side return extensions | 11 m² | £24,000 – £30,500 |
| Conservatory replacement extensions | 14 m² | £27,000 – £35,500 |
| Kitchen extensions | 20 m² | £38,000 – £48,500 |
What works best for Stockton-on-Tees houses?
Across the North East, houses often have rear yards or modest gardens, so compact, well-lit single-storey extensions make the biggest difference.
The types we would usually look at first for a home in Stockton-on-Tees are single-storey rear extensions, utility and boot room extensions and kitchen extensions, depending on the garden and how the house is laid out.
Planning and building control in Stockton-on-Tees
In England a single-storey rear extension can usually go up to 3 m beyond the original rear wall of a semi-detached or terraced house, or 4 m on a detached house, without a planning application, provided it is no more than 4 m high, keeps eaves to 3 m within 2 m of a boundary and, with other buildings, covers no more than half the land around the original house. The larger home extension prior approval scheme raises those depths to 6 m and 8 m, with neighbours notified and a 42-day decision.
In England a single-storey side extension can be permitted development if it is no more than 4 m high and no wider than half the width of the original house. Two-storey side extensions, and any side extension on designated land such as a conservation area, need a householder planning application.
In a conservation area, national park, National Landscape, the Broads or a World Heritage Site the permitted development limits are tighter (no side or two-storey extensions without an application). Listed homes need listed building consent, and if permitted development rights have been removed, any extension needs an application.
Building regulations approval is separate from planning. In England you can use the council's building control team or a registered building control approver; a full plans application gets the drawings checked before work starts, and the inspector signs the work off with a completion certificate.
Applications are decided by the local planning authority (your district, borough or unitary council).
All extension types we build in Stockton-on-Tees
- Utility and boot room extensions · from £12,500
- Bungalow extensions · from £23,500
- Extensions over a garage · from £21,500
- Flat roof extensions · from £19,000
- Glass box extensions · from £27,000
- Kitchen extensions · from £24,500
- Extension plans and drawings · from £1,050
- Bedroom extensions · from £23,500
- Annexe extensions · from £50,000
- Side extensions · from £20,000
- Wraparound extensions · from £32,500
- Side return extensions · from £16,000
- Pitched roof extensions · from £20,000
- Timber frame extensions · from £19,000
- Single-storey rear extensions · from £19,000
- Porch extensions · from £3,600
- Home office extensions · from £14,500
- Orangery extensions · from £27,000
- Building regulations for extensions · from £800
- Double-storey extensions · from £34,500
- Conservatory replacement extensions · from £18,000
- Planning permission for extensions · from £300
Free site visit
A designer visits, takes measurements and photos, and discusses layouts, budget and timing with you.
Design and approvals
We draw the design, agree it with you and handle planning or permitted development checks and building regulations.
Fixed written price
You receive a written, itemised price and programme. Nothing starts until you are happy with it.
Build and sign-off
Our team builds the extension, keeps you updated weekly and finishes with building control sign-off.
Questions about extensions in Stockton-on-Tees
How much does an extension cost in Stockton-on-Tees?
Using our North East England factor (×0.91), a standard-spec single-storey extension of 20 m² is a guide £37,000 to £47,500 including VAT, and a 32 m² two-storey extension £52,000 to £68,500. Your written price follows the survey.
Can I get a price before anyone visits?
Yes. This page shows guide prices adjusted for Stockton-on-Tees, and the guide-price tool gives a range for your own size and finish in about a minute.
Do I need planning permission for an extension in Stockton-on-Tees?
Not always. It depends on the size, position and your property's history. Many single-storey rear extensions in England are permitted development or can use prior approval.
How long does an extension take in Stockton-on-Tees?
Usually 2 to 4 months of design and approvals, then 10 to 16 weeks on site for a single-storey extension or 16 to 24 weeks for two storeys.
Who do I contract with?
Your contract is with S&K Property Investments and Improvement Ltd, which designs and manages the project and the build teams who carry it out.
Book a free site visit in Stockton-on-Tees
We will measure up, check the planning position and give you honest guide figures.
- Free, no-obligation site visit
- Planning route checked before you spend on drawings
- Written price once the design is agreed
- Building control sign-off at the end
Prefer to talk? Call 0800 088 6341 or .
Book a free site visit
Tell us a little about the project and we will arrange a time.