Extensions in Taunton: design, planning and build
Looking to extend your home in Taunton? Start here: extension types, guide prices for Taunton, the planning rules that apply and how a project runs.
- Postcode districtsTA1, TA2, TA3
- Price regionSouth West England (×1.02)
- Planning rulesEngland
- Site visitFree, no obligation
Popular extension prices in Taunton
Every figure below is a guide for Taunton, adjusted for South West England build costs (×1.02) and including VAT. Design and council fees are shown separately on each page.
| Extension type | Example size | Standard spec (inc VAT) |
|---|---|---|
| Conservatory replacement extensions | 14 m² | £30,500 – £39,500 |
| Side return extensions | 11 m² | £26,500 – £34,000 |
| Extensions over a garage | 12 m² | £25,500 – £33,500 |
| Wraparound extensions | 25 m² | £58,500 – £74,000 |
| Kitchen extensions | 20 m² | £42,500 – £54,500 |
| Single-storey rear extensions | 20 m² | £41,500 – £53,500 |
| Orangery extensions | 16 m² | £45,500 – £57,500 |
Planning rules in Taunton
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 two-storey rear extension is permitted development only if it projects no more than 3 m from the original rear wall, sits at least 7 m from the rear boundary, matches the roof pitch and uses obscure, non-opening side windows upstairs. Most two-storey extensions therefore go through a householder planning application, which costs £548 from 1 April 2026 and normally takes about 8 weeks.
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).
Which extension suits a Taunton home?
In the South West, local stone, render and brick vary from town to town, so matching materials is a big part of designing an extension that looks right.
The types we would usually look at first for a home in Taunton are pitched roof extensions, annexe extensions and single-storey rear extensions, depending on the garden and how the house is laid out.
Areas we cover around Taunton
Across TA1, TA2, TA3, we can visit, measure and advise. Nearby, we also take on projects in Bridgwater (9 miles), Burnham-on-Sea (16 miles), Yeovil (21 miles), Weston-super-Mare (24 miles), Clevedon (31 miles). Just over the Devon border, Tiverton is about 19 miles away.
Every extension type in Taunton
- Pitched roof extensions · from £22,500
- Utility and boot room extensions · from £14,000
- Glass box extensions · from £30,500
- Side return extensions · from £18,000
- Building regulations for extensions · from £900
- Single-storey rear extensions · from £21,000
- Kitchen extensions · from £27,500
- Wraparound extensions · from £36,500
- Porch extensions · from £4,050
- Double-storey extensions · from £38,500
- Bungalow extensions · from £26,500
- Timber frame extensions · from £21,000
- Conservatory replacement extensions · from £20,000
- Home office extensions · from £16,000
- Bedroom extensions · from £26,500
- Flat roof extensions · from £21,000
- Orangery extensions · from £30,500
- Annexe extensions · from £56,000
- Extension plans and drawings · from £1,200
- Planning permission for extensions · from £350
- Side extensions · from £22,000
- Extensions over a garage · from £24,000
Free site visit
It starts with a visit to your house to measure, check access and talk through ideas and budget.
Design and approvals
We produce the drawings and structural design, and manage the approvals so they are in place before work starts.
Fixed written price
The price is fixed in writing once the design is settled, with a clear programme and payment stages.
Build and sign-off
The build is managed from start to finish, inspected at each stage and signed off on completion.
Questions about extensions in Taunton
How much does an extension cost in Taunton?
Using our South West England factor (×1.02), a standard-spec single-storey extension of 20 m² is a guide £41,500 to £53,500 including VAT, and a 32 m² two-storey extension £58,500 to £77,000. Your written price follows the survey.
Do you handle building regulations?
Yes. We prepare the drawings and calculations, submit them and book inspections, ending with a completion certificate.
Can I get a price before anyone visits?
Yes. This page shows guide prices adjusted for Taunton, 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 Taunton?
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.
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 Taunton
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.