Exeter house extensions
Looking to extend your home in Exeter? Start here: extension types, guide prices for Exeter, the planning rules that apply and how a project runs.
- Postcode districtsEX1, EX2, EX3, EX4, EX5, EX6
- Price regionSouth West England (×1.02)
- Planning rulesEngland
- Site visitFree, no obligation
Where we work near Exeter
Across EX1, EX2, EX3, EX4, EX5, EX6, we can visit, measure and advise. Neighbouring towns we cover include Exmouth (9 miles), Tiverton (12 miles), Newton Abbot (14 miles), Torquay (18 miles), Paignton (20 miles). Taunton, in Somerset, is roughly 27 miles from Exeter and also on our list.
Do extensions in Exeter need planning permission?
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 return infill is often permitted development if it stays within the height limits and is no wider than half the width of the original house. Conservation areas, listed buildings and flats always need an application, and the boundary wall usually brings in the Party Wall Act.
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).
Guide prices for Exeter
Use these Exeter guide prices to sense-check a budget; the guide-price tool narrows them to your own size, and the site visit turns them into a written figure.
| Extension type | Example size | Standard spec (inc VAT) |
|---|---|---|
| Wraparound extensions | 25 m² | £58,500 – £74,000 |
| Side return extensions | 11 m² | £26,500 – £34,000 |
| Single-storey rear extensions | 20 m² | £41,500 – £53,500 |
| Double-storey extensions | 32 m² | £58,500 – £77,000 |
| Conservatory replacement extensions | 14 m² | £30,500 – £39,500 |
| Orangery extensions | 16 m² | £45,500 – £57,500 |
What works best for Exeter houses?
South West homes range from terraced streets in the cities to stone cottages and bungalows in the countryside, and conservation areas are common in historic centres.
For many houses here, annexe extensions, single-storey rear extensions or orangery extensions gives the most useful space for the budget.
All extension types we build in Exeter
- Side return extensions · from £18,000
- Conservatory replacement extensions · from £20,000
- Extensions over a garage · from £24,000
- Kitchen extensions · from £27,500
- Side extensions · from £22,000
- Glass box extensions · from £30,500
- Utility and boot room extensions · from £14,000
- Home office extensions · from £16,000
- Timber frame extensions · from £21,000
- Single-storey rear extensions · from £21,000
- Double-storey extensions · from £38,500
- Annexe extensions · from £56,000
- Flat roof extensions · from £21,000
- Orangery extensions · from £30,500
- Porch extensions · from £4,050
- Extension plans and drawings · from £1,200
- Building regulations for extensions · from £900
- Wraparound extensions · from £36,500
- Pitched roof extensions · from £22,500
- Bungalow extensions · from £26,500
- Planning permission for extensions · from £350
- Bedroom extensions · from £26,500
Free site visit
We visit your Exeter home, measure up, talk through what you want and check the planning position.
Design and approvals
Once the layout is agreed, we deal with the council: planning permission or written confirmation that none is needed, plus building control.
Fixed written price
We confirm the build price in writing, based on the approved drawings and the finishes you have chosen.
Build and sign-off
We build it with one project manager, book the building control inspections and hand over the completion certificate.
Questions about extensions in Exeter
How much does an extension cost in Exeter?
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.
Can I get a price before anyone visits?
Yes. This page shows guide prices adjusted for Exeter, and the guide-price tool gives a range for your own size and finish in about a minute.
Will my neighbours need to be told?
If you apply for planning or prior approval the council notifies them, and in England party wall notices may be needed for work near a shared boundary.
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.
Do you handle building regulations?
Yes. We prepare the drawings and calculations, submit them and book inspections, ending with a completion certificate.
Book a free site visit in Exeter
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.