Gloucester house extensions
From a small utility to a two-storey addition, we take on house extensions throughout Gloucester, starting with a free visit and a planning check.
- Postcode districtsGL1, GL2, GL3, GL4
- Price regionSouth West England (×1.02)
- Planning rulesEngland
- Site visitFree, no obligation
What works best for Gloucester 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, pitched roof extensions, single-storey rear extensions or annexe extensions gives the most useful space for the budget.
Do extensions in Gloucester 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 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).
Guide prices for Gloucester
Use these Gloucester 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) |
|---|---|---|
| Single-storey rear extensions | 20 m² | £41,500 – £53,500 |
| Side return extensions | 11 m² | £26,500 – £34,000 |
| Conservatory replacement extensions | 14 m² | £30,500 – £39,500 |
| Double-storey extensions | 32 m² | £58,500 – £77,000 |
| Kitchen extensions | 20 m² | £42,500 – £54,500 |
| Wraparound extensions | 25 m² | £58,500 – £74,000 |
Areas we cover around Gloucester
Across GL1, GL2, GL3, GL4, we can visit, measure and advise. The same team covers Cheltenham (7 miles), Stroud (8 miles), Tewkesbury (9 miles), Dursley (13 miles), Cirencester (15 miles), all within easy reach. Ross-on-Wye, in Herefordshire, is roughly 15 miles from Gloucester and also on our list.
All extension types we build in Gloucester
- Wraparound extensions · from £36,500
- Orangery extensions · from £30,500
- Extension plans and drawings · from £1,200
- Utility and boot room extensions · from £14,000
- Extensions over a garage · from £24,000
- Conservatory replacement extensions · from £20,000
- Planning permission for extensions · from £350
- Side return extensions · from £18,000
- Bungalow extensions · from £26,500
- Annexe extensions · from £56,000
- Porch extensions · from £4,050
- Single-storey rear extensions · from £21,000
- Kitchen extensions · from £27,500
- Bedroom extensions · from £26,500
- Home office extensions · from £16,000
- Double-storey extensions · from £38,500
- Glass box extensions · from £30,500
- Building regulations for extensions · from £900
- Flat roof extensions · from £21,000
- Side extensions · from £22,000
- Pitched roof extensions · from £22,500
- Timber frame extensions · from £21,000
Free site visit
We visit your Gloucester home, measure up, talk through what you want and check the planning position.
Design and approvals
We draw the design, agree it with you and handle planning or permitted development checks and building regulations.
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
Our team builds the extension, keeps you updated weekly and finishes with building control sign-off.
Questions about extensions in Gloucester
How much does an extension cost in Gloucester?
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.
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.
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.
How long does an extension take in Gloucester?
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.
Book a free site visit in Gloucester
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.