Extensions in Kingswood: design, planning and build
Every type of house extension in Kingswood, from single-storey kitchen extensions to two-storey additions, side returns and orangeries. We design, handle the approvals and build.
- Postcode districtsBS15, BS16, BS30
- Price regionSouth West England (×1.02)
- Planning rulesEngland
- Site visitFree, no obligation
Do extensions in Kingswood 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).
What works best for Kingswood houses?
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.
Start by comparing annexe extensions, orangery extensions and pitched roof extensions: between them they cover most of the layouts we see requested for houses like these.
What extensions cost in Kingswood
Every figure below is a guide for Kingswood, 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 |
| Kitchen extensions | 20 m² | £42,500 – £54,500 |
| Extensions over a garage | 12 m² | £25,500 – £33,500 |
| Single-storey rear extensions | 20 m² | £41,500 – £53,500 |
| Double-storey extensions | 32 m² | £58,500 – £77,000 |
| Wraparound extensions | 25 m² | £58,500 – £74,000 |
Areas we cover around Kingswood
Postcode districts we cover around Kingswood include BS15, BS16, BS30. Nearby, we also take on projects in Mangotsfield (2 miles), Yate (7 miles), Thornbury (10 miles), Dursley (18 miles), Stroud (24 miles). Keynsham, in Somerset, is roughly 3 miles from Kingswood and also on our list.
Every extension type in Kingswood
- Utility and boot room extensions · from £14,000
- Orangery extensions · from £30,500
- Side extensions · from £22,000
- Kitchen extensions · from £27,500
- Conservatory replacement extensions · from £20,000
- Extension plans and drawings · from £1,200
- Single-storey rear extensions · from £21,000
- Pitched roof extensions · from £22,500
- Home office extensions · from £16,000
- Timber frame extensions · from £21,000
- Annexe extensions · from £56,000
- Wraparound extensions · from £36,500
- Extensions over a garage · from £24,000
- Double-storey extensions · from £38,500
- Planning permission for extensions · from £350
- Side return extensions · from £18,000
- Glass box extensions · from £30,500
- Bedroom extensions · from £26,500
- Bungalow extensions · from £26,500
- Porch extensions · from £4,050
- Flat roof extensions · from £21,000
- Building regulations for extensions · from £900
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
The price is fixed in writing once the design is settled, with a clear programme and payment stages.
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 Kingswood
How much does an extension cost in Kingswood?
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 cover all of Kingswood?
Yes, including the surrounding parts of Gloucestershire. Site visits are free and there is no obligation.
How long does an extension take in Kingswood?
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.
Do I need planning permission for an extension in Kingswood?
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.
Book a free site visit in Kingswood
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.