Extending your home in Brecon
We design and build house extensions for homes in Brecon and the surrounding Powys area, with guide prices adjusted for the region.
- Postcode districtsLD3
- Price regionWales (×0.93)
- Planning rulesWales
- Site visitFree, no obligation
Where we work near Brecon
We cover Brecon and the postcode districts LD3. We also work in nearby Llandrindod Wells (21 miles), Newtown (39 miles), Welshpool (49 miles). Ebbw Vale, in Gwent, is roughly 14 miles from Brecon and also on our list.
Popular extension prices in Brecon
Prices on this page use our Wales factor of ×0.93, include VAT at 20% and cover the build; your written price follows a survey and agreed drawings.
| Extension type | Example size | Standard spec (inc VAT) |
|---|---|---|
| Wraparound extensions | 25 m² | £53,000 – £67,500 |
| Kitchen extensions | 20 m² | £39,000 – £49,500 |
| Orangery extensions | 16 m² | £41,500 – £52,500 |
| Extensions over a garage | 12 m² | £23,000 – £30,500 |
| Single-storey rear extensions | 20 m² | £38,000 – £48,500 |
Approvals for an extension in Brecon
In Wales a single-storey rear extension can usually project up to 4 m beyond the rear wall without a planning application, if it is no more than 4 m high, keeps eaves to 3 m and overall height to 4 m within 2 m of a boundary, and covers no more than half the land around the original house. Wales has no larger home extension prior approval scheme.
In Wales a rear extension of more than one storey can be permitted development only if the ground floor projects no more than 4 m, the upper floor no more than 3 m, it stays at least 10.5 m from the rear boundary and it is not in a conservation area, national park, National Landscape or World Heritage Site. Anything larger needs a planning application to the council.
In a conservation area, national park, National Landscape or 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. Wales has its own building regulations and approved documents; the council or a registered building control approver checks the plans, inspects the work and issues a completion certificate.
Applications are decided by the local planning authority (your county or county borough council, or the national park authority).
What works best for Brecon houses?
In Wales, terraced houses with rear offshoots are common in the towns, while detached houses and bungalows dominate in rural areas.
Start by comparing bungalow extensions, side return extensions and pitched roof extensions: between them they cover most of the layouts we see requested for houses like these.
Every extension type in Brecon
- Utility and boot room extensions · from £13,000
- Annexe extensions · from £51,000
- Extension plans and drawings · from £1,100
- Planning permission for extensions · from £300
- Double-storey extensions · from £35,000
- Timber frame extensions · from £19,500
- Side return extensions · from £16,500
- Porch extensions · from £3,700
- Home office extensions · from £14,500
- Side extensions · from £20,000
- Orangery extensions · from £27,500
- Glass box extensions · from £27,500
- Flat roof extensions · from £19,500
- Conservatory replacement extensions · from £18,500
- Single-storey rear extensions · from £19,500
- Extensions over a garage · from £22,000
- Bungalow extensions · from £24,000
- Building regulations for extensions · from £800
- Kitchen extensions · from £25,000
- Pitched roof extensions · from £20,500
- Wraparound extensions · from £33,000
- Bedroom extensions · from £24,000
Free site visit
A designer visits, takes measurements and photos, and discusses layouts, budget and timing with you.
Design and approvals
Drawings are prepared and agreed with you, then submitted for the right planning route and building regulations approval.
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 Brecon
How much does an extension cost in Brecon?
Using our Wales factor (×0.93), a standard-spec single-storey extension of 20 m² is a guide £38,000 to £48,500 including VAT, and a 32 m² two-storey extension £53,500 to £70,000. Your written price follows the survey.
Do you cover all of Brecon?
Yes, including the surrounding parts of Powys. Site visits are free and there is no obligation.
Will my neighbours need to be told?
If you apply for planning the council notifies them, and in Wales 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.
Book a free site visit in Brecon
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.