Briton Ferry house extensions
Planning an extension in Briton Ferry? Compare extension types, see guide prices adjusted for Briton Ferry and book a free site visit.
- Postcode districtsSA12
- Price regionWales (×0.93)
- Planning rulesWales
- Site visitFree, no obligation
Which extension suits a Briton Ferry home?
Welsh housing ranges from stone terraces in the valleys to render-and-slate houses and modern estates, and the Welsh planning rules differ from England's in several places.
The types we would usually look at first for a home in Briton Ferry are single-storey rear extensions, pitched roof extensions and bungalow extensions, depending on the garden and how the house is laid out.
Areas we cover around Briton Ferry
Across SA12, we can visit, measure and advise. We also work in nearby Neath (2 miles), Clydach (5 miles), Swansea (5 miles), Gorseinon (10 miles). Just over the Mid Glamorgan border, Maesteg is about 7 miles away.
What extensions cost in Briton Ferry
Use these Briton Ferry 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) |
|---|---|---|
| Double-storey extensions | 32 m² | £53,500 – £70,000 |
| Kitchen extensions | 20 m² | £39,000 – £49,500 |
| Conservatory replacement extensions | 14 m² | £27,500 – £36,000 |
| Orangery extensions | 16 m² | £41,500 – £52,500 |
| Wraparound extensions | 25 m² | £53,000 – £67,500 |
| Extensions over a garage | 12 m² | £23,000 – £30,500 |
| Single-storey rear extensions | 20 m² | £38,000 – £48,500 |
Planning and building control in Briton Ferry
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).
Choose an extension type
- Pitched roof extensions · from £20,500
- Porch extensions · from £3,700
- Extension plans and drawings · from £1,100
- Annexe extensions · from £51,000
- Side extensions · from £20,000
- Planning permission for extensions · from £300
- Glass box extensions · from £27,500
- Extensions over a garage · from £22,000
- Bungalow extensions · from £24,000
- Double-storey extensions · from £35,000
- Single-storey rear extensions · from £19,500
- Bedroom extensions · from £24,000
- Building regulations for extensions · from £800
- Wraparound extensions · from £33,000
- Kitchen extensions · from £25,000
- Conservatory replacement extensions · from £18,500
- Flat roof extensions · from £19,500
- Utility and boot room extensions · from £13,000
- Timber frame extensions · from £19,500
- Side return extensions · from £16,500
- Home office extensions · from £14,500
- Orangery extensions · from £27,500
Free site visit
We visit your Briton Ferry home, measure up, talk through what you want and check the planning position.
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
With the design and specification agreed, you get a fixed written price and a start date.
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 Briton Ferry
How much does an extension cost in Briton Ferry?
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.
How long does an extension take in Briton Ferry?
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.
Do I need planning permission for an extension in Briton Ferry?
Not always. It depends on the size, position and your property's history. In Wales many single-storey rear extensions up to 4 m are permitted development.
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.
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 Briton Ferry
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.