Timber frame extensions across Briton Ferry
Briton Ferry homeowners can use us for the whole timber frame extension project: survey, design, planning or permitted development checks, building regulations and the build itself.
- Guide price in Briton FerryFrom £19,500 inc VAT
- PlanningWelsh permitted development rules (rear up to 4 m)
- Build time8–14 weeks on site
- Postcode districtsSA12

What is included
- Breathable wall build-up with insulation
- Fire and acoustic details where needed
- Cladding, render or brick slip finish
- Foundations, often lighter than masonry
- Frame design and structural calculations
Planning and approvals 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.
The planning position for a specific Briton Ferry address depends on its history and any designations, which is why we check it at the first visit.
Building over or within 3 m of a public sewer needs the water company's consent before the foundations go in.
Applications are decided by the local planning authority (your county or county borough council, or the national park authority).
Timber frame extension prices in Briton Ferry
For Briton Ferry we adjust our national guide rates by ×0.93, the factor we use for Wales. Figures include VAT; your written quote after the survey replaces them.
Typical rates in Briton Ferry: £1,630 to £3,160 per m² including VAT, depending on specification.
| Size | Essential | Standard | Premium |
|---|---|---|---|
| 3 m × 4 m 12 m² | £19,500 – £23,500 | £22,500 – £30,000 | £29,000 – £38,000 |
| 4 m × 5 m 20 m² | £32,500 – £39,500 | £38,000 – £49,500 | £48,000 – £63,500 |
| 5 m × 6 m 30 m² | £48,500 – £59,000 | £57,000 – £74,000 | £72,500 – £95,000 |
For a figure based on your own dimensions, use our guide-price tool.
Local to Briton Ferry
Postcode districts we cover around Briton Ferry include SA12. Nearby, we also take on projects in Neath (2 miles), Clydach (5 miles), Swansea (5 miles), Gorseinon (10 miles).
Maesteg, in Mid Glamorgan, is roughly 7 miles from Briton Ferry and also on our list. In Wales, terraced houses with rear offshoots are common in the towns, while detached houses and bungalows dominate in rural areas.
Our process, step by step
Site visits are free and there is no obligation. Where drawings are needed, the design stage is priced in writing before it starts.
Free site visit
It starts with a visit to your house to measure, check access and talk through ideas and budget.
Design and approvals
Drawings are prepared and agreed with you, then submitted for the right planning route and building regulations approval.
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
The build is managed from start to finish, inspected at each stage and signed off on completion.
Timber frame extension questions answered
Can I see a price before committing to anything?
Yes. The guide prices on this page are adjusted for Briton Ferry, and the guide-price tool gives a range for your own size. After the survey you get a written price before anything is agreed.
How long does a timber frame extension take to build in Briton Ferry?
On site, typically 8 to 14 weeks once approvals are in place. Before that, allow 4–12 weeks design and approvals.
Do I need building regulations approval in Briton Ferry?
Yes. Almost every extension needs it, whatever the planning route. We prepare the drawings and book the inspections.
Does a timber frame extension need planning permission?
The same planning rules apply as for any extension. If the cladding looks different from the house, permitted development’s matching-materials condition may mean an application is needed.
Is timber frame cheaper than brick?
It is similar overall. The frame can save time on site, but the cladding choice has a big effect on cost. Our guide range is about £1,630 to £3,160 per m² including VAT.
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.