Haverfordwest wraparound extensions, designed and built
Haverfordwest homeowners can use us for the whole wraparound extension project: survey, design, planning or permitted development checks, building regulations and the build itself.
- Guide price in HaverfordwestFrom £33,000 inc VAT
- PlanningUsually a planning application
- Build time14–20 weeks on site
- Postcode districtsSA61

What we take care of
- Foundations, drainage and any manhole relocation
- Roof with glazing along the side return
- Full internal finish or kitchen-ready shell
- Survey, design and 3D layout options
- Structural design for the corner and openings
- Householder planning application
Local to Haverfordwest
Our survey diary covers Haverfordwest, including SA61. Neighbouring towns we cover include Pembroke Dock (8 miles), Carmarthen (29 miles), Llanelli (36 miles), Ammanford (42 miles).
In Wales, terraced houses with rear offshoots are common in the towns, while detached houses and bungalows dominate in rural areas.
Guide prices for Haverfordwest
Labour and material costs vary across the UK, so for Haverfordwest we use our Wales factor (×0.93). The ranges include VAT and exclude design, structural and council fees.
Typical rates in Haverfordwest: £1,860 to £3,440 per m² including VAT, depending on specification.
| Size | Essential | Standard | Premium |
|---|---|---|---|
| Compact L-shape 18 m² | £33,000 – £40,500 | £38,500 – £49,000 | £48,500 – £62,000 |
| Medium L-shape 25 m² | £46,500 – £56,000 | £53,000 – £67,500 | £67,000 – £86,500 |
| Large L-shape 32 m² | £59,500 – £71,500 | £68,000 – £86,500 | £86,000 – £110,500 |
For a figure based on your own dimensions, use our guide-price tool.
Do I need planning permission in Haverfordwest?
In Wales a wraparound must satisfy both the rear and side extension limits to be permitted development, so most need 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 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).
What happens next
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
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
You receive a written, itemised price and programme. Nothing starts until you are happy with it.
Build and sign-off
We build it with one project manager, book the building control inspections and hand over the completion certificate.
Common questions in Haverfordwest
How long does a wraparound extension take to build in Haverfordwest?
On site, typically 14 to 20 weeks once approvals are in place. Before that, allow 8–16 weeks design and approvals.
Do I need building regulations approval in Haverfordwest?
Yes. Almost every extension needs it, whatever the planning route. We prepare the drawings and book the inspections.
Will my neighbours in Haverfordwest be involved?
If a planning application is needed, the council notifies neighbours. If the work is on or near a shared boundary, party wall notices may also be needed.
How much does a wraparound extension cost?
Our guide range is about £1,860 to £3,440 per m² including VAT. A 25 m² standard-spec wraparound typically lands around £53,000 to £67,500 in Haverfordwest before design and council fees.
Will I need to move a drain?
Often. Side returns frequently contain a manhole or a shared drain. Building near or over a public sewer needs the water company’s consent in England and Wales, which we arrange.
Book a free site visit in Haverfordwest
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.