Haverfordwest, West Wales
Terraced house rear extension in Haverfordwest
Rear and side return extensions for terraces, with access through the house and two neighbours. If you live in Haverfordwest and want to know what a terraced house rear extension would cost and whether it needs planning, start with the online guide price or a free site visit.
Haverfordwest and its postcode districts SA61 are part of our West Wales coverage. Terraced streets make up much of the housing in parts of West Wales, and most rear extensions here go in without side access.
Book a free site visit
Tell us about the house and we'll call to arrange a free, no-obligation visit.
How much does a terraced house rear extension cost in Haverfordwest?
A terraced house rear extension in Haverfordwest is priced at £1,910–£3,070 per square metre including VAT as a guide, before kitchen fit-out and fees. Prices in Wales sit below our West Midlands baseline; sloping sites are the main variable.
| Size | Guide price inc VAT |
|---|---|
| 3 m wide × 4.5 m deep (13.5 m²) | £25,500–£41,500 |
| 3 m wide × 6 m deep (18 m²) | £34,500–£55,000 |
These are guide ranges; the written quote after the survey is the figure that counts.
Do you need planning permission for a terraced house rear extension in Haverfordwest?
Whether your terraced house rear extension in Haverfordwest needs a planning application depends on its size, your house and any local restrictions.
Welsh permitted development allows a single-storey rear extension of up to 4 metres in depth and 4 metres in height, subject to boundary and garden-coverage limits. There is no larger-extension prior approval scheme in Wales.
In Wales, as in England, the Party Wall etc. Act 1996 requires notice to neighbours before work to a shared wall or excavation near their foundations.
Conservation areas, National Parks and National Landscapes restrict permitted development in Wales, and listed buildings need listed building consent. At the first visit we measure what is there now and tell you which route fits: permitted development or a householder planning application.
What are homes in Haverfordwest like to extend?
Haverfordwest has Victorian terraces near the centre and semis further out. Welsh permitted development allows up to 4 metres at the rear for many houses.
How a terraced house rear extension in Haverfordwest comes together
Survey visit
We visit free of charge, measure up, check access, drainage and neighbours' extensions, and note what you want the room to do.
Design and guide price
Two or three layout options with a guide price for each, so you choose the design knowing what it costs.
Approvals
Permitted development check or householder planning application, then Building Regulations drawings to the Welsh Approved Documents and structural calculations, plus party wall notices where they apply.
Fixed price and build
A written price for the agreed design, a start date and a named contact through the build, ending with the building control completion certificate.
Terraced house rear extensions near Haverfordwest
Neighbouring places we cover include Milford Haven (6.7 miles) and Carmarthen (28.6 miles).
- Terraced house rear extension in Milford Haven
- Terraced house rear extension in Carmarthen
- Terraced house rear extension in Llanelli
- Terraced house rear extension in Gorseinon
- Terraced house rear extension in Ammanford
Other work in Haverfordwest:
FAQ
Terraced house rear extension questions in Haverfordwest
Will I need a structural engineer?
Yes for the beam over the new opening and usually the foundations; we arrange them and their calculations go to building control.
How long does a rear extension take to build in Haverfordwest?
Most single-storey rear extensions take 10 to 16 weeks on site and two-storey extensions 16 to 26 weeks, after design and approvals.
Will my terrace be in a conservation area?
Many Victorian terraces are. Your council's map shows it; we check at the survey.
Do I need planning permission for a rear extension in Haverfordwest?
Often not for a single-storey rear extension of up to 4 metres under Welsh permitted development. Wales has no prior approval route for deeper extensions.
Can you match the brick or stone on my Haverfordwest house?
We source the closest match and show you samples before ordering; reclaimed materials are often the best match on older houses.
What postcode areas do you cover around Haverfordwest?
Including SA61, and the surrounding West Wales area.