Two-storey extensions in Haverfordwest
Need more room in Haverfordwest? Two-storey and first-floor extensions add bedrooms and living space without moving. Here's everything we offer locally.
Haverfordwest at a glance
- Postcode districts
- SA61, SA62 and SA63
- Area
- Dyfed, Wales
- Price region
- Wales
- Nearest towns
- Steynton (5.4 miles), Neyland (6.4 miles), Milford Haven (6.7 miles), Pembroke Dock (7.7 miles)
- Distance to Llanelli
- about 35.5 miles
- Approvals
- Two-storey rear: ground floor up to 4 m, first floor up to 3 m and 10.5 m from the rear boundary. Some two-storey side extensions can be permitted development.
We cover postcode districts SA61, SA62 and SA63 in and around Haverfordwest, along with neighbouring Steynton, Neyland and Milford Haven.
Extensions available in Haverfordwest

Two-storey rear extensions
From £51,500 in Haverfordwest. Free visit to firm it up.
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Two-storey side extensions
Design, approvals and build for Haverfordwest homes. Guide from £79,000.
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Two-storey wraparound extensions
Haverfordwest guide price from £111,000, Standard spec.
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Part single, part two-storey extensions
Our Wales guide starts at £66,000 for this type.
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Extensions over a garage
Design, approvals and build for Haverfordwest homes. Guide from £29,000.
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First-floor extensions
Haverfordwest guide price from £23,000, Standard spec.
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Two-storey extensions for semi-detached houses
For homes in Haverfordwest: typical guide from £51,500.
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Two-storey extensions for detached houses
Guide from £79,000 in Haverfordwest, including VAT.
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Kitchen extensions with bedrooms above
Haverfordwest guide price from £51,500 (before kitchen units), Standard spec.
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Extra bedroom and en-suite extensions
Guide from £51,500 (plus en-suite) in Haverfordwest, including VAT.
Learn moreWhich type suits your house?
Which type suits your house in Haverfordwest depends mostly on where you have room. A deep garden points to a rear extension; space beside the house points to a side or over-garage extension; a house that already has a single-storey extension can often take a first floor on top.
Also available in Dyfed
- Two-storey front extensions
- Two-storey extensions for end-of-terrace houses
- Two-storey annexe extensions
- Garage conversions with a room above
- Two-storey extension plans and drawings
- Planning permission for two-storey extensions
- Structural engineering for two-storey extensions
- Building regulations for two-storey extensions
- Party wall notices for extensions
- Design and build two-storey extensions
Rules for Haverfordwest
Haverfordwest is in Wales. Two-storey rear: ground floor up to 4 m, first floor up to 3 m and 10.5 m from the rear boundary. Some two-storey side extensions can be permitted development. Householder planning application: £585. Councils normally decide householder applications within 8 weeks.
The full Wales rules explained
Questions about extensions in Haverfordwest
Do you cover Haverfordwest?
Yes. We cover Haverfordwest (SA61, SA62 and SA63) and the surrounding area, including Steynton and Neyland. The first site visit is free.
What does a two-storey extension cost in Haverfordwest?
Using our Wales guide, a two-storey rear extension with a 4 m × 3.5 m footprint on two floors (28 m² of new floor space) is about £51,500–£69,500 including VAT. An extension over a garage is about £29,000–£42,000.
Which other places near Haverfordwest do you cover?
Everywhere around it, including Steynton (5.4 miles), Neyland (6.4 miles) and Milford Haven (6.7 miles), and the rest of Dyfed.