Two-storey extensions in Builth Wells
From over-garage bedrooms to full wraparounds, we cover every kind of two-storey extension in Builth Wells.
Builth Wells at a glance
- Postcode districts
- LD2, LD4 and LD5
- Area
- Powys, Wales
- Price region
- Wales
- Nearest towns
- Llandrindod Wells (6.5 miles), Brecon (14.1 miles), Knighton (20.2 miles), Llanidloes (21.5 miles)
- Distance to Newtown
- about 25.8 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 Builth Wells (LD2, LD4 and LD5) and the places around it, including Llandrindod Wells (6.5 miles), Brecon (14.1 miles) and Knighton.
Extensions available in Builth Wells

Two-storey rear extensions
From £51,500 in Builth Wells. Free visit to firm it up.
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Two-storey side extensions
Our Wales guide starts at £79,000 for this type.
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Two-storey wraparound extensions
From £111,000 in Builth Wells. Free visit to firm it up.
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Part single, part two-storey extensions
For homes in Builth Wells: typical guide from £66,000.
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Extensions over a garage
Builth Wells guide price from £29,000, Standard spec.
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First-floor extensions
Design, approvals and build for Builth Wells homes. Guide from £23,000.
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Two-storey extensions for semi-detached houses
Design, approvals and build for Builth Wells homes. Guide from £51,500.
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Two-storey extensions for detached houses
Our Wales guide starts at £79,000 for this type.
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Kitchen extensions with bedrooms above
For homes in Builth Wells: typical guide from £51,500 (before kitchen units).
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Extra bedroom and en-suite extensions
Design, approvals and build for Builth Wells homes. Guide from £51,500 (plus en-suite).
Learn moreWhich type suits your house?
Rear, side, wraparound or over the garage: each adds space in a different way. For most houses in Powys, one or two of these will clearly suit the plot better than the rest, and we'll tell you which.
Also available in Powys
- 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 Builth Wells
Builth Wells 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 Builth Wells
Do you cover Builth Wells?
Yes. We cover Builth Wells (LD2, LD4 and LD5) and the surrounding area, including Llandrindod Wells and Brecon. The first site visit is free.
What does a two-storey extension cost in Builth Wells?
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 Builth Wells do you cover?
Everywhere around it, including Llandrindod Wells (6.5 miles), Brecon (14.1 miles) and Knighton (20.2 miles), and the rest of Powys.