Two-storey extensions in Brecon
Planning a bigger home in Brecon? Compare extension types and guide prices below, then book a free site visit.
Brecon at a glance
- Postcode districts
- LD3
- Area
- Powys, Wales
- Price region
- Wales
- Nearest towns
- Brynmawr (13.4 miles), Tredegar (13.4 miles), Rhymney (13.6 miles), Merthyr Tydfil (13.7 miles)
- Distance to Newtown
- about 39.6 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.
Around Brecon we also work in Brynmawr, Tredegar and Rhymney, and across the rest of Powys. Postcode district in and near Brecon: LD3.
Extensions available in Brecon

Two-storey rear extensions
For homes in Brecon: typical guide from £51,500.
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Two-storey side extensions
Guide from £79,000 in Brecon, including VAT.
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Two-storey wraparound extensions
Brecon guide price from £111,000, Standard spec.
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Part single, part two-storey extensions
Brecon guide price from £66,000, Standard spec.
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Extensions over a garage
For homes in Brecon: typical guide from £29,000.
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First-floor extensions
Our Wales guide starts at £23,000 for this type.
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Two-storey extensions for semi-detached houses
Design, approvals and build for Brecon 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
From £51,500 (before kitchen units) in Brecon. Free visit to firm it up.
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Extra bedroom and en-suite extensions
Our Wales guide starts at £51,500 (plus en-suite) for this type.
Learn moreWhich type suits your house?
Which type suits your house in Brecon 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 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 Brecon
Brecon 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 Brecon
Do you cover Brecon?
Yes. We cover Brecon (LD3) and the surrounding area, including Brynmawr and Tredegar. The first site visit is free.
What does a two-storey extension cost in Brecon?
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 Brecon do you cover?
Everywhere around it, including Brynmawr (13.4 miles), Tredegar (13.4 miles) and Rhymney (13.6 miles), and the rest of Powys.