Two-storey extensions in Clydach
Everything for a two-storey extension in Clydach, in one place: types, guide prices for Wales, the approval rules in Wales and how to get started.
Clydach at a glance
- Postcode districts
- SA6, SA7 and SA8
- Area
- Swansea and Neath Port Talbot, Wales
- Price region
- Wales
- Nearest towns
- Neath (4.3 miles), Swansea (4.7 miles), Briton Ferry (5 miles), Gorseinon (6.1 miles)
- Distance to Swansea
- about 4.7 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 Clydach (SA6, SA7 and SA8) and the places around it, including Neath (4.3 miles), Swansea (4.7 miles) and Briton Ferry.
Extensions available in Clydach

Two-storey rear extensions
Design, approvals and build for Clydach homes. Guide from £51,500.
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Two-storey side extensions
Clydach guide price from £79,000, Standard spec.
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Two-storey wraparound extensions
From £111,000 in Clydach. Free visit to firm it up.
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Part single, part two-storey extensions
Guide from £66,000 in Clydach, including VAT.
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Extensions over a garage
Our Wales guide starts at £29,000 for this type.
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First-floor extensions
From £23,000 in Clydach. Free visit to firm it up.
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Two-storey extensions for semi-detached houses
Guide from £51,500 in Clydach, including VAT.
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Two-storey extensions for detached houses
Design, approvals and build for Clydach homes. Guide from £79,000.
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Kitchen extensions with bedrooms above
Guide from £51,500 (before kitchen units) in Clydach, including VAT.
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Extra bedroom and en-suite extensions
Guide from £51,500 (plus en-suite) in Clydach, including VAT.
Learn moreWhich type suits your house?
Rear and side extensions suit most semi-detached and detached houses with room around them. Terraced and town-centre homes can take a two-storey extension too, with more care over neighbours, light and access.
Also available in Swansea and Neath Port Talbot
- 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 Clydach
Clydach 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 Clydach
Do you cover Clydach?
Yes. We cover Clydach (SA6, SA7 and SA8) and the surrounding area, including Neath and Swansea. The first site visit is free.
What does a two-storey extension cost in Clydach?
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 Clydach do you cover?
Everywhere around it, including Neath (4.3 miles), Swansea (4.7 miles) and Briton Ferry (5 miles), and the rest of Swansea and Neath Port Talbot.