Two-storey extensions in Glanamman
Everything for a two-storey extension in Glanamman, in one place: types, guide prices for Wales, the approval rules in Wales and how to get started.
Glanamman at a glance
- Postcode districts
- SA18
- Area
- Dyfed, Wales
- Price region
- Wales
- Nearest towns
- Ammanford (2.4 miles), Brynamman (2.8 miles), Cross Hands (6.6 miles), Ystalyfera (6.9 miles)
- Distance to Llanelli
- about 12.7 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 postcode district SA18 in and around Glanamman, along with neighbouring Ammanford, Brynamman and Cross Hands.
Extensions available in Glanamman

Two-storey rear extensions
Our Wales guide starts at £51,500 for this type.
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Two-storey side extensions
For homes in Glanamman: typical guide from £79,000.
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Two-storey wraparound extensions
For homes in Glanamman: typical guide from £111,000.
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Part single, part two-storey extensions
Design, approvals and build for Glanamman homes. Guide from £66,000.
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Extensions over a garage
Glanamman guide price from £29,000, Standard spec.
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First-floor extensions
From £23,000 in Glanamman. Free visit to firm it up.
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Two-storey extensions for semi-detached houses
From £51,500 in Glanamman. Free visit to firm it up.
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Two-storey extensions for detached houses
Glanamman guide price from £79,000, Standard spec.
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Kitchen extensions with bedrooms above
For homes in Glanamman: typical guide from £51,500 (before kitchen units).
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Extra bedroom and en-suite extensions
Design, approvals and build for Glanamman homes. Guide from £51,500 (plus en-suite).
Learn moreWhich type suits your house?
Which type suits your house in Glanamman 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 Glanamman
Glanamman 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 Glanamman
Do you cover Glanamman?
Yes. We cover Glanamman (SA18) and the surrounding area, including Ammanford and Brynamman. The first site visit is free.
What does a two-storey extension cost in Glanamman?
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 Glanamman do you cover?
Everywhere around it, including Ammanford (2.4 miles), Brynamman (2.8 miles) and Cross Hands (6.6 miles), and the rest of Dyfed.