Two-storey extensions in Nelson (Mid Glamorgan)
Need more room in Nelson (Mid Glamorgan)? Two-storey and first-floor extensions add bedrooms and living space without moving. Here's everything we offer locally.
Nelson (Mid Glamorgan) at a glance
- Postcode districts
- CF46
- Area
- Mid Glamorgan, Wales
- Price region
- Wales
- Nearest towns
- Treharris (1.2 miles), Gelligaer (1.4 miles), Abercynon (1.9 miles), Hengoed (2.3 miles)
- Distance to Rhondda
- about 7.1 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 CF46 in and around Nelson (Mid Glamorgan), along with neighbouring Treharris, Gelligaer and Abercynon.
Extensions available in Nelson (Mid Glamorgan)

Two-storey rear extensions
For homes in Nelson (Mid Glamorgan): typical guide from £51,500.
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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
Nelson (Mid Glamorgan) 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
For homes in Nelson (Mid Glamorgan): typical guide from £29,000.
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First-floor extensions
From £23,000 in Nelson (Mid Glamorgan). Free visit to firm it up.
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Two-storey extensions for semi-detached houses
From £51,500 in Nelson (Mid Glamorgan). Free visit to firm it up.
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Two-storey extensions for detached houses
From £79,000 in Nelson (Mid Glamorgan). Free visit to firm it up.
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Kitchen extensions with bedrooms above
From £51,500 (before kitchen units) in Nelson (Mid Glamorgan). Free visit to firm it up.
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Extra bedroom and en-suite extensions
Nelson (Mid Glamorgan) guide price from £51,500 (plus en-suite), Standard spec.
Learn moreWhich type suits your house?
If you're not sure which type fits, that's what the free visit is for. We'll sketch the realistic options for your house in Nelson (Mid Glamorgan), with a rough idea of the approval route and cost for each.
Also available in Mid Glamorgan
- 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 Nelson (Mid Glamorgan)
Nelson (Mid Glamorgan) 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 Nelson (Mid Glamorgan)
Do you cover Nelson (Mid Glamorgan)?
Yes. We cover Nelson (Mid Glamorgan) (CF46) and the surrounding area, including Treharris and Gelligaer. The first site visit is free.
What does a two-storey extension cost in Nelson (Mid Glamorgan)?
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 Nelson (Mid Glamorgan) do you cover?
Everywhere around it, including Treharris (1.2 miles), Gelligaer (1.4 miles) and Abercynon (1.9 miles), and the rest of Mid Glamorgan.