Two-storey extensions in Treharris
Planning a bigger home in Treharris? Compare extension types and guide prices below, then book a free site visit.
Treharris at a glance
- Postcode districts
- CF46
- Area
- Mid Glamorgan, Wales
- Price region
- Wales
- Nearest towns
- Nelson (Mid Glamorgan) (1.2 miles), Abercynon (1.6 miles), Gelligaer (2.2 miles), Hengoed (3.4 miles)
- Distance to Rhondda
- about 6.1 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 Treharris (CF46) and the places around it, including Nelson (Mid Glamorgan) (1.2 miles), Abercynon (1.6 miles) and Gelligaer.
Extensions available in Treharris
Two-storey rear extensions
For homes in Treharris: typical guide from £51,500.
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Two-storey side extensions
Treharris guide price from £79,000, Standard spec.
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Two-storey wraparound extensions
Guide from £111,000 in Treharris, including VAT.
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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
Design, approvals and build for Treharris homes. Guide from £29,000.
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First-floor extensions
Treharris guide price from £23,000, Standard spec.
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Two-storey extensions for semi-detached houses
For homes in Treharris: typical guide from £51,500.
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Two-storey extensions for detached houses
For homes in Treharris: typical guide from £79,000.
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Kitchen extensions with bedrooms above
Our Wales guide starts at £51,500 (before kitchen units) for this type.
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Extra bedroom and en-suite extensions
Design, approvals and build for Treharris homes. Guide from £51,500 (plus en-suite).
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 Treharris, 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 Treharris
Treharris 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 Treharris
Do you cover Treharris?
Yes. We cover Treharris (CF46) and the surrounding area, including Nelson (Mid Glamorgan) and Abercynon. The first site visit is free.
What does a two-storey extension cost in Treharris?
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 Treharris do you cover?
Everywhere around it, including Nelson (Mid Glamorgan) (1.2 miles), Abercynon (1.6 miles) and Gelligaer (2.2 miles), and the rest of Mid Glamorgan.