Two-storey extensions in Rhondda
Planning a bigger home in Rhondda? Compare extension types and guide prices below, then book a free site visit.
Rhondda at a glance
- Postcode districts
- CF43
- Area
- Mid Glamorgan, Wales
- Price region
- Wales
- Nearest towns
- Ferndale (0.1 miles), Pentre (1.8 miles), Treorchy (2.4 miles), Tonypandy (2.6 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 Rhondda we also work in Ferndale, Pentre and Treorchy, and across the rest of Mid Glamorgan. Postcode district in and near Rhondda: CF43.
Extensions available in Rhondda

Two-storey rear extensions
For homes in Rhondda: typical guide from £51,500.
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Two-storey side extensions
Design, approvals and build for Rhondda homes. Guide from £79,000.
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Two-storey wraparound extensions
Our Wales guide starts at £111,000 for this type.
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Part single, part two-storey extensions
Guide from £66,000 in Rhondda, including VAT.
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Extensions over a garage
For homes in Rhondda: 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
Guide from £51,500 in Rhondda, including VAT.
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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 Rhondda. Free visit to firm it up.
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Extra bedroom and en-suite extensions
Design, approvals and build for Rhondda homes. Guide from £51,500 (plus en-suite).
Learn moreWhich type suits your house?
Which type suits your house in Rhondda 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 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 Rhondda
Rhondda 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 Rhondda
Do you cover Rhondda?
Yes. We cover Rhondda (CF43) and the surrounding area, including Ferndale and Pentre. The first site visit is free.
What does a two-storey extension cost in Rhondda?
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 Rhondda do you cover?
Everywhere around it, including Ferndale (0.1 miles), Pentre (1.8 miles) and Treorchy (2.4 miles), and the rest of Mid Glamorgan.