Two-storey extensions in Ferndale
Planning a bigger home in Ferndale? Compare extension types and guide prices below, then book a free site visit.
Ferndale at a glance
- Postcode districts
- CF43
- Area
- Mid Glamorgan, Wales
- Price region
- Wales
- Nearest towns
- Rhondda (0.1 miles), Pentre (1.9 miles), Treorchy (2.5 miles), Tonypandy (2.7 miles)
- Distance to Rhondda
- about 0.1 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 Ferndale (CF43) and the places around it, including Rhondda (0.1 miles), Pentre (1.9 miles) and Treorchy.
Extensions available in Ferndale

Two-storey rear extensions
For homes in Ferndale: typical guide from £51,500.
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Two-storey side extensions
For homes in Ferndale: typical guide from £79,000.
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Two-storey wraparound extensions
Ferndale 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
Ferndale guide price from £29,000, Standard spec.
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First-floor extensions
For homes in Ferndale: typical guide from £23,000.
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Two-storey extensions for semi-detached houses
Ferndale guide price from £51,500, Standard spec.
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Two-storey extensions for detached houses
For homes in Ferndale: typical guide from £79,000.
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Kitchen extensions with bedrooms above
Design, approvals and build for Ferndale homes. Guide from £51,500 (before kitchen units).
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Extra bedroom and en-suite extensions
Design, approvals and build for Ferndale homes. Guide from £51,500 (plus en-suite).
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 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 Ferndale
Ferndale 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 Ferndale
Do you cover Ferndale?
Yes. We cover Ferndale (CF43) and the surrounding area, including Rhondda and Pentre. The first site visit is free.
What does a two-storey extension cost in Ferndale?
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 Ferndale do you cover?
Everywhere around it, including Rhondda (0.1 miles), Pentre (1.9 miles) and Treorchy (2.5 miles), and the rest of Mid Glamorgan.