Two-storey extensions in Whitchurch (Cardiff and the Vale of Glamorgan)
Need more room in Whitchurch (Cardiff and the Vale of Glamorgan)? Two-storey and first-floor extensions add bedrooms and living space without moving. Here's everything we offer locally.
Whitchurch (Cardiff and the Vale of Glamorgan) at a glance
- Postcode districts
- CF14
- Area
- Cardiff and the Vale of Glamorgan, Wales
- Price region
- Wales
- Nearest towns
- Rhiwbina (1.2 miles), Llandaff (1.3 miles), Thornhill (2.4 miles), Cardiff (2.8 miles)
- Distance to Cardiff
- about 2.8 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 CF14 in and around Whitchurch (Cardiff and the Vale of Glamorgan), along with neighbouring Rhiwbina, Llandaff and Thornhill.
Extensions available in Whitchurch (Cardiff and the Vale of Glamorgan)

Two-storey rear extensions
Design, approvals and build for Whitchurch (Cardiff and the Vale of Glamorgan) homes. 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
From £111,000 in Whitchurch (Cardiff and the Vale of Glamorgan). Free visit to firm it up.
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Part single, part two-storey extensions
From £66,000 in Whitchurch (Cardiff and the Vale of Glamorgan). Free visit to firm it up.
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Extensions over a garage
Whitchurch (Cardiff and the Vale of Glamorgan) guide price from £29,000, Standard spec.
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First-floor extensions
From £23,000 in Whitchurch (Cardiff and the Vale of Glamorgan). Free visit to firm it up.
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Two-storey extensions for semi-detached houses
Design, approvals and build for Whitchurch (Cardiff and the Vale of Glamorgan) homes. Guide from £51,500.
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Two-storey extensions for detached houses
Guide from £79,000 in Whitchurch (Cardiff and the Vale of Glamorgan), including VAT.
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Kitchen extensions with bedrooms above
Whitchurch (Cardiff and the Vale of Glamorgan) guide price from £51,500 (before kitchen units), Standard spec.
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Extra bedroom and en-suite extensions
For homes in Whitchurch (Cardiff and the Vale of Glamorgan): typical guide from £51,500 (plus en-suite).
Learn moreWhich type suits your house?
Which type suits your house in Whitchurch (Cardiff and the Vale of Glamorgan) 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 Cardiff and the Vale of 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 Whitchurch (Cardiff and the Vale of Glamorgan)
Whitchurch (Cardiff and the Vale of 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 Whitchurch (Cardiff and the Vale of Glamorgan)
Do you cover Whitchurch (Cardiff and the Vale of Glamorgan)?
Yes. We cover Whitchurch (Cardiff and the Vale of Glamorgan) (CF14) and the surrounding area, including Rhiwbina and Llandaff. The first site visit is free.
What does a two-storey extension cost in Whitchurch (Cardiff and the Vale of 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 Whitchurch (Cardiff and the Vale of Glamorgan) do you cover?
Everywhere around it, including Rhiwbina (1.2 miles), Llandaff (1.3 miles) and Thornhill (2.4 miles), and the rest of Cardiff and the Vale of Glamorgan.