Two-storey extensions in Holywell (Clwyd)
Need more room in Holywell (Clwyd)? Two-storey and first-floor extensions add bedrooms and living space without moving. Here's everything we offer locally.
Holywell (Clwyd) at a glance
- Postcode districts
- CH8
- Area
- Clwyd, Wales
- Price region
- Wales
- Nearest towns
- Flint (4.5 miles), Mold (8.3 miles), Prestatyn (8.6 miles), Deeside (9.4 miles)
- Distance to Wrexham
- about 18.6 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.
We cover Holywell (Clwyd) (CH8) and the places around it, including Flint (4.5 miles), Mold (8.3 miles) and Prestatyn.
Extensions available in Holywell (Clwyd)

Two-storey rear extensions
For homes in Holywell (Clwyd): 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
Holywell (Clwyd) 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
Design, approvals and build for Holywell (Clwyd) homes. Guide from £29,000.
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First-floor extensions
Design, approvals and build for Holywell (Clwyd) homes. Guide from £23,000.
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Two-storey extensions for semi-detached houses
Our Wales guide starts at £51,500 for this type.
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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
Holywell (Clwyd) guide price from £51,500 (before kitchen units), Standard spec.
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Extra bedroom and en-suite extensions
Design, approvals and build for Holywell (Clwyd) 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 Holywell (Clwyd), with a rough idea of the approval route and cost for each.
Also available in Clwyd
- 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 Holywell (Clwyd)
Holywell (Clwyd) 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 Holywell (Clwyd)
Do you cover Holywell (Clwyd)?
Yes. We cover Holywell (Clwyd) (CH8) and the surrounding area, including Flint and Mold. The first site visit is free.
What does a two-storey extension cost in Holywell (Clwyd)?
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 Holywell (Clwyd) do you cover?
Everywhere around it, including Flint (4.5 miles), Mold (8.3 miles) and Prestatyn (8.6 miles), and the rest of Clwyd.