Extensions in Deeside: design, planning and build
Every type of house extension in Deeside, from single-storey kitchen extensions to two-storey additions, side returns and orangeries. We design, handle the approvals and build.
- Postcode districtsCH5
- Price regionWales (×0.93)
- Planning rulesWales
- Site visitFree, no obligation
Choosing the right extension in Deeside
In Wales, terraced houses with rear offshoots are common in the towns, while detached houses and bungalows dominate in rural areas.
The types we would usually look at first for a home in Deeside are single-storey rear extensions, side return extensions and pitched roof extensions, depending on the garden and how the house is laid out.
Covering Deeside and nearby
Our survey diary covers Deeside, including CH5. Nearby, we also take on projects in Hawarden (1 mile), Buckley (3 miles), Flint (5 miles), Wrexham (11 miles), Rhosllannerchrugog (13 miles). Just over the Powys border, Welshpool is about 38 miles away.
Guide prices for Deeside
Every figure below is a guide for Deeside, adjusted for Wales build costs (×0.93) and including VAT. Design and council fees are shown separately on each page.
| Extension type | Example size | Standard spec (inc VAT) |
|---|---|---|
| Side return extensions | 11 m² | £24,500 – £31,000 |
| Wraparound extensions | 25 m² | £53,000 – £67,500 |
| Kitchen extensions | 20 m² | £39,000 – £49,500 |
| Orangery extensions | 16 m² | £41,500 – £52,500 |
| Single-storey rear extensions | 20 m² | £38,000 – £48,500 |
| Double-storey extensions | 32 m² | £53,500 – £70,000 |
Approvals for an extension in Deeside
In Wales a single-storey rear extension can usually project up to 4 m beyond the rear wall without a planning application, if it is no more than 4 m high, keeps eaves to 3 m and overall height to 4 m within 2 m of a boundary, and covers no more than half the land around the original house. Wales has no larger home extension prior approval scheme.
In Wales a rear extension of more than one storey can be permitted development only if the ground floor projects no more than 4 m, the upper floor no more than 3 m, it stays at least 10.5 m from the rear boundary and it is not in a conservation area, national park, National Landscape or World Heritage Site. Anything larger needs a planning application to the council.
In a conservation area, national park, National Landscape or World Heritage Site the permitted development limits are tighter (no side or two-storey extensions without an application). Listed homes need listed building consent, and if permitted development rights have been removed, any extension needs an application.
Building regulations approval is separate from planning. Wales has its own building regulations and approved documents; the council or a registered building control approver checks the plans, inspects the work and issues a completion certificate.
Applications are decided by the local planning authority (your county or county borough council, or the national park authority).
Choose an extension type
- Building regulations for extensions · from £800
- Extensions over a garage · from £22,000
- Side return extensions · from £16,500
- Wraparound extensions · from £33,000
- Timber frame extensions · from £19,500
- Kitchen extensions · from £25,000
- Glass box extensions · from £27,500
- Orangery extensions · from £27,500
- Utility and boot room extensions · from £13,000
- Planning permission for extensions · from £300
- Bungalow extensions · from £24,000
- Porch extensions · from £3,700
- Annexe extensions · from £51,000
- Side extensions · from £20,000
- Home office extensions · from £14,500
- Flat roof extensions · from £19,500
- Conservatory replacement extensions · from £18,500
- Bedroom extensions · from £24,000
- Single-storey rear extensions · from £19,500
- Double-storey extensions · from £35,000
- Extension plans and drawings · from £1,100
- Pitched roof extensions · from £20,500
Free site visit
We visit your Deeside home, measure up, talk through what you want and check the planning position.
Design and approvals
We draw the design, agree it with you and handle planning or permitted development checks and building regulations.
Fixed written price
We confirm the build price in writing, based on the approved drawings and the finishes you have chosen.
Build and sign-off
Our team builds the extension, keeps you updated weekly and finishes with building control sign-off.
Questions about extensions in Deeside
How much does an extension cost in Deeside?
Using our Wales factor (×0.93), a standard-spec single-storey extension of 20 m² is a guide £38,000 to £48,500 including VAT, and a 32 m² two-storey extension £53,500 to £70,000. Your written price follows the survey.
Do I need planning permission for an extension in Deeside?
Not always. It depends on the size, position and your property's history. In Wales many single-storey rear extensions up to 4 m are permitted development.
How long does an extension take in Deeside?
Usually 2 to 4 months of design and approvals, then 10 to 16 weeks on site for a single-storey extension or 16 to 24 weeks for two storeys.
Do you handle building regulations?
Yes. We prepare the drawings and calculations, submit them and book inspections, ending with a completion certificate.
Do you cover all of Deeside?
Yes, including the surrounding parts of Clwyd. Site visits are free and there is no obligation.
Book a free site visit in Deeside
We will measure up, check the planning position and give you honest guide figures.
- Free, no-obligation site visit
- Planning route checked before you spend on drawings
- Written price once the design is agreed
- Building control sign-off at the end
Prefer to talk? Call 0800 088 6341 or .
Book a free site visit
Tell us a little about the project and we will arrange a time.