Deeside, North Wales
Terraced house rear extension in Deeside
Rear and side return extensions for terraces, with access through the house and two neighbours. We design, get the approvals for and build rear extensions for terraced houses in Deeside and the surrounding area, with one contract from the first survey to building control sign-off.
Deeside and its postcode districts CH5 are part of our North Wales coverage. Terraced streets make up much of the housing in parts of North Wales, and most rear extensions here go in without side access.
Book a free site visit
Tell us about the house and we'll call to arrange a free, no-obligation visit.
How much does a terraced house rear extension cost in Deeside?
A terraced house rear extension in Deeside is priced at £1,910–£3,070 per square metre including VAT as a guide, before kitchen fit-out and fees. Prices in Wales sit below our West Midlands baseline; sloping sites are the main variable.
| Size | Guide price inc VAT |
|---|---|
| 3 m wide × 4.5 m deep (13.5 m²) | £25,500–£41,500 |
| 3 m wide × 6 m deep (18 m²) | £34,500–£55,000 |
These are guide ranges; the written quote after the survey is the figure that counts.
Do you need planning permission for a terraced house rear extension in Deeside?
The planning route for a terraced house rear extension in Deeside is set by Wales's householder rules and your council.
Welsh permitted development allows a single-storey rear extension of up to 4 metres in depth and 4 metres in height, subject to boundary and garden-coverage limits. There is no larger-extension prior approval scheme in Wales.
In Wales, as in England, the Party Wall etc. Act 1996 requires notice to neighbours before work to a shared wall or excavation near their foundations.
Conservation areas, National Parks and National Landscapes restrict permitted development in Wales, and listed buildings need listed building consent. We check your house's planning history and any conservation area before drawing, so the route is clear before you spend on plans.
What are homes in Deeside like to extend?
Older terraces near the centre and post-war semis further out are typical of Deeside. Sloping sites are common in Wales, so floor levels and retaining walls are designed at the start.
How a terraced house rear extension in Deeside comes together
Free site visit
We measure the house and garden, look at the back wall, drainage and boundaries, and talk through what you want from the space.
Design and guide price
Two or three layout options with a guide price for each, so you choose the design knowing what it costs.
Paperwork handled
Planning or permitted development, Building Regulations approval, structural design and party wall notices are all handled by us.
Written price, then build
Once the design and approvals are in place, you get a fixed written price and programme, and we build through to sign-off.
Terraced house rear extensions near Deeside
From Deeside, the nearest places we also cover are Buckley (3.0 miles) and Blacon (4.7 miles).
- Terraced house rear extension in Buckley
- Terraced house rear extension in Blacon
- Terraced house rear extension in Mold
- Terraced house rear extension in Flint
- Terraced house rear extension in Neston
Other work in Deeside:
FAQ
Terraced house rear extension questions in Deeside
Do you handle building control in Deeside?
Yes. We apply to the council or a registered approver under the Welsh regulations and hand over the completion certificate.
How long does a rear extension take to build in Deeside?
Most single-storey rear extensions take 10 to 16 weeks on site and two-storey extensions 16 to 26 weeks, after design and approvals.
Will my terrace be in a conservation area?
Many Victorian terraces are. Your council's map shows it; we check at the survey.
Can I live at home while the extension is built?
Usually yes. Most of the work is outside until the back wall is opened near the end, and that stage is screened off.
How much does a terraced house rear extension cost in Deeside?
As a guide, £1,910–£3,070 per square metre including VAT for a standard specification. For example, 3 m wide × 4.5 m deep (13.5 m²): about £25,500–£41,500 at that rate. Your written price follows the survey.
Will I need a structural engineer?
Yes for the beam over the new opening and usually the foundations; we arrange them and their calculations go to building control.