Colwyn Bay, North Wales
Wraparound extension in Colwyn Bay
An L-shaped extension that fills the side return and runs across the back. We design, get the approvals for and build wraparound extensions in Colwyn Bay and the surrounding area, with one contract from the first survey to building control sign-off.
We cover Colwyn Bay (LL28, LL29 and LL31) as part of our North Wales work. In Colwyn Bay we usually draw the wraparound and a simpler rear-only option side by side, so the planning risk and cost difference are clear.
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 wraparound extension cost in Colwyn Bay?
In Colwyn Bay, our guide for a wraparound extension is £2,050–£3,350 per square metre including VAT for a standard specification. Prices in Wales sit below our West Midlands baseline; sloping sites are the main variable.
| Size | Guide price inc VAT |
|---|---|
| L-shaped, about 22 m² of new floor | £45,000–£73,500 |
| L-shaped, about 30 m² of new floor | £61,500–£100,500 |
We put a fixed price in writing once the design is agreed, and explain any provisional sums such as foundations.
Do you need planning permission for a wraparound extension in Colwyn Bay?
Planning for a wraparound extension in Colwyn Bay follows the Welsh householder rules.
Welsh side-extension rules limit a single-storey side addition to 4 metres high and a 50% increase in the width of the original house, with tighter limits in conservation areas. Wraparounds usually need a planning application.
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 Colwyn Bay like to extend?
Colwyn Bay has Victorian terraces near the centre and semis further out. Welsh permitted development allows up to 4 metres at the rear for many houses.
How a wraparound extension in Colwyn Bay comes together
Look round and measure
A free visit to see the back of the house, measure it, check the drains and boundaries and hear what you need.
Options and costs
We draw layout options and price each one, so the budget shapes the design rather than surprising you later.
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.
Wraparound extensions near Colwyn Bay
From Colwyn Bay, the nearest places we also cover are Llandudno (4.8 miles) and Abergele (6.0 miles).
- Wraparound extension in Llandudno
- Wraparound extension in Abergele
- Wraparound extension in Rhyl
- Wraparound extension in Prestatyn
- Wraparound extension in Bangor
Other work in Colwyn Bay:
FAQ
Wraparound extension questions in Colwyn Bay
Do I need a party wall agreement?
In Wales, usually yes if the extension is on or near a shared boundary or close to a neighbour's foundations. We serve the notices.
Do you handle building control in Colwyn Bay?
Yes. We apply to the council or a registered approver under the Welsh regulations and hand over the completion certificate.
What roof suits a wraparound?
A flat roof with a lantern, a standing-seam pitched roof or a glazed roof over the side leg. The choice usually follows the first-floor windows above.
What postcode areas do you cover around Colwyn Bay?
Including LL28, LL29 and LL31, and the surrounding North Wales area.
Do I need planning permission for a rear extension in Colwyn Bay?
Often not for a single-storey rear extension of up to 4 metres under Welsh permitted development. Wales has no prior approval route for deeper extensions.
Can I get a price without a visit?
Our online guide-price tool gives a range in a couple of minutes. A written price needs a survey.