Bangor, North Wales
Wraparound extension in Bangor
An L-shaped extension that fills the side return and runs across the back. If you live in Bangor and want to know what a wraparound extension would cost and whether it needs planning, start with the online guide price or a free site visit.
Bangor sits in North Wales, with postcode districts including LL58 and LL59. In Bangor 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 Bangor?
For Bangor we work from the Wales rate: £2,050–£3,350 per square metre of new floor, including VAT, 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 |
Your written price follows a measured survey and an agreed design, so it reflects your house, not an average.
Do you need planning permission for a wraparound extension in Bangor?
Here is how the rules in Wales apply to a wraparound extension in Bangor.
In Wales a single-storey side extension can be permitted development if it is no more than 4 metres high and the house ends up no more than 50% wider than the original. Many side return infills on terraced streets, and most wraparounds, go through a householder application.
The Party Wall etc. Act 1996 also applies in Wales: two months' notice for work to a shared wall and one month for foundations dug close to a neighbour's building.
Conservation areas, National Parks and National Landscapes restrict permitted development in Wales, and listed buildings need listed building consent. Before any drawing we look up the property's history with the council, because earlier extensions and removed rights change the answer.
What are homes in Bangor like to extend?
Older terraces near the centre and post-war semis further out are typical of Bangor. Sloping sites are common in Wales, so floor levels and retaining walls are designed at the start.
How a wraparound extension in Bangor 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.
Approvals
Permitted development check or householder planning application, then Building Regulations drawings to the Welsh Approved Documents and structural calculations, plus party wall notices where they apply.
Build and sign-off
We build to the approved drawings with regular updates, then hand over the building control completion certificate and any guarantees from suppliers.
Wraparound extensions near Bangor
Close by, we work in Llandudno, about 14.0 miles away, and Colwyn Bay, about 17.3 miles away.
- Wraparound extension in Llandudno
- Wraparound extension in Colwyn Bay
- Wraparound extension in Holyhead
- Wraparound extension in Abergele
- Wraparound extension in Rhyl
Other work in Bangor:
FAQ
Wraparound extension questions in Bangor
How much does a wraparound extension cost in Bangor?
As a guide, £2,050–£3,350 per square metre including VAT for a standard specification. For example, L-shaped, about 22 m² of new floor: about £45,000–£73,500 at that rate. Your written price follows the survey.
What postcode areas do you cover around Bangor?
Including LL58 and LL59, and the surrounding North Wales area.
Will it take a lot of garden?
Less than a deep rear extension of the same area, because part of the space comes from the side passage.
Who will build my extension?
Vetted building teams working under contract to us. Your contract is with S&K Property Investments and Improvement Ltd for the design and the build.
Do you handle building control in Bangor?
Yes. We apply to the council or a registered approver under the Welsh regulations and hand over the completion certificate.
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.