Wraparound extensions in Coleraine: design, approvals and build
Thinking about a wraparound extension for your Coleraine home? Start with a free site visit: we measure up, check what the council will allow and give you honest guide figures on the day.
- Guide price in ColeraineFrom £30,500 inc VAT
- PlanningUsually needs planning permission
- Build time14–20 weeks on site
- Postcode districtsBT52
Planning and approvals in Coleraine
In Northern Ireland the Planning (General Permitted Development) Order 2015 lets some single-storey rear extensions go ahead without planning permission, up to 3 m on a semi-detached or terraced house and 4 m on a detached house, within height and boundary limits. Larger, side and two-storey extensions normally need planning permission from the council, and building control approval is separate.
Homes in conservation areas, areas of townscape character and listed buildings have tighter rules, so we always check the property's status and planning history before design starts.
Northern Ireland has no Party Wall Act. Where work is on or close to a shared boundary, we agree access and protection with your neighbour in writing before work starts.
Applications are decided by your council, which handles local planning in Northern Ireland.
Who a wraparound extension suits
- Terraced houses that want the largest ground floor possible
- Semi-detached houses with a side passage
- Families who want kitchen, dining and living in one space
The corner is where wraparounds succeed or fail. We usually use a single steel goalpost or a corner post hidden in a pier, and set the glazing so the new room reads as one space rather than two boxes.
Working in Coleraine
Site visits are available across Coleraine (BT52). Neighbouring towns we cover include Limavady (13 miles), Magherafelt (26 miles), Derry/Londonderry (27 miles).
Ballymena, in County Antrim, is roughly 24 miles from Coleraine and also on our list. In Northern Ireland, extension projects follow the NI planning rules and council building control, which we account for from the first survey.
What should I budget for a wraparound extension in Coleraine?
For Coleraine we adjust our national guide rates by ×0.86, the factor we use for Northern Ireland. Figures include VAT; your written quote after the survey replaces them.
Typical rates in Coleraine: £1,720 to £3,180 per m² including VAT, depending on specification.
| Size | Essential | Standard | Premium |
|---|---|---|---|
| Compact L-shape 18 m² | £30,500 – £37,500 | £35,500 – £45,000 | £44,500 – £57,500 |
| Medium L-shape 25 m² | £43,000 – £52,000 | £49,000 – £62,500 | £62,000 – £80,000 |
| Large L-shape 32 m² | £55,000 – £66,500 | £63,000 – £80,000 | £79,500 – £102,000 |
Try the guide-price tool to see a range for your own size and finish.
What happens next
Site visits are free and there is no obligation. Where drawings are needed, the design stage is priced in writing before it starts.
Free site visit
It starts with a visit to your house to measure, check access and talk through ideas and budget.
Design and approvals
We produce the drawings and structural design, and manage the approvals so they are in place before work starts.
Fixed written price
You receive a written, itemised price and programme. Nothing starts until you are happy with it.
Build and sign-off
Work is carried out to the agreed programme, inspected by building control and signed off at the end.
Common questions in Coleraine
Will my neighbours in Coleraine be involved?
If a planning application is needed, the council notifies neighbours. Where work is close to a shared boundary, we agree access and protection with them in writing.
Do I need building regulations approval in Coleraine?
Yes. Almost every extension needs it, whatever the planning route. We prepare the drawings and book the inspections.
How long does a wraparound extension take to build in Coleraine?
On site, typically 14 to 20 weeks once approvals are in place. Before that, allow 8–16 weeks design and approvals.
Is a wraparound better than a side return alone?
It adds far more space, but costs more and needs planning permission more often. Our comparison guide sets the two side by side.
How much does a wraparound extension cost?
Our guide range is about £1,720 to £3,180 per m² including VAT. A 25 m² standard-spec wraparound typically lands around £49,000 to £62,500 in Coleraine before design and council fees.
Book a free site visit in Coleraine
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.