Wraparound extensions in Carrickfergus: design, approvals and build
From the first sketch to final sign-off, we plan and build wraparound extensions in Carrickfergus and the surrounding County Antrim area.
- Guide price in CarrickfergusFrom £30,500 inc VAT
- PlanningUsually needs planning permission
- Build time14–20 weeks on site
- Postcode districtsBT38
What should I budget for a wraparound extension in Carrickfergus?
For Carrickfergus 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 Carrickfergus: £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 |
For a figure based on your own dimensions, use our guide-price tool.
Is a wraparound extension right for your house?
- Families who want kitchen, dining and living in one space
- Terraced houses that want the largest ground floor possible
- Semi-detached houses with a side passage
Do I need planning permission in Carrickfergus?
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.
In Northern Ireland building control is run by the councils under the Building Regulations (Northern Ireland). We submit full plans or a building notice and book the inspections through to completion.
Applications are decided by your council, which handles local planning in Northern Ireland.
Extensions in and around Carrickfergus
Postcode districts we cover around Carrickfergus include BT38. The same team covers Newtownabbey (6 miles), Larne (9 miles), Belfast (10 miles), Castlereagh (10 miles), all within easy reach.
In Northern Ireland, extension projects follow the NI planning rules and council building control, which we account for from the first survey.
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
A designer visits, takes measurements and photos, and discusses layouts, budget and timing with you.
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
The price is fixed in writing once the design is settled, with a clear programme and payment stages.
Build and sign-off
The build is managed from start to finish, inspected at each stage and signed off on completion.
Your questions about a wraparound extension in Carrickfergus
How long does a wraparound extension take to build in Carrickfergus?
On site, typically 14 to 20 weeks once approvals are in place. Before that, allow 8–16 weeks design and approvals.
Do I need building regulations approval in Carrickfergus?
Yes. Almost every extension needs it, whatever the planning route. We prepare the drawings and book the inspections.
Will my neighbours in Carrickfergus 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.
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 Carrickfergus before design and council fees.
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.
Book a free site visit in Carrickfergus
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.