Kitchen extensions across Belfast
Our design and build teams take on kitchen extensions in Belfast, from the first measured survey through planning and building control to the finished room.
- Guide price in BelfastFrom £23,000 inc VAT
- PlanningNI permitted development (rear 3–4 m) or planning
- Build time10–16 weeks on site
- Postcode districtsBT1, BT2, BT6, BT7, BT12
When a kitchen extension makes sense
- Families who want cooking, dining and living together
- Small or closed-off kitchens
- Homes being prepared for sale or a long-term stay
Will the council need to approve it?
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.
In a conservation area or area of townscape character the permitted development rights are more limited, listed homes need listed building consent, and if rights have been removed by a condition, any extension needs an application.
Building close to a public sewer needs the agreement of NI Water, which we check during design.
Applications are decided by your council, which handles local planning in Northern Ireland.
How much does a kitchen extension cost in Belfast?
For Belfast 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 Belfast: £1,550 to £3,010 per m² including VAT, depending on specification.
| Size | Essential | Standard | Premium |
|---|---|---|---|
| 3 m × 5 m 15 m² | £23,000 – £27,500 | £27,000 – £34,500 | £34,000 – £45,500 |
| 4 m × 5 m 20 m² | £30,500 – £36,500 | £36,000 – £46,000 | £45,500 – £60,500 |
| 4 m × 7 m 28 m² | £43,000 – £51,000 | £50,500 – £64,000 | £63,500 – £84,500 |
Build cost only. A mid-range kitchen, supplied and fitted, typically adds £9,000 to £20,000.
For a figure based on your own dimensions, use our guide-price tool.
Working in Belfast
Site visits are available across Belfast (BT1, BT2, BT6, BT7, BT12, BT13). We also work in nearby Castlereagh (2 miles), Newtownabbey (4 miles), Lisburn (7 miles), Carrickfergus (10 miles).
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
We visit your Belfast home, measure up, talk through what you want and check the planning position.
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
We confirm the build price in writing, based on the approved drawings and the finishes you have chosen.
Build and sign-off
Work is carried out to the agreed programme, inspected by building control and signed off at the end.
Kitchen extension questions answered
Will my neighbours in Belfast 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 long does a kitchen extension take to build in Belfast?
On site, typically 10 to 16 weeks once approvals are in place. Before that, allow 4–12 weeks design and approvals.
Can I see a price before committing to anything?
Yes. The guide prices on this page are adjusted for Belfast, and the guide-price tool gives a range for your own size. After the survey you get a written price before anything is agreed.
How much does a kitchen extension cost?
For the extension itself our guide range is about £1,550 to £3,010 per m² including VAT. A standard 20 m² kitchen extension is typically around £36,000 to £46,000 in Belfast, plus the kitchen itself, which commonly adds £9,000 to £20,000 for a mid-range design.
Can you fit a kitchen I buy elsewhere?
Yes. We can fit it or work with your supplier’s fitters. We need the layout early so that drains, services and lighting are in the right place.
Book a free site visit in Belfast
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.