What is a kitchen extension?
A kitchen extension is an extension designed around a new kitchen, usually an open-plan kitchen, dining and family space at the back of the house. We build the extension and fit the kitchen as one project, so plumbing, electrics and lighting are planned around the layout from the start.
How much does a kitchen extension cost in Darlington?
In Darlington, a kitchen extension typically costs £2,000–£3,050 per m² including a mid-range kitchen, including VAT at 20% (standard rate). For a typical 22 m² project that is roughly £44,000–£67,000. Prices across the North East are typically 10% below the UK average for this kind of work, which is reflected in the range for Darlington. Design, structural calculations and council fees are extra.
| Size or type | Guide range |
|---|---|
| Smaller project (15 m²) | £30,000–£46,000 |
| Typical project (22 m²) | £44,000–£67,000 |
| Larger project (31 m²) | £62,000–£94,500 |
| Rate per m² | £2,000–£3,050 |
What moves the price most:
- Island with sink or hob, which needs services in the floor
- Who supplies the kitchen
- Underfloor heating and flooring
- Glazing and roof lanterns
Your exact price depends on the survey and drawings. The guide price tool gives a quick range in the meantime.
Do you need planning permission for a kitchen extension in Darlington?
Here is how the rules work for a kitchen extension in England. In England a single-storey rear extension is often permitted development: broadly up to 3 metres deep on a semi-detached or terraced house and 4 metres on a detached house, no higher than 4 metres, with eaves no higher than 3 metres within 2 metres of a boundary, and covering no more than half the garden. The larger home extension scheme allows up to 6 or 8 metres if you notify the council first and neighbours have a chance to comment. In conservation areas, National Parks and National Landscapes the larger home extension route, side extensions and cladding are not permitted development. Flats and houses whose rights have been removed need a planning application, and listed buildings need listed building consent.
Building regulations approval comes from the council’s building control service or a registered building control approver. The work is inspected at key stages, such as foundations, drainage and insulation, and a completion certificate is issued at the end.
Our first visit includes a check of your planning history, so you know the route before paying for drawings.
What we handle
From survey to sign-off, the job normally involves:
- Flooring and decoration
- Drainage and water supply positioned for the sink and appliances
- Building control sign-off
- Extension structure, roof and glazing
- Kitchen fitting, worktops and splashbacks
- Kitchen layout planned alongside the extension design
How long does it take?
Expect 11 to 16 weeks on site, including kitchen fitting. Before that, surveys, drawings and approvals usually take 6 to 12 weeks, longer if the council asks for changes.
Building in Darlington
Across the North East, colliery-era terraces and newer estates sit side by side, so the right project depends on the house type.
We work across Darlington and neighbouring areas such as Newton Aycliffe, Yarm and Stockton-on-Tees. Postcodes we cover in Darlington include DL3 and DL98.
How it works
- 01
Free visit
We look at the property, talk through what you want and measure up. There is no charge and no obligation.
- 02
Design and fixed quote
Drawings, structural calculations and an itemised, fixed price for the agreed specification.
- 03
Approvals
Planning or permitted development confirmation, building regulations and any party wall matters.
- 04
Build and handover
Work follows the agreed programme, with inspections along the way and a completion certificate at the end.
Questions about kitchen extensions in Darlington
Can I buy my own kitchen?
Yes. You can supply it and we fit it, or we supply it as part of the price. Either way we coordinate deliveries with the build programme.
Is underfloor heating worth it?
In a large open-plan space it frees wall space for units and glazing and gives even heat. It is easiest to fit during the build.
Should the kitchen be designed before the extension?
Yes. Knowing where the sink, hob and island will go lets us place drains, ducting, sockets and windows correctly during the build.
How much does a kitchen extension cost in Darlington?
In Darlington, a kitchen extension typically costs £2,000–£3,050 per m² including a mid-range kitchen, including VAT at 20% (standard rate). A typical 22 m² project comes to roughly £44,000–£67,000. Your fixed price depends on the survey and drawings.
Who approves a kitchen extension in Darlington?
Planning matters in Darlington go to the council covering your address, and the work needs building control approval. We prepare and submit the applications for you.