West Watford, Hertfordshire
Kitchen-diner rear extension in West Watford
We plan and build kitchen-diner rear extensions for homeowners in West Watford. An open-plan kitchen, dining and family room that opens straight onto the garden. Start with a free site visit, then a written price once the design is agreed.
West Watford and its postcode districts WD1, WD17 and WD18 are part of our Hertfordshire coverage. We usually keep the working kitchen where the old one was and put the dining table in the new space by the doors, which suits most West Watford homes.
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 kitchen-diner rear extension cost in West Watford?
Guide prices for a kitchen-diner rear extension in West Watford start from our East of England rate of £2,010–£3,290 per square metre, including VAT. East of England prices run slightly above our West Midlands baseline; clay soils near trees are the main foundation variable.
| Size | Guide price inc VAT |
|---|---|
| 3 m wide × 4 m deep (12 m²) | £24,000–£39,500 |
| 4 m wide × 5 m deep (20 m²) | £40,500–£65,500 |
| 4 m wide × 6 m deep (24 m²) | £48,500–£79,000 |
These are guide ranges; the written quote after the survey is the figure that counts.
Do you need planning permission for a kitchen-diner rear extension in West Watford?
The planning route for a kitchen-diner rear extension in West Watford is set by England's householder rules and your council.
Under England's householder permitted development rules you can usually add 3 metres at the back of an attached house, or 4 metres on a detached house, without a planning application, as long as the extension stays under 4 metres high and its eaves stay under 3 metres where it is within 2 metres of a boundary.
If 3 or 4 metres is not enough, England's prior approval route allows 6 metres on a terraced or semi-detached house and 8 metres on a detached house for a single-storey rear extension. Neighbours are consulted, the council decides within 42 days, and the fee is £249, rising to £310 from 8 December 2026.
Conservation areas, National Parks, National Landscapes and the Broads restrict permitted development, and listed buildings always need listed building consent. At the first visit we measure what is there now and tell you which route fits: permitted development, prior approval or a planning application.
What are homes in West Watford like to extend?
West Watford mixes Victorian terraces with 1930s semis, so both side returns and full-width kitchen extensions suit houses here.
How a kitchen-diner rear extension in West Watford comes together
Free site visit
We measure the house and garden, look at the back wall, drainage and boundaries, and talk through what you want from the space.
Options and costs
We draw layout options and price each one, so the budget shapes the design rather than surprising you later.
Planning and regulations
We take the design through the right planning route, then produce the construction drawings and engineer's calculations for building control.
Written price, then build
Once the design and approvals are in place, you get a fixed written price and programme, and we build through to sign-off.
Kitchen-diner rear extensions near West Watford
We also build kitchen-diner rear extensions in nearby Watford (0.9 miles) and North Watford (1.9 miles).
- Kitchen-diner rear extension in Watford
- Kitchen-diner rear extension in North Watford
- Kitchen-diner rear extension in Croxley Green
- Kitchen-diner rear extension in Bushey
- Kitchen-diner rear extension in Batchworth
Other work in West Watford:
FAQ
Kitchen-diner rear extension questions in West Watford
Is the site visit in West Watford free?
Yes. We visit, measure up and talk through the options with no cost and no obligation.
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.
Can I add a utility room?
Often. A narrow utility or boot room along one side keeps the washing machine out of the open-plan space.
Can I get a price without a visit?
Our online guide-price tool gives a range in a couple of minutes. A written price needs a survey.
Do you handle building control in West Watford?
Yes. We apply to the council or a registered building control approver and hand over the completion certificate.
How long does a rear extension take to build in West Watford?
Most single-storey rear extensions take 10 to 16 weeks on site and two-storey extensions 16 to 26 weeks, after design and approvals.