Royal Leamington Spa, Warwickshire
Kitchen-diner rear extension in Royal Leamington Spa
An open-plan kitchen, dining and family room that opens straight onto the garden. We design, get the approvals for and build kitchen-diner rear extensions in Royal Leamington Spa and the surrounding area, with one contract from the first survey to building control sign-off.
We cover Royal Leamington Spa (CV31, CV32 and CV33) as part of our Warwickshire work. For Royal Leamington Spa kitchens we plan the extraction route and the island drainage before the slab is poured, so nothing has to be chased in later.
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 Royal Leamington Spa?
Guide prices for a kitchen-diner rear extension in Royal Leamington Spa start from our West Midlands rate of £1,900–£3,100 per square metre, including VAT. The West Midlands is the baseline for our guide prices.
| Size | Guide price inc VAT |
|---|---|
| 3 m wide × 4 m deep (12 m²) | £23,000–£37,000 |
| 4 m wide × 5 m deep (20 m²) | £38,000–£62,000 |
| 4 m wide × 6 m deep (24 m²) | £45,500–£74,500 |
Your written price follows a measured survey and an agreed design, so it reflects your house, not an average.
Do you need planning permission for a kitchen-diner rear extension in Royal Leamington Spa?
Planning for a kitchen-diner rear extension in Royal Leamington Spa follows the English householder rules.
In England a single-storey rear extension can often be built under permitted development: up to 3 metres beyond the original rear wall of an attached house, or 4 metres on a detached house, no higher than 4 metres, with eaves no higher than 3 metres if any part is within 2 metres of a boundary.
England also has the larger home extension route: a single-storey rear extension of up to 6 metres on an attached house or 8 metres on a detached house, after prior approval from the council. The council notifies your neighbours and has 42 days to decide; the fee is £249 (£310 for applications made from 8 December 2026). The route is not available on designated land such as conservation areas.
Conservation areas, National Parks, National Landscapes and the Broads restrict permitted development, and listed buildings always need listed building consent. We check your house's planning history and any conservation area before drawing, so the route is clear before you spend on plans.
What are homes in Royal Leamington Spa like to extend?
Red-brick terraces and 1930s semis make up much of Royal Leamington Spa. Many already have a small kitchen lean-to at the back, which a new rear extension usually replaces rather than adds to.
How a kitchen-diner rear extension in Royal Leamington Spa comes together
Survey visit
We visit free of charge, measure up, check access, drainage and neighbours' extensions, and note what you want the room to do.
Drawings and budget
Floor plans and elevations for the options, each with a guide price.
Paperwork handled
Planning, prior approval or permitted development, Building Regulations approval, structural design and party wall notices are all handled by us.
Fixed price and build
A written price for the agreed design, a start date and a named contact through the build, ending with the building control completion certificate.
Kitchen-diner rear extensions near Royal Leamington Spa
Neighbouring places we cover include Warwick (2.7 miles) and Kenilworth (5.2 miles).
- Kitchen-diner rear extension in Warwick
- Kitchen-diner rear extension in Kenilworth
- Kitchen-diner rear extension in Coventry
- Kitchen-diner rear extension in Stratford-upon-Avon
- Kitchen-diner rear extension in Knowle
Other work in Royal Leamington Spa:
FAQ
Kitchen-diner rear extension questions in Royal Leamington Spa
Do you handle building control in Royal Leamington Spa?
Yes. We apply to the council or a registered building control approver and hand over the completion certificate.
Do I need planning permission for a rear extension in Royal Leamington Spa?
Often not for a single-storey rear extension of up to 3 metres (4 metres on a detached house) under permitted development, or up to 6 or 8 metres with prior approval, unless the house is in a conservation area or its rights have been removed.
Where does the cooker extraction go?
Through the new wall or roof, ducted to outside. Recirculating hoods are possible but less effective.
Do I need a party wall agreement?
In England, usually yes if the extension is on or near a shared boundary or the foundations are close to a neighbour's building. We serve the notices.
How much does a kitchen-diner rear extension cost in Royal Leamington Spa?
As a guide, £1,900–£3,100 per square metre including VAT for a standard specification. For example, 3 m wide × 4 m deep (12 m²): about £23,000–£37,000 at that rate. Your written price follows the survey.
What postcode areas do you cover around Royal Leamington Spa?
Including CV31, CV32 and CV33, and the surrounding Warwickshire area.