Royal Leamington Spa, Warwickshire
Single-storey rear extension in Royal Leamington Spa
We plan and build single-storey rear extensions for homeowners in Royal Leamington Spa. Ground-floor space across the back of the house, usually for a kitchen, dining or family room. Start with a free site visit, then a written price once the design is agreed.
Royal Leamington Spa sits in Warwickshire, with postcode districts including CV31, CV32 and CV33. A single-storey rear extension in Royal Leamington Spa is mostly built from the garden side, so the house stays usable for most of the job.
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 single-storey rear extension cost in Royal Leamington Spa?
Guide prices for a single-storey 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 |
These are guide ranges; the written quote after the survey is the figure that counts.
Do you need planning permission for a single-storey rear extension in Royal Leamington Spa?
Whether your single-storey rear extension in Royal Leamington Spa needs a planning application depends on its size, your house and any local restrictions.
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. Before any drawing we look up the property's history with the council, because earlier extensions and removed rights change the answer.
What are homes in Royal Leamington Spa like to extend?
Royal Leamington Spa has a lot of post-war semis and estate houses with long gardens and side access, which makes rear extensions quicker to build.
How a single-storey rear extension in Royal Leamington Spa comes together
Look round and measure
A free visit to see the back of the house, measure it, check the drains and boundaries and hear what you need.
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.
Single-storey rear extensions near Royal Leamington Spa
From Royal Leamington Spa, the nearest places we also cover are Warwick (2.7 miles) and Kenilworth (5.2 miles).
- Single-storey rear extension in Warwick
- Single-storey rear extension in Kenilworth
- Single-storey rear extension in Coventry
- Single-storey rear extension in Stratford-upon-Avon
- Single-storey rear extension in Knowle
Other work in Royal Leamington Spa:
FAQ
Single-storey rear extension questions in Royal Leamington Spa
How much does a single-storey 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.
Is a flat roof or a pitched roof better?
A warm flat roof keeps the extension low under first-floor windows and suits a roof lantern; a pitched or lean-to roof gives a vaulted ceiling. Both last for decades when built properly.
Is the site visit in Royal Leamington Spa free?
Yes. We visit, measure up and talk through the options with no cost and no obligation.
Can I live at home while the extension is built?
Usually yes. Most of the work is outside until the back wall is opened near the end, and that stage is screened off.
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.