Sleaford, Lincolnshire
Two-storey rear extension in Sleaford
For homes in Sleaford, a two-storey rear extension is often the simplest way to gain space without moving. A larger kitchen downstairs and an extra bedroom or bathroom upstairs, under one roof. We take it from survey to completion certificate.
Sleaford is covered from our Lincolnshire round, including NG34. Two-storey rear extensions suit semi-detached houses in Sleaford best, where the extra bedroom matters as much as the bigger kitchen.
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 two-storey rear extension cost in Sleaford?
A two-storey rear extension in Sleaford is priced at £1,750–£2,620 per square metre including VAT as a guide, before kitchen fit-out and fees. East Midlands prices sit a little below our West Midlands baseline.
| Size | Guide price inc VAT |
|---|---|
| 3 m × 5 m footprint, two floors (30 m²) | £52,500–£78,500 |
| 4 m × 6 m footprint, two floors (48 m²) | £84,000–£125,500 |
Ground conditions, glazing, the roof and how far the house is opened up move the final figure within the range.
Do you need planning permission for a two-storey rear extension in Sleaford?
Whether your two-storey rear extension in Sleaford needs a planning application depends on its size, your house and any local restrictions.
England's rules allow a rear extension of more than one storey without an application only when it is no deeper than 3 metres and at least 7 metres from the boundary opposite the rear wall, and never on designated land. Most two-storey schemes need householder planning permission.
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 Sleaford like to extend?
Sleaford has plenty of inter-war semis and bungalows, and single-storey rear extensions suit both. In Lincolnshire we check the neighbours' rear windows first, because the upper floor is where most two-storey schemes win or lose planning.
How a two-storey rear extension in Sleaford 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.
Design and guide price
Two or three layout options with a guide price for each, so you choose the design knowing what it costs.
Approvals
Permitted development check, prior approval or planning application, then Building Regulations drawings and structural calculations, plus party wall notices where they apply.
Build and sign-off
We build to the approved drawings with regular updates, then hand over the building control completion certificate and any guarantees from suppliers.
Two-storey rear extensions near Sleaford
Close by, we work in Grantham, about 11.4 miles away, and Boston, about 16.0 miles away.
- Two-storey rear extension in Grantham
- Two-storey rear extension in Boston
- Two-storey rear extension in Bourne
- Two-storey rear extension in Lincoln
- Two-storey rear extension in Newark on Trent
Other work in Sleaford:
FAQ
Two-storey rear extension questions in Sleaford
What postcode areas do you cover around Sleaford?
Including NG34, and the surrounding Lincolnshire area.
How long does a rear extension take to build in Sleaford?
Most single-storey rear extensions take 10 to 16 weeks on site and two-storey extensions 16 to 26 weeks, after design and approvals.
Is two-storey cheaper per square metre than single-storey?
Usually yes, because the foundations and roof are shared across twice the floor area. The total cost is higher.
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.
How much does a two-storey rear extension cost in Sleaford?
As a guide, £1,750–£2,620 per square metre including VAT for a standard specification. For example, 3 m × 5 m footprint, two floors (30 m²): about £52,500–£78,500 at that rate. Your written price follows the survey.
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.