Sleaford, Lincolnshire
Side return extension in Sleaford
Infilling the narrow passage beside a Victorian or Edwardian back addition. We design, get the approvals for and build side return extensions in Sleaford and the surrounding area, with one contract from the first survey to building control sign-off.
Sleaford and its postcode districts NG34 are part of our Lincolnshire coverage. Side returns suit the Victorian and Edwardian terraces found across parts of Lincolnshire, where the kitchen sits in a narrow back addition.
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 side return extension cost in Sleaford?
Guide prices for a side return extension in Sleaford start from our East Midlands rate of £2,230–£3,690 per square metre, including VAT. East Midlands prices sit a little below our West Midlands baseline.
| Size | Guide price inc VAT |
|---|---|
| 2 m wide × 6 m deep (12 m²) | £27,000–£44,000 |
| 2.5 m wide × 7 m deep (17.5 m²) | £39,000–£64,500 |
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 side return extension in Sleaford?
Here is how the rules in England apply to a side return extension in Sleaford.
Side return infills and the side leg of a wraparound are treated as side extensions in England: single-storey, no more than 4 metres high and no wider than half the original house. They are not permitted development in conservation areas, National Parks or National Landscapes, and a joined wraparound often needs a planning application because the side and rear rules apply together.
The Party Wall etc. Act 1996 applies in England: you serve notice two months before work to a shared wall, and one month before digging foundations within 3 metres (or 6 metres for deeper foundations) of a neighbour's building. Neighbours can agree in writing; if they dissent, surveyors agree an award.
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 Sleaford like to extend?
Sleaford has plenty of inter-war semis and bungalows, and single-storey rear extensions suit both.
How a side return extension in Sleaford 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.
Design and guide price
Two or three layout options with a guide price for each, so you choose the design knowing what it costs.
Paperwork handled
Planning, prior approval or permitted development, Building Regulations approval, structural design and party wall notices are all handled by us.
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.
Side return extensions near Sleaford
We also build side return extensions in nearby Grantham (11.4 miles) and Boston (16.0 miles).
- Side return extension in Grantham
- Side return extension in Boston
- Side return extension in Bourne
- Side return extension in Lincoln
- Side return extension in Newark on Trent
Other work in Sleaford:
FAQ
Side return extension questions in Sleaford
How much does a side return extension cost in Sleaford?
As a guide, £2,230–£3,690 per square metre including VAT for a standard specification. For example, 2 m wide × 6 m deep (12 m²): about £27,000–£44,000 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.
Do I need my neighbour's permission?
Not their permission, but in England and Wales you must serve party wall notices, and a neighbour can consent in writing or ask for a surveyor's award.
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.
Can you match the brick or stone on my Sleaford house?
We source the closest match and show you samples before ordering; reclaimed materials are often the best match on older houses.
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.