Two-storey extensions in Sleaford
From over-garage bedrooms to full wraparounds, we cover every kind of two-storey extension in Sleaford.
Sleaford at a glance
- Postcode districts
- NG34
- Area
- Lincolnshire, England
- Price region
- East Midlands
- Nearest towns
- Grantham (11.4 miles), Boston (16 miles), Bourne (16 miles), Lincoln (16.7 miles)
- Distance to Lincoln
- about 16.7 miles
- Approvals
- Two-storey rear: up to 3 m deep and 7 m from the rear boundary under permitted development. Side, wraparound and front: planning permission.
Sleaford sits about 16.7 miles from Lincoln. Closer to home, Grantham is 11.4 miles away and Boston 16.0 miles.
Extensions available in Sleaford
Two-storey rear extensions
From £55,000 in Sleaford. Free visit to firm it up.
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Two-storey side extensions
For homes in Sleaford: typical guide from £84,500.
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Two-storey wraparound extensions
Guide from £118,000 in Sleaford, including VAT.
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Part single, part two-storey extensions
Design, approvals and build for Sleaford homes. Guide from £70,500.
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Extensions over a garage
Design, approvals and build for Sleaford homes. Guide from £31,000.
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First-floor extensions
From £24,500 in Sleaford. Free visit to firm it up.
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Two-storey extensions for semi-detached houses
Guide from £55,000 in Sleaford, including VAT.
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Two-storey extensions for detached houses
For homes in Sleaford: typical guide from £84,500.
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Kitchen extensions with bedrooms above
Design, approvals and build for Sleaford homes. Guide from £55,000 (before kitchen units).
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Extra bedroom and en-suite extensions
Sleaford guide price from £55,000 (plus en-suite), Standard spec.
Learn moreWhich type suits your house?
Which type suits your house in Sleaford depends mostly on where you have room. A deep garden points to a rear extension; space beside the house points to a side or over-garage extension; a house that already has a single-storey extension can often take a first floor on top.
Also available in Lincolnshire
- Two-storey front extensions
- Two-storey extensions for end-of-terrace houses
- Two-storey annexe extensions
- Garage conversions with a room above
- Two-storey extension plans and drawings
- Planning permission for two-storey extensions
- Structural engineering for two-storey extensions
- Building regulations for two-storey extensions
- Party wall notices for extensions
- Design and build two-storey extensions
Rules for Sleaford
Sleaford is in England. Two-storey rear: up to 3 m deep and 7 m from the rear boundary under permitted development. Side, wraparound and front: planning permission. Householder planning application: £548 (or £575 for applications made from 8 December 2026). Lawful development certificate: £274 (about £288 for applications from 8 December 2026). Councils should decide householder applications within 8 weeks of validation.
The full England rules explained
Questions about extensions in Sleaford
Do you cover Sleaford?
Yes. We cover Sleaford (NG34) and the surrounding area, including Grantham and Boston. The first site visit is free.
What does a two-storey extension cost in Sleaford?
Using our East Midlands guide, a two-storey rear extension with a 4 m × 3.5 m footprint on two floors (28 m² of new floor space) is about £55,000–£74,000 including VAT. An extension over a garage is about £31,000–£45,000.
Which other places near Sleaford do you cover?
Everywhere around it, including Grantham (11.4 miles), Boston (16 miles) and Bourne (16 miles), and the rest of Lincolnshire.