Two-storey extensions in Wellingborough
Need more room in Wellingborough? Two-storey and first-floor extensions add bedrooms and living space without moving. Here's everything we offer locally.
Wellingborough at a glance
- Postcode districts
- NN8 and NN29
- Area
- Northamptonshire, England
- Price region
- East Midlands
- Nearest towns
- Rushden (4 miles), Kettering (6.7 miles), Northampton (8.8 miles), Desborough (11 miles)
- Distance to Northampton
- about 8.8 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.
We cover Wellingborough (NN8 and NN29) and the places around it, including Rushden (4.0 miles), Kettering (6.7 miles) and Northampton.
Extensions available in Wellingborough
Two-storey rear extensions
Our East Midlands guide starts at £55,000 for this type.
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Two-storey side extensions
Design, approvals and build for Wellingborough homes. Guide from £84,500.
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Two-storey wraparound extensions
From £118,000 in Wellingborough. Free visit to firm it up.
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Part single, part two-storey extensions
Design, approvals and build for Wellingborough homes. Guide from £70,500.
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Extensions over a garage
Guide from £31,000 in Wellingborough, including VAT.
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First-floor extensions
Design, approvals and build for Wellingborough homes. Guide from £24,500.
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Two-storey extensions for semi-detached houses
From £55,000 in Wellingborough. Free visit to firm it up.
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Two-storey extensions for detached houses
From £84,500 in Wellingborough. Free visit to firm it up.
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Kitchen extensions with bedrooms above
From £55,000 (before kitchen units) in Wellingborough. Free visit to firm it up.
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Extra bedroom and en-suite extensions
Guide from £55,000 (plus en-suite) in Wellingborough, including VAT.
Learn moreWhich type suits your house?
The boundaries usually decide it. Two-storey work close to a neighbour needs careful design for light and privacy, so at the visit in Wellingborough we measure distances to every boundary before suggesting a type.
Also available in Northamptonshire
- 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 Wellingborough
Wellingborough 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 Wellingborough
Do you cover Wellingborough?
Yes. We cover Wellingborough (NN8 and NN29) and the surrounding area, including Rushden and Kettering. The first site visit is free.
What does a two-storey extension cost in Wellingborough?
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 Wellingborough do you cover?
Everywhere around it, including Rushden (4 miles), Kettering (6.7 miles) and Northampton (8.8 miles), and the rest of Northamptonshire.