Two-storey extensions in Selby
Need more room in Selby? Two-storey and first-floor extensions add bedrooms and living space without moving. Here's everything we offer locally.
Selby at a glance
- Postcode districts
- YO8
- Area
- North Yorkshire, England
- Price region
- Yorkshire and the Humber
- Nearest towns
- Knottingley (9.3 miles), Goole (9.5 miles), Pontefract (11.9 miles), York (12.1 miles)
- Distance to York
- about 12.1 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.
Around Selby we also work in Knottingley, Goole and Pontefract, and across the rest of North Yorkshire. Postcode district in and near Selby: YO8.
Extensions available in Selby
Two-storey rear extensions
Guide from £51,500 in Selby, including VAT.
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Two-storey side extensions
Guide from £79,000 in Selby, including VAT.
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Two-storey wraparound extensions
Selby guide price from £111,000, Standard spec.
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Part single, part two-storey extensions
Guide from £66,000 in Selby, including VAT.
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Extensions over a garage
Design, approvals and build for Selby homes. Guide from £29,000.
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First-floor extensions
Guide from £23,000 in Selby, including VAT.
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Two-storey extensions for semi-detached houses
Our Yorkshire and the Humber guide starts at £51,500 for this type.
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Two-storey extensions for detached houses
Selby guide price from £79,000, Standard spec.
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Kitchen extensions with bedrooms above
Guide from £51,500 (before kitchen units) in Selby, including VAT.
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Extra bedroom and en-suite extensions
For homes in Selby: typical guide from £51,500 (plus en-suite).
Learn moreWhich type suits your house?
Start with what you need the space for. Bedrooms and an en-suite upstairs with a bigger kitchen below is the classic two-storey brief, but in Selby we also design annexes, home offices and bedrooms over garages.
Also available in North Yorkshire
- 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 Selby
Selby 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 Selby
Do you cover Selby?
Yes. We cover Selby (YO8) and the surrounding area, including Knottingley and Goole. The first site visit is free.
What does a two-storey extension cost in Selby?
Using our Yorkshire and the Humber 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 £51,500–£69,500 including VAT. An extension over a garage is about £29,000–£42,000.
Which other places near Selby do you cover?
Everywhere around it, including Knottingley (9.3 miles), Goole (9.5 miles) and Pontefract (11.9 miles), and the rest of North Yorkshire.