Two-storey extensions in York
Everything for a two-storey extension in York, in one place: types, guide prices for Yorkshire and the Humber, the approval rules in England and how to get started.
York at a glance
- Postcode districts
- YO1, YO10, YO19, YO23, YO24, YO26 and nearby districts
- Area
- North Yorkshire, England
- Price region
- Yorkshire and the Humber
- Nearest towns
- Haxby (3.9 miles), Selby (12.1 miles), Wetherby (12.5 miles), Knaresborough (16.1 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.
We cover York (YO1, YO10, YO19, YO23, YO24, YO26 and nearby districts) and the places around it, including Haxby (3.9 miles), Selby (12.1 miles) and Wetherby.
Extensions available in York
Two-storey rear extensions
Our Yorkshire and the Humber guide starts at £51,500 for this type.
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Two-storey side extensions
Design, approvals and build for York homes. Guide from £79,000.
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Two-storey wraparound extensions
Our Yorkshire and the Humber guide starts at £111,000 for this type.
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Part single, part two-storey extensions
From £66,000 in York. Free visit to firm it up.
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Extensions over a garage
For homes in York: typical guide from £29,000.
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First-floor extensions
Guide from £23,000 in York, including VAT.
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Two-storey extensions for semi-detached houses
York guide price from £51,500, Standard spec.
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Two-storey extensions for detached houses
Our Yorkshire and the Humber guide starts at £79,000 for this type.
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Kitchen extensions with bedrooms above
York guide price from £51,500 (before kitchen units), Standard spec.
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Extra bedroom and en-suite extensions
Guide from £51,500 (plus en-suite) in York, including VAT.
Learn moreWhich type suits your house?
Rear and side extensions suit most semi-detached and detached houses with room around them. Terraced and town-centre homes can take a two-storey extension too, with more care over neighbours, light and access.
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 York
York 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 York
Do you cover York?
Yes. We cover York (YO1, YO10, YO19, YO23, YO24, YO26 and nearby districts) and the surrounding area, including Haxby and Selby. The first site visit is free.
What does a two-storey extension cost in York?
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 York do you cover?
Everywhere around it, including Haxby (3.9 miles), Selby (12.1 miles) and Wetherby (12.5 miles), and the rest of North Yorkshire.