Two-storey extensions in Catterick Garrison
Everything for a two-storey extension in Catterick Garrison, in one place: types, guide prices for Yorkshire and the Humber, the approval rules in England and how to get started.
Catterick Garrison at a glance
- Postcode districts
- DL8, DL9, DL10 and DL11
- Area
- North Yorkshire, England
- Price region
- Yorkshire and the Humber
- Nearest towns
- Northallerton (12 miles), Darlington (12.3 miles), Yarm (17 miles), Newton Aycliffe (17.7 miles)
- Distance to York
- about 38.9 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 Catterick Garrison (DL8, DL9, DL10 and DL11) and the places around it, including Northallerton (12.0 miles), Darlington (12.3 miles) and Yarm.
Extensions available in Catterick Garrison

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 Catterick Garrison homes. Guide from £79,000.
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Two-storey wraparound extensions
From £111,000 in Catterick Garrison. Free visit to firm it up.
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Part single, part two-storey extensions
For homes in Catterick Garrison: typical guide from £66,000.
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Extensions over a garage
Our Yorkshire and the Humber guide starts at £29,000 for this type.
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First-floor extensions
Design, approvals and build for Catterick Garrison homes. Guide from £23,000.
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Two-storey extensions for semi-detached houses
For homes in Catterick Garrison: typical guide from £51,500.
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Two-storey extensions for detached houses
Guide from £79,000 in Catterick Garrison, including VAT.
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Kitchen extensions with bedrooms above
From £51,500 (before kitchen units) in Catterick Garrison. Free visit to firm it up.
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Extra bedroom and en-suite extensions
Our Yorkshire and the Humber guide starts at £51,500 (plus en-suite) for this type.
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 Catterick Garrison we measure distances to every boundary before suggesting a type.
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 Catterick Garrison
Catterick Garrison 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 Catterick Garrison
Do you cover Catterick Garrison?
Yes. We cover Catterick Garrison (DL8, DL9, DL10 and DL11) and the surrounding area, including Northallerton and Darlington. The first site visit is free.
What does a two-storey extension cost in Catterick Garrison?
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 Catterick Garrison do you cover?
Everywhere around it, including Northallerton (12 miles), Darlington (12.3 miles) and Yarm (17 miles), and the rest of North Yorkshire.