Two-storey extensions in Yarm
Need more room in Yarm? Two-storey and first-floor extensions add bedrooms and living space without moving. Here's everything we offer locally.
Yarm at a glance
- Postcode districts
- TS15 and TS16
- Area
- County Durham, England
- Price region
- North East England
- Nearest towns
- Thornaby-on-Tees (3.1 miles), Stockton-on-Tees (4.7 miles), Billingham (6.5 miles), Middlesbrough (7 miles)
- Distance to Darlington
- about 7.9 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.
Around Yarm we also work in Thornaby-on-Tees, Stockton-on-Tees and Billingham, and across the rest of County Durham. Postcode districts in and near Yarm: TS15 and TS16.
Extensions available in Yarm
Two-storey rear extensions
Guide from £50,500 in Yarm, including VAT.
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Two-storey side extensions
Yarm guide price from £77,500, Standard spec.
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Two-storey wraparound extensions
Our North East England guide starts at £108,500 for this type.
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Part single, part two-storey extensions
Guide from £65,000 in Yarm, including VAT.
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Extensions over a garage
For homes in Yarm: typical guide from £28,500.
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First-floor extensions
From £22,500 in Yarm. Free visit to firm it up.
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Two-storey extensions for semi-detached houses
Guide from £50,500 in Yarm, including VAT.
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Two-storey extensions for detached houses
Guide from £77,500 in Yarm, including VAT.
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Kitchen extensions with bedrooms above
Design, approvals and build for Yarm homes. Guide from £50,500 (before kitchen units).
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Extra bedroom and en-suite extensions
From £50,500 (plus en-suite) in Yarm. Free visit to firm it up.
Learn moreWhich type suits your house?
Rear, side, wraparound or over the garage: each adds space in a different way. For most houses in County Durham, one or two of these will clearly suit the plot better than the rest, and we'll tell you which.
Also available in County Durham
- 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 Yarm
Yarm 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 Yarm
Do you cover Yarm?
Yes. We cover Yarm (TS15 and TS16) and the surrounding area, including Thornaby-on-Tees and Stockton-on-Tees. The first site visit is free.
What does a two-storey extension cost in Yarm?
Using our North East England 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 £50,500–£68,000 including VAT. An extension over a garage is about £28,500–£41,500.
Which other places near Yarm do you cover?
Everywhere around it, including Thornaby-on-Tees (3.1 miles), Stockton-on-Tees (4.7 miles) and Billingham (6.5 miles), and the rest of County Durham.