Two-storey extensions in Hartlepool
Need more room in Hartlepool? Two-storey and first-floor extensions add bedrooms and living space without moving. Here's everything we offer locally.
Hartlepool at a glance
- Postcode districts
- TS24, TS25 and TS26
- Area
- County Durham, England
- Price region
- North East England
- Nearest towns
- Peterlee (7.2 miles), Billingham (7.4 miles), Middlesbrough (7.6 miles), Redcar (7.7 miles)
- Distance to Darlington
- about 17.6 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 postcode districts TS24, TS25 and TS26 in and around Hartlepool, along with neighbouring Peterlee, Billingham and Middlesbrough.
Extensions available in Hartlepool

Two-storey rear extensions
Our North East England guide starts at £50,500 for this type.
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Two-storey side extensions
Design, approvals and build for Hartlepool homes. Guide from £77,500.
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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
Our North East England guide starts at £65,000 for this type.
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Extensions over a garage
Guide from £28,500 in Hartlepool, including VAT.
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First-floor extensions
Our North East England guide starts at £22,500 for this type.
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Two-storey extensions for semi-detached houses
Guide from £50,500 in Hartlepool, including VAT.
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Two-storey extensions for detached houses
Design, approvals and build for Hartlepool homes. Guide from £77,500.
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Kitchen extensions with bedrooms above
Hartlepool guide price from £50,500 (before kitchen units), Standard spec.
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Extra bedroom and en-suite extensions
For homes in Hartlepool: typical guide from £50,500 (plus en-suite).
Learn moreWhich type suits your house?
If you're not sure which type fits, that's what the free visit is for. We'll sketch the realistic options for your house in Hartlepool, with a rough idea of the approval route and cost for each.
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 Hartlepool
Hartlepool 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 Hartlepool
Do you cover Hartlepool?
Yes. We cover Hartlepool (TS24, TS25 and TS26) and the surrounding area, including Peterlee and Billingham. The first site visit is free.
What does a two-storey extension cost in Hartlepool?
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 Hartlepool do you cover?
Everywhere around it, including Peterlee (7.2 miles), Billingham (7.4 miles) and Middlesbrough (7.6 miles), and the rest of County Durham.