Two-storey extensions in Newton Aycliffe
Need more room in Newton Aycliffe? Two-storey and first-floor extensions add bedrooms and living space without moving. Here's everything we offer locally.
Newton Aycliffe at a glance
- Postcode districts
- DL5
- Area
- County Durham, England
- Price region
- North East England
- Nearest towns
- Shildon (3 miles), Ferryhill (4.6 miles), Bishop Auckland (4.9 miles), Spennymoor (5.7 miles)
- Distance to Darlington
- about 6.6 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 district DL5 in and around Newton Aycliffe, along with neighbouring Shildon, Ferryhill and Bishop Auckland.
Extensions available in Newton Aycliffe
Two-storey rear extensions
Newton Aycliffe guide price from £50,500, Standard spec.
Learn more
Two-storey side extensions
Newton Aycliffe guide price from £77,500, Standard spec.
Learn more
Two-storey wraparound extensions
From £108,500 in Newton Aycliffe. Free visit to firm it up.
Learn more
Part single, part two-storey extensions
Newton Aycliffe guide price from £65,000, Standard spec.
Learn more
Extensions over a garage
For homes in Newton Aycliffe: typical guide from £28,500.
Learn more
First-floor extensions
Design, approvals and build for Newton Aycliffe homes. Guide from £22,500.
Learn more
Two-storey extensions for semi-detached houses
From £50,500 in Newton Aycliffe. Free visit to firm it up.
Learn more
Two-storey extensions for detached houses
From £77,500 in Newton Aycliffe. Free visit to firm it up.
Learn more
Kitchen extensions with bedrooms above
Our North East England guide starts at £50,500 (before kitchen units) for this type.
Learn more
Extra bedroom and en-suite extensions
Our North East England guide starts at £50,500 (plus en-suite) for this type.
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 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 Newton Aycliffe
Newton Aycliffe 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 Newton Aycliffe
Do you cover Newton Aycliffe?
Yes. We cover Newton Aycliffe (DL5) and the surrounding area, including Shildon and Ferryhill. The first site visit is free.
What does a two-storey extension cost in Newton Aycliffe?
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 Newton Aycliffe do you cover?
Everywhere around it, including Shildon (3 miles), Ferryhill (4.6 miles) and Bishop Auckland (4.9 miles), and the rest of County Durham.