Two-storey extensions in Armthorpe
We design, get approval for and build two-storey extensions in Armthorpe and the surrounding area. Choose the type of extension below or book a free site visit.
Armthorpe at a glance
- Postcode districts
- DN3
- Area
- South Yorkshire, England
- Price region
- Yorkshire and the Humber
- Nearest towns
- Kirk Sandall (2 miles), Doncaster (3.3 miles), Bentley (4 miles), Adwick le Street (5.9 miles)
- Distance to Sheffield
- about 20 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 Armthorpe (DN3) and the places around it, including Kirk Sandall (2.0 miles), Doncaster (3.3 miles) and Bentley.
Extensions available in Armthorpe
Two-storey rear extensions
Design, approvals and build for Armthorpe homes. Guide from £51,500.
Learn more
Two-storey side extensions
Design, approvals and build for Armthorpe homes. Guide from £79,000.
Learn more
Two-storey wraparound extensions
Guide from £111,000 in Armthorpe, including VAT.
Learn more
Part single, part two-storey extensions
Our Yorkshire and the Humber guide starts at £66,000 for this type.
Learn more
Extensions over a garage
Armthorpe guide price from £29,000, Standard spec.
Learn more
First-floor extensions
Our Yorkshire and the Humber guide starts at £23,000 for this type.
Learn more
Two-storey extensions for semi-detached houses
From £51,500 in Armthorpe. Free visit to firm it up.
Learn more
Two-storey extensions for detached houses
Design, approvals and build for Armthorpe homes. Guide from £79,000.
Learn more
Kitchen extensions with bedrooms above
For homes in Armthorpe: typical guide from £51,500 (before kitchen units).
Learn more
Extra bedroom and en-suite extensions
Guide from £51,500 (plus en-suite) in Armthorpe, including VAT.
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 Armthorpe, with a rough idea of the approval route and cost for each.
Also available in South 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 Armthorpe
Armthorpe 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 Armthorpe
Do you cover Armthorpe?
Yes. We cover Armthorpe (DN3) and the surrounding area, including Kirk Sandall and Doncaster. The first site visit is free.
What does a two-storey extension cost in Armthorpe?
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 Armthorpe do you cover?
Everywhere around it, including Kirk Sandall (2 miles), Doncaster (3.3 miles) and Bentley (4 miles), and the rest of South Yorkshire.