Two-storey extensions in Blandford Forum
Need more room in Blandford Forum? Two-storey and first-floor extensions add bedrooms and living space without moving. Here's everything we offer locally.
Blandford Forum at a glance
- Postcode districts
- DT11 and SP7
- Area
- Dorset, England
- Price region
- South West England
- Nearest towns
- Wimborne Minster (9.4 miles), Broadstone (10.2 miles), Canford Heath (11.3 miles), Ferndown (12 miles)
- Distance to Bournemouth
- about 15.7 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 DT11 and SP7 in and around Blandford Forum, along with neighbouring Wimborne Minster, Broadstone and Canford Heath.
Extensions available in Blandford Forum
Two-storey rear extensions
From £57,500 in Blandford Forum. Free visit to firm it up.
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Two-storey side extensions
From £88,500 in Blandford Forum. Free visit to firm it up.
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Two-storey wraparound extensions
From £124,000 in Blandford Forum. Free visit to firm it up.
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Part single, part two-storey extensions
For homes in Blandford Forum: typical guide from £74,000.
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Extensions over a garage
Design, approvals and build for Blandford Forum homes. Guide from £32,500.
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First-floor extensions
For homes in Blandford Forum: typical guide from £26,000.
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Two-storey extensions for semi-detached houses
From £57,500 in Blandford Forum. Free visit to firm it up.
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Two-storey extensions for detached houses
Blandford Forum guide price from £88,500, Standard spec.
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Kitchen extensions with bedrooms above
For homes in Blandford Forum: typical guide from £57,500 (before kitchen units).
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Extra bedroom and en-suite extensions
Guide from £57,500 (plus en-suite) in Blandford Forum, including VAT.
Learn moreWhich type suits your house?
Rear, side, wraparound or over the garage: each adds space in a different way. For most houses in Dorset, one or two of these will clearly suit the plot better than the rest, and we'll tell you which.
Also available in Dorset
- 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 Blandford Forum
Blandford Forum 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 Blandford Forum
Do you cover Blandford Forum?
Yes. We cover Blandford Forum (DT11 and SP7) and the surrounding area, including Wimborne Minster and Broadstone. The first site visit is free.
What does a two-storey extension cost in Blandford Forum?
Using our South West 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 £57,500–£78,000 including VAT. An extension over a garage is about £32,500–£47,500.
Which other places near Blandford Forum do you cover?
Everywhere around it, including Wimborne Minster (9.4 miles), Broadstone (10.2 miles) and Canford Heath (11.3 miles), and the rest of Dorset.