Two-storey extensions in Brackley
Homeowners in Brackley can use us for the whole project or just the drawings and approvals. Start with a free visit.
Brackley at a glance
- Postcode districts
- NN13
- Area
- Northamptonshire, England
- Price region
- East Midlands
- Nearest towns
- Buckingham (7.3 miles), Banbury (8.4 miles), Bicester (9.2 miles), Daventry (15.5 miles)
- Distance to Northampton
- about 18.8 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 NN13 in and around Brackley, along with neighbouring Buckingham, Banbury and Bicester.
Extensions available in Brackley
Two-storey rear extensions
Guide from £55,000 in Brackley, including VAT.
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Two-storey side extensions
From £84,500 in Brackley. Free visit to firm it up.
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Two-storey wraparound extensions
Brackley guide price from £118,000, Standard spec.
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Part single, part two-storey extensions
From £70,500 in Brackley. Free visit to firm it up.
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Extensions over a garage
For homes in Brackley: typical guide from £31,000.
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First-floor extensions
Design, approvals and build for Brackley homes. Guide from £24,500.
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Two-storey extensions for semi-detached houses
Guide from £55,000 in Brackley, including VAT.
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Two-storey extensions for detached houses
Brackley guide price from £84,500, Standard spec.
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Kitchen extensions with bedrooms above
Guide from £55,000 (before kitchen units) in Brackley, including VAT.
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Extra bedroom and en-suite extensions
Guide from £55,000 (plus en-suite) in Brackley, including VAT.
Learn moreWhich type suits your house?
The boundaries usually decide it. Two-storey work close to a neighbour needs careful design for light and privacy, so at the visit in Brackley we measure distances to every boundary before suggesting a type.
Also available in Northamptonshire
- 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 Brackley
Brackley 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 Brackley
Do you cover Brackley?
Yes. We cover Brackley (NN13) and the surrounding area, including Buckingham and Banbury. The first site visit is free.
What does a two-storey extension cost in Brackley?
Using our East Midlands 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 £55,000–£74,000 including VAT. An extension over a garage is about £31,000–£45,000.
Which other places near Brackley do you cover?
Everywhere around it, including Buckingham (7.3 miles), Banbury (8.4 miles) and Bicester (9.2 miles), and the rest of Northamptonshire.