Two-storey extensions in Knowle
Planning a bigger home in Knowle? Compare extension types and guide prices below, then book a free site visit.
Knowle at a glance
- Postcode districts
- B93
- Area
- West Midlands, England
- Price region
- West Midlands
- Nearest towns
- Solihull (2.9 miles), Shirley (West Midlands) (4.1 miles), Acocks Green (5.8 miles), Chelmsley Wood (6.6 miles)
- Distance to Birmingham
- about 9.8 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.
Around Knowle we also work in Solihull, Shirley (West Midlands) and Acocks Green, and across the rest of the West Midlands. Postcode district in and near Knowle: B93.
Extensions available in Knowle
Two-storey rear extensions
Knowle guide price from £56,000, Standard spec.
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Two-storey side extensions
Knowle guide price from £86,000, Standard spec.
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Two-storey wraparound extensions
From £120,500 in Knowle. Free visit to firm it up.
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Part single, part two-storey extensions
Guide from £72,000 in Knowle, including VAT.
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Extensions over a garage
Guide from £31,500 in Knowle, including VAT.
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First-floor extensions
Knowle guide price from £25,000, Standard spec.
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Two-storey extensions for semi-detached houses
Design, approvals and build for Knowle homes. Guide from £56,000.
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Two-storey extensions for detached houses
From £86,000 in Knowle. Free visit to firm it up.
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Kitchen extensions with bedrooms above
Knowle guide price from £56,000 (before kitchen units), Standard spec.
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Extra bedroom and en-suite extensions
Knowle guide price from £56,000 (plus en-suite), Standard spec.
Learn moreWhich type suits your house?
Start with what you need the space for. Bedrooms and an en-suite upstairs with a bigger kitchen below is the classic two-storey brief, but in Knowle we also design annexes, home offices and bedrooms over garages.
Also available in the West Midlands
- 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 Knowle
Knowle 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 Knowle
Do you cover Knowle?
Yes. We cover Knowle (B93) and the surrounding area, including Solihull and Shirley (West Midlands). The first site visit is free.
What does a two-storey extension cost in Knowle?
Using our West 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 £56,000–£75,500 including VAT. An extension over a garage is about £31,500–£46,000.
Which other places near Knowle do you cover?
Everywhere around it, including Solihull (2.9 miles), Shirley (West Midlands) (4.1 miles) and Acocks Green (5.8 miles), and the rest of the West Midlands.