Two-storey extensions in Cambridge
Homeowners in Cambridge can use us for the whole project or just the drawings and approvals. Start with a free visit.
Cambridge at a glance
- Postcode districts
- CB1, CB2, CB3, CB4, CB5, CB22 and nearby districts
- Area
- Cambridgeshire, England
- Price region
- East of England
- Nearest towns
- Royston (Cambridgeshire) (12.1 miles), St Ives (12.3 miles), Newmarket (12.6 miles), Soham (13.2 miles)
- Distance to Peterborough
- about 30 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.
Cambridge sits about 30.0 miles from Peterborough. Closer to home, Royston (Cambridgeshire) is 12.1 miles away and St Ives 12.3 miles.
Extensions available in Cambridge
Two-storey rear extensions
Design, approvals and build for Cambridge homes. Guide from £57,500.
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Two-storey side extensions
Guide from £88,500 in Cambridge, including VAT.
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Two-storey wraparound extensions
For homes in Cambridge: typical guide from £124,000.
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Part single, part two-storey extensions
From £74,000 in Cambridge. Free visit to firm it up.
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Extensions over a garage
Design, approvals and build for Cambridge homes. Guide from £32,500.
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First-floor extensions
Guide from £26,000 in Cambridge, including VAT.
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Two-storey extensions for semi-detached houses
Design, approvals and build for Cambridge homes. Guide from £57,500.
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Two-storey extensions for detached houses
Our East of England guide starts at £88,500 for this type.
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Kitchen extensions with bedrooms above
Cambridge guide price from £57,500 (before kitchen units), Standard spec.
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Extra bedroom and en-suite extensions
Cambridge guide price from £57,500 (plus en-suite), Standard spec.
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 Cambridgeshire
- 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 Cambridge
Cambridge 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 Cambridge
Do you cover Cambridge?
Yes. We cover Cambridge (CB1, CB2, CB3, CB4, CB5, CB22 and nearby districts) and the surrounding area, including Royston (Cambridgeshire) and St Ives. The first site visit is free.
What does a two-storey extension cost in Cambridge?
Using our East of 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 Cambridge do you cover?
Everywhere around it, including Royston (Cambridgeshire) (12.1 miles), St Ives (12.3 miles) and Newmarket (12.6 miles), and the rest of Cambridgeshire.