Two-storey extensions in Thatcham
We design, get approval for and build two-storey extensions in Thatcham and the surrounding area. Choose the type of extension below or book a free site visit.
Thatcham at a glance
- Postcode districts
- RG18 and RG19
- Area
- Berkshire, England
- Price region
- South East England
- Nearest towns
- Newbury (2.8 miles), Tadley (6.8 miles), Basingstoke (12.3 miles), Reading (13 miles)
- Distance to Reading
- about 13 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.
Thatcham sits about 13.0 miles from Reading. Closer to home, Newbury is 2.8 miles away and Tadley 6.8 miles.
Extensions available in Thatcham
Two-storey rear extensions
Design, approvals and build for Thatcham homes. Guide from £61,500.
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Two-storey side extensions
Guide from £94,500 in Thatcham, including VAT.
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Two-storey wraparound extensions
From £132,500 in Thatcham. Free visit to firm it up.
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Part single, part two-storey extensions
Our South East England guide starts at £79,000 for this type.
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Extensions over a garage
Thatcham guide price from £34,500, Standard spec.
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First-floor extensions
Design, approvals and build for Thatcham homes. Guide from £27,500.
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Two-storey extensions for semi-detached houses
For homes in Thatcham: typical guide from £61,500.
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Two-storey extensions for detached houses
Thatcham guide price from £94,500, Standard spec.
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Kitchen extensions with bedrooms above
Our South East England guide starts at £61,500 (before kitchen units) for this type.
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Extra bedroom and en-suite extensions
Our South East England guide starts at £61,500 (plus en-suite) for this type.
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 Thatcham, with a rough idea of the approval route and cost for each.
Also available in Berkshire
- 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 Thatcham
Thatcham 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 Thatcham
Do you cover Thatcham?
Yes. We cover Thatcham (RG18 and RG19) and the surrounding area, including Newbury and Tadley. The first site visit is free.
What does a two-storey extension cost in Thatcham?
Using our South East 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 £61,500–£83,000 including VAT. An extension over a garage is about £34,500–£50,500.
Which other places near Thatcham do you cover?
Everywhere around it, including Newbury (2.8 miles), Tadley (6.8 miles) and Basingstoke (12.3 miles), and the rest of Berkshire.