Two-storey extensions in Didcot
We design, get approval for and build two-storey extensions in Didcot and the surrounding area. Choose the type of extension below or book a free site visit.
Didcot at a glance
- Postcode districts
- OX11
- Area
- Oxfordshire, England
- Price region
- South East England
- Nearest towns
- Abingdon (4.6 miles), Wallingford (5.1 miles), Wantage (8 miles), Cowley (8.6 miles)
- Distance to Oxford
- about 9.9 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.
Didcot sits about 9.9 miles from Oxford. Closer to home, Abingdon is 4.6 miles away and Wallingford 5.1 miles.
Extensions available in Didcot
Two-storey rear extensions
For homes in Didcot: typical guide from £61,500.
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Two-storey side extensions
Didcot guide price from £94,500, Standard spec.
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Two-storey wraparound extensions
Design, approvals and build for Didcot homes. Guide from £132,500.
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Part single, part two-storey extensions
For homes in Didcot: typical guide from £79,000.
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Extensions over a garage
Guide from £34,500 in Didcot, including VAT.
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First-floor extensions
Guide from £27,500 in Didcot, including VAT.
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Two-storey extensions for semi-detached houses
From £61,500 in Didcot. Free visit to firm it up.
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Two-storey extensions for detached houses
From £94,500 in Didcot. Free visit to firm it up.
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Kitchen extensions with bedrooms above
For homes in Didcot: typical guide from £61,500 (before kitchen units).
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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 Didcot, with a rough idea of the approval route and cost for each.
Also available in Oxfordshire
- 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 Didcot
Didcot 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 Didcot
Do you cover Didcot?
Yes. We cover Didcot (OX11) and the surrounding area, including Abingdon and Wallingford. The first site visit is free.
What does a two-storey extension cost in Didcot?
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 Didcot do you cover?
Everywhere around it, including Abingdon (4.6 miles), Wallingford (5.1 miles) and Wantage (8 miles), and the rest of Oxfordshire.