Two-storey extensions in Wallingford
We design, get approval for and build two-storey extensions in Wallingford and the surrounding area. Choose the type of extension below or book a free site visit.
Wallingford at a glance
- Postcode districts
- OX10, OX49 and RG8
- Area
- Oxfordshire, England
- Price region
- South East England
- Nearest towns
- Didcot (5.1 miles), Abingdon (8.4 miles), Cowley (9.8 miles), Henley-on-Thames (10.7 miles)
- Distance to Oxford
- about 11.9 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.
Around Wallingford we also work in Didcot, Abingdon and Cowley, and across the rest of Oxfordshire. Postcode districts in and near Wallingford: OX10, OX49 and RG8.
Extensions available in Wallingford
Two-storey rear extensions
From £61,500 in Wallingford. Free visit to firm it up.
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Two-storey side extensions
For homes in Wallingford: typical guide from £94,500.
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Two-storey wraparound extensions
From £132,500 in Wallingford. 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
Design, approvals and build for Wallingford homes. Guide from £34,500.
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First-floor extensions
Wallingford guide price from £27,500, Standard spec.
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Two-storey extensions for semi-detached houses
For homes in Wallingford: typical guide from £61,500.
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Two-storey extensions for detached houses
Wallingford guide price from £94,500, Standard spec.
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Kitchen extensions with bedrooms above
Design, approvals and build for Wallingford homes. Guide from £61,500 (before kitchen units).
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Extra bedroom and en-suite extensions
Design, approvals and build for Wallingford homes. Guide from £61,500 (plus en-suite).
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 Wallingford we measure distances to every boundary before suggesting a type.
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 Wallingford
Wallingford 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 Wallingford
Do you cover Wallingford?
Yes. We cover Wallingford (OX10, OX49 and RG8) and the surrounding area, including Didcot and Abingdon. The first site visit is free.
What does a two-storey extension cost in Wallingford?
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 Wallingford do you cover?
Everywhere around it, including Didcot (5.1 miles), Abingdon (8.4 miles) and Cowley (9.8 miles), and the rest of Oxfordshire.