Two-storey extensions in Thetford
Planning a bigger home in Thetford? Compare extension types and guide prices below, then book a free site visit.
Thetford at a glance
- Postcode districts
- IP24 and IP26
- Area
- Norfolk, England
- Price region
- East of England
- Nearest towns
- Watton (10.9 miles), Mildenhall (11.3 miles), Bury St Edmunds (11.9 miles), Attleborough (Norfolk) (13.2 miles)
- Distance to Norwich
- about 27.3 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.
Thetford sits about 27.3 miles from Norwich. Closer to home, Watton is 10.9 miles away and Mildenhall 11.3 miles.
Extensions available in Thetford
Two-storey rear extensions
Guide from £57,500 in Thetford, including VAT.
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Two-storey side extensions
Design, approvals and build for Thetford homes. Guide from £88,500.
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Two-storey wraparound extensions
Guide from £124,000 in Thetford, including VAT.
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Part single, part two-storey extensions
From £74,000 in Thetford. Free visit to firm it up.
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Extensions over a garage
Our East of England guide starts at £32,500 for this type.
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First-floor extensions
Thetford guide price from £26,000, Standard spec.
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Two-storey extensions for semi-detached houses
From £57,500 in Thetford. Free visit to firm it up.
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Two-storey extensions for detached houses
Guide from £88,500 in Thetford, including VAT.
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Kitchen extensions with bedrooms above
Thetford guide price from £57,500 (before kitchen units), Standard spec.
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Extra bedroom and en-suite extensions
Guide from £57,500 (plus en-suite) in Thetford, including VAT.
Learn moreWhich type suits your house?
Which type suits your house in Thetford depends mostly on where you have room. A deep garden points to a rear extension; space beside the house points to a side or over-garage extension; a house that already has a single-storey extension can often take a first floor on top.
Also available in Norfolk
- 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 Thetford
Thetford 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 Thetford
Do you cover Thetford?
Yes. We cover Thetford (IP24 and IP26) and the surrounding area, including Watton and Mildenhall. The first site visit is free.
What does a two-storey extension cost in Thetford?
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 Thetford do you cover?
Everywhere around it, including Watton (10.9 miles), Mildenhall (11.3 miles) and Bury St Edmunds (11.9 miles), and the rest of Norfolk.