Two-storey extensions in Downham Market
From over-garage bedrooms to full wraparounds, we cover every kind of two-storey extension in Downham Market.
Downham Market at a glance
- Postcode districts
- PE33 and PE38
- Area
- Norfolk, England
- Price region
- East of England
- Nearest towns
- King's Lynn (10 miles), Wisbech (10.3 miles), March (13 miles), Ely (15.2 miles)
- Distance to Norwich
- about 38.4 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 Downham Market we also work in King's Lynn, Wisbech and March, and across the rest of Norfolk. Postcode districts in and near Downham Market: PE33 and PE38.
Extensions available in Downham Market

Two-storey rear extensions
Downham Market guide price from £57,500, Standard spec.
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Two-storey side extensions
Guide from £88,500 in Downham Market, including VAT.
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Two-storey wraparound extensions
Design, approvals and build for Downham Market homes. Guide from £124,000.
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Part single, part two-storey extensions
From £74,000 in Downham Market. Free visit to firm it up.
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Extensions over a garage
From £32,500 in Downham Market. Free visit to firm it up.
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First-floor extensions
Our East of England guide starts at £26,000 for this type.
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Two-storey extensions for semi-detached houses
Design, approvals and build for Downham Market homes. Guide from £57,500.
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Two-storey extensions for detached houses
For homes in Downham Market: typical guide from £88,500.
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Kitchen extensions with bedrooms above
For homes in Downham Market: typical guide from £57,500 (before kitchen units).
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Extra bedroom and en-suite extensions
Downham Market guide price from £57,500 (plus en-suite), Standard spec.
Learn moreWhich type suits your house?
Start with what you need the space for. Bedrooms and an en-suite upstairs with a bigger kitchen below is the classic two-storey brief, but in Downham Market we also design annexes, home offices and bedrooms over garages.
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 Downham Market
Downham Market 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 Downham Market
Do you cover Downham Market?
Yes. We cover Downham Market (PE33 and PE38) and the surrounding area, including King's Lynn and Wisbech. The first site visit is free.
What does a two-storey extension cost in Downham Market?
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 Downham Market do you cover?
Everywhere around it, including King's Lynn (10 miles), Wisbech (10.3 miles) and March (13 miles), and the rest of Norfolk.