House extensions in North Walsham
We design and build house extensions for homes in North Walsham and the surrounding Norfolk area, with guide prices adjusted for the region.
- Postcode districtsNR28
- Price regionEast of England (×1.06)
- Planning rulesEngland
- Site visitFree, no obligation
Where we work near North Walsham
Across NR28, we can visit, measure and advise. Nearby, we also take on projects in Cromer (8 miles), Norwich (14 miles), Great Yarmouth (20 miles), Wymondham (21 miles), Dereham (22 miles). For homes towards Suffolk, Lowestoft is around 28 miles away.
What works best for North Walsham houses?
The East of England mixes market-town terraces, inter-war semis and modern estates. Clay soils are common in parts of the region, which can affect foundation design.
Start by comparing double-storey extensions, bungalow extensions and single-storey rear extensions: between them they cover most of the layouts we see requested for houses like these.
Guide prices for North Walsham
Every figure below is a guide for North Walsham, adjusted for East of England build costs (×1.06) and including VAT. Design and council fees are shown separately on each page.
| Extension type | Example size | Standard spec (inc VAT) |
|---|---|---|
| Extensions over a garage | 12 m² | £26,500 – £34,500 |
| Wraparound extensions | 25 m² | £60,500 – £77,000 |
| Double-storey extensions | 32 m² | £61,000 – £80,000 |
| Side return extensions | 11 m² | £27,500 – £35,000 |
| Single-storey rear extensions | 20 m² | £43,000 – £55,500 |
Planning rules in North Walsham
In England a single-storey rear extension can usually go up to 3 m beyond the original rear wall of a semi-detached or terraced house, or 4 m on a detached house, without a planning application, provided it is no more than 4 m high, keeps eaves to 3 m within 2 m of a boundary and, with other buildings, covers no more than half the land around the original house. The larger home extension prior approval scheme raises those depths to 6 m and 8 m, with neighbours notified and a 42-day decision.
In England a single-storey side extension can be permitted development if it is no more than 4 m high and no wider than half the width of the original house. Two-storey side extensions, and any side extension on designated land such as a conservation area, need a householder planning application.
In a conservation area, national park, National Landscape, the Broads or a World Heritage Site the permitted development limits are tighter (no side or two-storey extensions without an application). Listed homes need listed building consent, and if permitted development rights have been removed, any extension needs an application.
Building regulations approval is separate from planning. In England you can use the council's building control team or a registered building control approver; a full plans application gets the drawings checked before work starts, and the inspector signs the work off with a completion certificate.
Applications are decided by the local planning authority (your district, borough or unitary council).
Every extension type in North Walsham
- Pitched roof extensions · from £23,500
- Porch extensions · from £4,200
- Wraparound extensions · from £38,000
- Orangery extensions · from £31,500
- Double-storey extensions · from £40,000
- Side return extensions · from £19,000
- Conservatory replacement extensions · from £21,000
- Utility and boot room extensions · from £14,500
- Flat roof extensions · from £22,000
- Home office extensions · from £16,500
- Single-storey rear extensions · from £22,000
- Kitchen extensions · from £28,500
- Planning permission for extensions · from £350
- Annexe extensions · from £58,000
- Side extensions · from £23,000
- Bedroom extensions · from £27,500
- Glass box extensions · from £31,500
- Building regulations for extensions · from £950
- Extensions over a garage · from £25,000
- Timber frame extensions · from £22,000
- Bungalow extensions · from £27,500
- Extension plans and drawings · from £1,250
Free site visit
We visit your North Walsham home, measure up, talk through what you want and check the planning position.
Design and approvals
We draw the design, agree it with you and handle planning or permitted development checks and building regulations.
Fixed written price
We confirm the build price in writing, based on the approved drawings and the finishes you have chosen.
Build and sign-off
Work is carried out to the agreed programme, inspected by building control and signed off at the end.
Questions about extensions in North Walsham
How much does an extension cost in North Walsham?
Using our East of England factor (×1.06), a standard-spec single-storey extension of 20 m² is a guide £43,000 to £55,500 including VAT, and a 32 m² two-storey extension £61,000 to £80,000. Your written price follows the survey.
Will my neighbours need to be told?
If you apply for planning or prior approval the council notifies them, and in England party wall notices may be needed for work near a shared boundary.
Do you handle building regulations?
Yes. We prepare the drawings and calculations, submit them and book inspections, ending with a completion certificate.
How long does an extension take in North Walsham?
Usually 2 to 4 months of design and approvals, then 10 to 16 weeks on site for a single-storey extension or 16 to 24 weeks for two storeys.
Book a free site visit in North Walsham
We will measure up, check the planning position and give you honest guide figures.
- Free, no-obligation site visit
- Planning route checked before you spend on drawings
- Written price once the design is agreed
- Building control sign-off at the end
Prefer to talk? Call 0800 088 6341 or .
Book a free site visit
Tell us a little about the project and we will arrange a time.