House extensions in Scunthorpe
From a small utility to a two-storey addition, we take on house extensions throughout Scunthorpe, starting with a free visit and a planning check.
- Postcode districtsDN15, DN16, DN17
- Price regionEast Midlands (×0.95)
- Planning rulesEngland
- Site visitFree, no obligation
Guide prices for Scunthorpe
Prices on this page use our East Midlands factor of ×0.95, include VAT at 20% and cover the build; your written price follows a survey and agreed drawings.
| Extension type | Example size | Standard spec (inc VAT) |
|---|---|---|
| Conservatory replacement extensions | 14 m² | £28,500 – £37,000 |
| Orangery extensions | 16 m² | £42,500 – £53,500 |
| Side return extensions | 11 m² | £25,000 – £31,500 |
| Double-storey extensions | 32 m² | £54,500 – £71,500 |
| Kitchen extensions | 20 m² | £39,500 – £50,500 |
Approvals for an extension in Scunthorpe
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 return infill is often permitted development if it stays within the height limits and is no wider than half the width of the original house. Conservation areas, listed buildings and flats always need an application, and the boundary wall usually brings in the Party Wall Act.
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.
If the work involves a shared wall, building on the boundary, or digging foundations within 3 m (sometimes 6 m) of a neighbour's building, the Party Wall etc. Act 1996 applies and notice must be served before work starts: two months for work to a party wall, one month for new walls on the boundary and for excavations.
Applications are decided by the local planning authority (your district, borough or unitary council).
What works best for Scunthorpe houses?
The East Midlands has plenty of inter-war and post-war semis and detached houses with room to extend, alongside Victorian terraces in the towns.
For many houses here, single-storey rear extensions, side extensions or conservatory replacement extensions gives the most useful space for the budget.
Where we work near Scunthorpe
Our survey diary covers Scunthorpe, including DN15, DN16, DN17. Nearby, we also take on projects in Gainsborough (14 miles), Grimsby (24 miles), Lincoln (25 miles), Cleethorpes (26 miles), Grantham (46 miles). For homes towards East Riding of Yorkshire, Brough is around 11 miles away.
Choose an extension type
- Planning permission for extensions · from £300
- Flat roof extensions · from £19,500
- Orangery extensions · from £28,500
- Timber frame extensions · from £19,500
- Side extensions · from £20,500
- Wraparound extensions · from £34,000
- Utility and boot room extensions · from £13,000
- Porch extensions · from £3,800
- Building regulations for extensions · from £850
- Single-storey rear extensions · from £19,500
- Pitched roof extensions · from £21,000
- Conservatory replacement extensions · from £19,000
- Side return extensions · from £17,000
- Bungalow extensions · from £24,500
- Extension plans and drawings · from £1,100
- Annexe extensions · from £52,000
- Glass box extensions · from £28,500
- Kitchen extensions · from £25,500
- Extensions over a garage · from £22,500
- Home office extensions · from £15,000
- Bedroom extensions · from £24,500
- Double-storey extensions · from £36,000
Free site visit
A designer visits, takes measurements and photos, and discusses layouts, budget and timing with you.
Design and approvals
We draw the design, agree it with you and handle planning or permitted development checks and building regulations.
Fixed written price
You receive a written, itemised price and programme. Nothing starts until you are happy with it.
Build and sign-off
We build it with one project manager, book the building control inspections and hand over the completion certificate.
Questions about extensions in Scunthorpe
How much does an extension cost in Scunthorpe?
Using our East Midlands factor (×0.95), a standard-spec single-storey extension of 20 m² is a guide £38,500 to £49,500 including VAT, and a 32 m² two-storey extension £54,500 to £71,500. Your written price follows the survey.
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 Scunthorpe?
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.
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.
Book a free site visit in Scunthorpe
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.