Extending your home in Doncaster
More space without moving: we plan and build extensions across Doncaster, with one team for the drawings, the council and the build.
- Postcode districtsDN1, DN2, DN3, DN4, DN5, DN12
- Price regionYorkshire and the Humber (×0.94)
- Planning rulesEngland
- Site visitFree, no obligation
What works best for Doncaster houses?
Homes across Yorkshire and the Humber range from back-to-back and through terraces to large suburban semis, and extension options vary with them.
For many houses here, single-storey rear extensions, pitched roof extensions or double-storey extensions gives the most useful space for the budget.
Areas we cover around Doncaster
Across DN1, DN2, DN3, DN4, DN5, DN12, we can visit, measure and advise. We also work in nearby Adwick le Street (4 miles), Rawmarsh (10 miles), Dinnington (11 miles), Rotherham (11 miles), Barnsley (15 miles). South Elmsall, in West Yorkshire, is roughly 8 miles from Doncaster and also on our list.
Planning and building control in Doncaster
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.
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 extensions cost in Doncaster
We publish guide prices so you can budget before anyone visits. For Doncaster they are adjusted by ×0.94, the factor we use across Yorkshire and the Humber.
| Extension type | Example size | Standard spec (inc VAT) |
|---|---|---|
| Side return extensions | 11 m² | £24,500 – £31,500 |
| Orangery extensions | 16 m² | £42,000 – £53,000 |
| Kitchen extensions | 20 m² | £39,000 – £50,000 |
| Single-storey rear extensions | 20 m² | £38,500 – £49,000 |
| Wraparound extensions | 25 m² | £54,000 – £68,500 |
| Double-storey extensions | 32 m² | £54,000 – £71,000 |
Extension types and starting prices
- Porch extensions · from £3,750
- Pitched roof extensions · from £20,500
- Annexe extensions · from £51,500
- Wraparound extensions · from £33,500
- Extension plans and drawings · from £1,100
- Kitchen extensions · from £25,000
- Side extensions · from £20,500
- Single-storey rear extensions · from £19,500
- Planning permission for extensions · from £300
- Side return extensions · from £16,500
- Bungalow extensions · from £24,500
- Bedroom extensions · from £24,000
- Orangery extensions · from £28,000
- Building regulations for extensions · from £800
- Home office extensions · from £15,000
- Timber frame extensions · from £19,500
- Glass box extensions · from £28,000
- Conservatory replacement extensions · from £18,500
- Extensions over a garage · from £22,500
- Utility and boot room extensions · from £13,000
- Double-storey extensions · from £35,500
- Flat roof extensions · from £19,500
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
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 Doncaster
How much does an extension cost in Doncaster?
Using our Yorkshire and the Humber factor (×0.94), a standard-spec single-storey extension of 20 m² is a guide £38,500 to £49,000 including VAT, and a 32 m² two-storey extension £54,000 to £71,000. 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.
Do you cover all of Doncaster?
Yes, including the surrounding parts of South Yorkshire. Site visits are free and there is no obligation.
How long does an extension take in Doncaster?
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 Doncaster
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.