Dinnington house extensions
More space without moving: we plan and build extensions across Dinnington, with one team for the drawings, the council and the build.
- Postcode districtsS25
- Price regionYorkshire and the Humber (×0.94)
- Planning rulesEngland
- Site visitFree, no obligation
Dinnington extension prices at a glance
Prices on this page use our Yorkshire and the Humber factor of ×0.94, 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) |
|---|---|---|
| Orangery extensions | 16 m² | £42,000 – £53,000 |
| Kitchen extensions | 20 m² | £39,000 – £50,000 |
| Conservatory replacement extensions | 14 m² | £28,000 – £36,500 |
| Extensions over a garage | 12 m² | £23,500 – £30,500 |
| Wraparound extensions | 25 m² | £54,000 – £68,500 |
| Double-storey extensions | 32 m² | £54,000 – £71,000 |
Dinnington and surrounding towns
Our survey diary covers Dinnington, including S25. We also work in nearby Rotherham (8 miles), Rawmarsh (9 miles), Sheffield (11 miles), Doncaster (11 miles), Adwick le Street (14 miles). For homes towards Nottinghamshire, Worksop is around 5 miles away.
What works best for Dinnington 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.
Start by comparing side return extensions, pitched roof extensions and single-storey rear extensions: between them they cover most of the layouts we see requested for houses like these.
Do extensions in Dinnington need planning permission?
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 two-storey rear extension is permitted development only if it projects no more than 3 m from the original rear wall, sits at least 7 m from the rear boundary, matches the roof pitch and uses obscure, non-opening side windows upstairs. Most two-storey extensions therefore go through a householder planning application, which costs £548 from 1 April 2026 and normally takes about 8 weeks.
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).
Extension types and starting prices
- Bedroom extensions · from £24,000
- Wraparound extensions · from £33,500
- Double-storey extensions · from £35,500
- Flat roof extensions · from £19,500
- Orangery extensions · from £28,000
- Timber frame extensions · from £19,500
- Building regulations for extensions · from £800
- Home office extensions · from £15,000
- Porch extensions · from £3,750
- Annexe extensions · from £51,500
- Planning permission for extensions · from £300
- Utility and boot room extensions · from £13,000
- Kitchen extensions · from £25,000
- Extensions over a garage · from £22,500
- Side extensions · from £20,500
- Bungalow extensions · from £24,500
- Conservatory replacement extensions · from £18,500
- Pitched roof extensions · from £20,500
- Single-storey rear extensions · from £19,500
- Glass box extensions · from £28,000
- Extension plans and drawings · from £1,100
- Side return extensions · from £16,500
Free site visit
First, a site visit: we look at the house, garden, access and drains and listen to what you need.
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
We build it with one project manager, book the building control inspections and hand over the completion certificate.
Questions about extensions in Dinnington
How much does an extension cost in Dinnington?
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.
How long does an extension take in Dinnington?
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.
Who do I contract with?
Your contract is with S&K Property Investments and Improvement Ltd, which designs and manages the project and the build teams who carry it out.
Can I get a price before anyone visits?
Yes. This page shows guide prices adjusted for Dinnington, and the guide-price tool gives a range for your own size and finish in about a minute.
Book a free site visit in Dinnington
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.