Extensions in Sheffield: design, planning and build
From a small utility to a two-storey addition, we take on house extensions throughout Sheffield, starting with a free visit and a planning check.
- Postcode districtsS1, S2, S3, S4, S7, S10
- Price regionYorkshire and the Humber (×0.94)
- Planning rulesEngland
- Site visitFree, no obligation
Popular extension prices in Sheffield
Use these Sheffield guide prices to sense-check a budget; the guide-price tool narrows them to your own size, and the site visit turns them into a written figure.
| Extension type | Example size | Standard spec (inc VAT) |
|---|---|---|
| Side return extensions | 11 m² | £24,500 – £31,500 |
| Wraparound extensions | 25 m² | £54,000 – £68,500 |
| Kitchen extensions | 20 m² | £39,000 – £50,000 |
| Extensions over a garage | 12 m² | £23,500 – £30,500 |
| Orangery extensions | 16 m² | £42,000 – £53,000 |
Which extension suits a Sheffield home?
Yorkshire and the Humber combines stone-built terraces in the Pennine towns with brick semis and newer estates elsewhere, so materials and roof details need matching with care.
Depending on the plot, single-storey rear extensions and side return extensions are often the strongest options, with double-storey extensions worth considering where there is room.
Do extensions in Sheffield 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.
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).
Covering Sheffield and nearby
Across S1, S2, S3, S4, S7, S10, we can visit, measure and advise. Nearby, we also take on projects in Rotherham (6 miles), Rawmarsh (7 miles), Dinnington (11 miles), Barnsley (12 miles), Darton (14 miles). Just over the Derbyshire border, Dronfield is about 6 miles away.
All extension types we build in Sheffield
- Side return extensions · from £16,500
- Extension plans and drawings · from £1,100
- Wraparound extensions · from £33,500
- Kitchen extensions · from £25,000
- Orangery extensions · from £28,000
- Pitched roof extensions · from £20,500
- Side extensions · from £20,500
- Extensions over a garage · from £22,500
- Utility and boot room extensions · from £13,000
- Bedroom extensions · from £24,000
- Flat roof extensions · from £19,500
- Home office extensions · from £15,000
- Planning permission for extensions · from £300
- Glass box extensions · from £28,000
- Single-storey rear extensions · from £19,500
- Building regulations for extensions · from £800
- Timber frame extensions · from £19,500
- Annexe extensions · from £51,500
- Double-storey extensions · from £35,500
- Bungalow extensions · from £24,500
- Porch extensions · from £3,750
- Conservatory replacement extensions · from £18,500
Free site visit
It starts with a visit to your house to measure, check access and talk through ideas and budget.
Design and approvals
Drawings are prepared and agreed with you, then submitted for the right planning route and building regulations approval.
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 Sheffield
How much does an extension cost in Sheffield?
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.
Can I get a price before anyone visits?
Yes. This page shows guide prices adjusted for Sheffield, and the guide-price tool gives a range for your own size and finish in about a minute.
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.
Do you handle building regulations?
Yes. We prepare the drawings and calculations, submit them and book inspections, ending with a completion certificate.
Book a free site visit in Sheffield
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.