Cost of Single Storey Extension in Sheffield (2026)
If you're looking at single storey extension in Sheffield right now, you should be seeing quotes in the £1,710 to £3,040 range per m². That's based on current South Yorkshire contractor rates and the wider UK market. Anything well outside those numbers is worth questioning before you sign.
About single storey extension in Sheffield
Sheffield is a major city of around 584,000 in South Yorkshire. The housing is mostly red-brick Victorian terraces, stone-built millworker housing and post-war semi-detached estates typical of Northern industrial towns. That matters: older properties usually mean more pipework, rewiring and retrofit surprises, while newer builds in districts like S1, S2, S3 tend to be quicker jobs with standardised fittings. Local trade prices sit in the same ballpark as the UK average, with South Yorkshire firms quoting close to national rates.
Yorkshire is one of the better-value regions for trade work thanks to competitive wages and a deep contractor pool. Leeds, Sheffield and York sit close to the UK average; Hull, Grimsby and the former industrial towns run well below it. TrustMark and Buy With Confidence are widely adopted — worth asking for.
Building jobs are labour-heavy, and materials have moved fast — brick, timber, steel, insulation and board are all 20 to 40 percent up on pre-2022. FMB and TrustMark are your best signposts for a proper builder. On anything bigger than a loft conversion, get a Building Control officer involved from day one; fixing non-compliance later costs a fortune.
Single Storey Extension cost breakdown in Sheffield
Simple rear extension with standard finish
Open-plan kitchen extension with bi-fold doors
Wrap-around or glazed extension with lantern roof and structural steels
What affects the price of single storey extension in Sheffield?
- Ground conditions and foundation depth
- Glazing ratio (bi-folds, roof lights)
- Kitchen refit included
- Structural steels and knock-through
- Planning permission vs PD
Sheffield vs the UK average
Sheffield sits in the building & construction market at a cost multiplier of 0.95× the UK national average. That puts Sheffield single storey extension prices at £1,710–£3,040 versus the UK average of £1,800–£3,200 per m².
Single Storey Extension cost calculator — Sheffield
Estimate based on live 2025 UK trade pricing. Always get 3 written quotes before committing.
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What's typically included in a single storey extension quote
- Foundations and drainage
- Brick and block shell
- Roof and glazing
- First and second fix
- Plaster and decoration
Frequently asked questions
How much does single storey extension cost in Sheffield?
Budget £1,710 to £3,040 per m² for single storey extension in Sheffield. Prices here are around 5% cheaper than the UK average. What moves a quote inside that range is mostly building contractor day rates in South Yorkshire and the specific material list for your job.
How long does single storey extension take in Sheffield?
A straightforward single storey extension job in Sheffield runs to 10–16 weeks. You can lose days to things outside the contractor's control — parts on backorder, awkward access, or a firm slotting your job around existing bookings. Ask for a start date and expected finish up front.
What's included in the price of single storey extension in Sheffield?
A proper single storey extension quote in Sheffield should cover: Foundations and drainage; Brick and block shell; Roof and glazing; First and second fix; Plaster and decoration. If any of those aren't itemised on your quote, push back and ask. A written guarantee with a clear warranty period is reasonable to expect on this kind of work.
Is single storey extension cheaper in Sheffield than the UK average?
Single Storey Extension in Sheffield runs around 5% cheaper than the UK average. The UK-wide benchmark for this job is £1,800 to £3,200 per m²; Sheffield quotes tend to land between £1,710 and £3,040. Handy to know what the average actually looks like before you price round.
Do I need planning permission for single storey extension in Sheffield?
Most rear extensions fall under Permitted Development (up to 6m terraced/8m detached with Prior Approval). Side extensions and Article 4 areas require full planning. If the property sits in a conservation area or is listed, ring South Yorkshire Council before you book anything in. It's a free call and saves a world of grief later.
See all single storey extension prices across the UK or browse all tradespeople costs in Sheffield.