• 1,200+
    Verified builders
  • 18,000+
    Homeowners served
  • < 90s
    Avg. estimate time
  • 4hrs / week
    Average time saved on quoting
South Yorkshire

Side return extension cost in Sheffield

Infill side-return extensions on Victorian and Edwardian terraces — opening up the kitchen and adding 8–15 m² of usable floor space.

Local context — Sheffield

Council
Sheffield City Council
Open planning portal →
Cost premium
-11% vs UK average (South Yorkshire labour rates, lowest of the major cities)
Typical extension price
A 25 m² single-storey rear extension in Sheffield typically runs £44,000-£68,000 (standard to premium, 2026). Stone-fronted Victorian terraces in Nether Edge/Sharrow run £42,000-£62,000.
Building Control
Sheffield Building Control is the council's in-house service; lead time 3-5 working days. Private Approved Inspectors are widely used in S7, S10 and S11.
Conservation & Article 4
Sheffield has 40+ conservation areas including Nether Edge, Sharrow Vale, Broomhill, Ranmoor and Endcliffe. Article 4 directions covering HMO use apply across most of S10 and S11 — relevant for landlord clients.
Local quirks that move the price
Steep west-Sheffield sites (S10, S11, S17) regularly add £5-12k for access scaffolding and split-level structural work. Coal Authority searches required across most of east and south Sheffield (S2, S5, S8, S9, S13). Local sandstone matching adds £70-120/m² to front-elevation works compared with brick.
High-demand areas in Sheffield
Nether EdgeEcclesallCrookesWalkleyBroomhill
Typical 12 m² project in Sheffield
£20,843
to
£31,793
Mid-range (premium spec): £26,306
standard
£20,843
premium
£26,306
luxury
£31,793
Get my free instant estimateI'm a builder — get listed

What's typically included

Side return extension costs in Sheffield — FAQs

How much does a side return extension cost in Sheffield?

Side return extensions in Sheffield typically cost between £20,843 and £31,793 depending on size, specification and site conditions. A mid-range 12 m² project averages around £26,306.

How long will it take?

Most side return extensions take between 6 and 16 weeks on site, depending on scope, structural complexity and planning requirements in South Yorkshire.

Do I need planning permission?

Many side return extensions fall under permitted development, but conservation areas, listed buildings and larger projects in Sheffield can require a full planning application. Use the cost checker to see what applies to your address.

Get an instant estimate for your project

Answer 6 quick questions and we'll generate a full cost breakdown — line items, regional uplift, contingency and VAT.

Start my side return extension estimate

Side return extension in other UK cities

Other project costs in Sheffield

Get the Sheffield side return extension cost guide

We'll email you this guide plus monthly UK renovation cost updates. No spam, unsubscribe anytime.

Disclaimer: This is an industry-informed estimate for guidance only — not a fixed quote, valuation, survey or legal advice. Figures are based on regional averages and the details you provided. Site-specific factors (access, ground conditions, structural surprises, planning constraints) can materially change the cost. Always confirm with a site inspection, written quotes from qualified tradespeople, and supplier pricing before committing to work. Build Price IQ (trading under Services R Us Ltd) accepts no liability for any decisions, costs, losses or damages arising from the use of these estimates.