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West Yorkshire

Double-storey extension cost in Leeds

Two-storey rear or side extensions adding kitchen/dining downstairs and a master bedroom or en-suite above — typically 40–60 m² of additional space.

Local context — Leeds

Council
Leeds City Council
Open planning portal →
Cost premium
-9% vs UK average (Yorkshire labour rates)
Typical extension price
A 25 m² single-storey rear extension in Leeds typically runs £46,000-£70,000 (standard to premium, 2026). Stone-fronted back-to-back conversions in Headingley/Burley run £40,000-£62,000.
Building Control
Leeds Building Control is the council's in-house service; lead time 3-5 working days. Private Approved Inspectors are heavily used in LS6, LS7, LS8 and LS17 where competition is fiercest.
Conservation & Article 4
Leeds has 70+ conservation areas including Headingley, Far Headingley, Roundhay, Chapel Allerton and Adel. Article 4 directions in parts of Headingley remove permitted development rights for HMO use and external alterations.
Local quirks that move the price
Yorkshire-stone front elevations across LS6/LS7/LS17 mean matching reclaimed stone is mandatory — budget £80-140/m² for stone vs £35-60/m² for brick. Historic mineworkings across south Leeds (LS10, LS11, LS27) require Coal Authority searches and sometimes grout-up at £4-10k. Heavy clay soils east of the city centre often need 1.5 m+ foundations.
High-demand areas in Leeds
HeadingleyRoundhayChapel AllertonHorsforthAlwoodley
Typical 50 m² project in Leeds
£74,918
to
£120,780
Mid-range (premium spec): £97,751
standard
£74,918
premium
£97,751
luxury
£120,780
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Double-storey extension costs in Leeds — FAQs

How much does a double-storey extension cost in Leeds?

Double-storey extensions in Leeds typically cost between £74,918 and £120,780 depending on size, specification and site conditions. A mid-range 50 m² project averages around £97,751.

How long will it take?

Most double-storey extensions take between 6 and 16 weeks on site, depending on scope, structural complexity and planning requirements in West Yorkshire.

Do I need planning permission?

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

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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.