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Scotland

Rear extension cost in Edinburgh

Single-storey rear extensions opening kitchens, dining and living space onto the garden — usually 30–50 m².

Local context — Edinburgh

Council
City of Edinburgh Council
Open planning portal →
Cost premium
+8% vs UK average (Scottish capital labour premium + stone-build complexity)
Typical extension price
A 25 m² single-storey rear extension in Edinburgh typically runs £62,000-£92,000 (standard to premium, 2026). Tenement flat refurbs in New Town/Marchmont run £55,000-£95,000 plus shared-stair common works.
Building Control
Edinburgh uses the Scottish Building Warrant system, not the English Building Regulations — warrants must be approved BEFORE work starts and average 8-12 weeks. Completion certificates are mandatory; without one, sale of the property is blocked.
Conservation & Article 4
Almost the entire pre-1900 city is conservation area — New Town and Old Town are also UNESCO World Heritage. Article 4 directions remove PD rights across most of central Edinburgh; even rooflights and chimney removal need consent. Listed buildings number 4,500+ within the city.
Local quirks that move the price
Tenement common repairs (roof, stair, drains) are shared by all flat owners under the Tenements (Scotland) Act 2004 — budget £2-12k of unexpected shared liability. Edinburgh sandstone matching is mandatory on visible elevations — reclaimed Craigleith/Hailes stone runs £140-220/m². Steep volcanic geology around Arthur's Seat occasionally requires rock-breaking for foundations.
High-demand areas in Edinburgh
New TownMarchmontMorningsideStockbridgeBruntsfield
Typical 40 m² project in Edinburgh
£60,332
to
£97,110
Mid-range (premium spec): £78,714
standard
£60,332
premium
£78,714
luxury
£97,110
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Rear extension costs in Edinburgh — FAQs

How much does a rear extension cost in Edinburgh?

Rear extensions in Edinburgh typically cost between £60,332 and £97,110 depending on size, specification and site conditions. A mid-range 40 m² project averages around £78,714.

How long will it take?

Most rear extensions take between 6 and 16 weeks on site, depending on scope, structural complexity and planning requirements in Scotland.

Do I need planning permission?

Many rear extensions fall under permitted development, but conservation areas, listed buildings and larger projects in Edinburgh 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.