Edinburgh Home Extensions: Planning Permission & Building Warrant Guide

Scotland's permitted development rights allow homeowners to extend without full planning permission in many cases. Under the Town and Country Planning (General Permitted Development) (Scotland) Amendment Order 2011, a single-storey rear extension can generally be built without permission if it doesn't exceed 20m² of new floorspace, doesn't cover more than half the garden and doesn't protrude beyond the rear wall of the original house by more than 3 metres (semi-detached/terraced) or 4 metres (detached).

However, Edinburgh's extensive Article 4 Directions — applied to conservation areas across the New Town, Old Town, Grange, Stockbridge and other areas — remove many permitted development rights. Always check with our Edinburgh planning team whether your specific property and postcode is subject to an Article 4 Direction before assuming you can build without permission.

A full planning application to Edinburgh City Council is required for: extensions exceeding permitted development limits, properties in conservation areas subject to Article 4 Directions, listed buildings (which also require Listed Building Consent), double-storey or first-floor side extensions and extensions that affect shared boundaries significantly.

Ednburgh City Council typically takes 2–4 months to process a planning application. Neighbour notification is required — adjacent properties receive formal notice and have 21 days to comment. Applications near the UNESCO World Heritage Site boundary face additional scrutiny from Historic Environment Scotland.

Our in-house design and planning team prepares full planning drawings, design and access statements, and handles all correspondence with Edinburgh City Council. We have an excellent approval record across the city, including conservation areas.

Unlike England and Wales where Building Regulations apply, Scotland has its own Building Standards system administered locally. Every structural extension in Edinburgh requires a Building Warrant from Edinburgh City Council's Building Standards team before work commences.

The warrant process involves submission of detailed drawings, structural calculations and specification documents. Edinburgh Building Standards then reviews and approves the plans before you can legally begin construction. Once the extension is built, a completion inspection is arranged and a Completion Certificate issued.

Building Warrant approval in Edinburgh typically takes 4–8 weeks. Our team prepares all warrant documentation in-house, working with structural engineers and specialist consultants where required. We handle all correspondence with Edinburgh Building Standards throughout the project.

Edinburgh extension costs vary widely by type, specification and location. Single-storey rear extensions typically cost £2,500–£3,500 per m² in Edinburgh in 2025. A 20m² kitchen extension would therefore cost approximately £50,000–£70,000 fully fitted. Double-storey extensions range from £3,000–£4,500 per m² depending on complexity.

Edinburgh's labour market and material costs are broadly comparable to other major UK cities. Conservation area work and listed building projects add 10–20% to costs due to sympathetic material requirements (matching sandstone, lime mortar, sash windows etc.) and additional design work.

Most Edinburgh homeowners recoup 60–75% of extension costs in added property value, making quality extensions a sound investment in the city's competitive property market.