Aberdeen and Aberdeenshire
Flat-roof rear extensions in Aberdeen and Aberdeenshire
Warm flat roofs with lanterns, parapets and long-life membranes. Across Aberdeen and Aberdeenshire we handle the whole rear extension: survey, drawings, the planning route, building control and the build. Towns we cover here include Aberdeen, Peterhead and Nigg.
Flat roofs are the usual choice for rear extensions because they stay below first-floor windows and take a lantern neatly. Post-war semis and terraces are common around Aberdeen and Aberdeenshire, and many have room for a single-storey rear extension within Class 1A limits.
How much does a flat-roof rear extension cost in Aberdeen and Aberdeenshire?
In Aberdeen and Aberdeenshire, our guide for a flat-roof rear extension is £1,800–£2,940 per square metre including VAT for a standard specification. Prices in Scotland sit a little below our West Midlands baseline; building warrant fees and drawings are budgeted separately.
| Size | Guide price inc VAT |
|---|---|
| 3 m wide × 4 m deep (12 m²) | £21,500–£35,500 |
| 4 m wide × 5 m deep (20 m²) | £36,000–£59,000 |
| 4 m wide × 6 m deep (24 m²) | £43,500–£70,500 |
Your written price follows a measured survey and an agreed design, so it reflects your house, not an average.
Do you need planning permission in Aberdeen and Aberdeenshire?
In Scotland a single-storey rear extension can be permitted development under Class 1A: eaves no higher than 3 metres and an overall height of 4 metres, and where any part is within 1 metre of a boundary it can project no more than 3 metres on a terraced house or 4 metres on other houses. The rights do not apply in conservation areas, and a building warrant is still needed before work starts.
Insulation and glazing follow Section 6 of the Scottish Technical Handbook; the building warrant drawings show how the extension meets it.
Classes 1A and 1B do not apply in conservation areas, and listed buildings need listed building consent.
Where in Aberdeen and Aberdeenshire do we work?
FAQ
Questions people ask
How long does a flat roof last?
A well-built single-ply or GRP warm roof typically lasts 25 years or more.
Is a flat roof really flat?
No; it is built to falls so water drains to outlets or gutters.
Can I walk on it?
Not as a balcony without planning permission and a guarding design; it can be accessed for maintenance.
Do you cover all of Aberdeen and Aberdeenshire?
We cover 8 towns and districts in Aberdeen and Aberdeenshire, including Aberdeen, Peterhead and Nigg.
Who builds the extension?
Vetted building teams working under contract to us; your contract is with S&K Property Investments and Improvement Ltd.