Scottish Borders
Glazed and glass-box rear extensions in the Scottish Borders
Full-height glass, slim frames and big rooflights for the most open rear room. Rear extensions in the Scottish Borders: we cover 5 towns including Hawick, Galashiels and Peebles, with design, approvals and the build under one contract.

If your garden in Hawick faces south, expect us to talk about overhangs and solar-control glass before frame colours. Scottish Borders has sandstone villas and terraces, post-war semis and four-in-a-block flats. Flats need planning permission for an extension, and every project needs a building warrant before work starts.
How much does a glazed rear extension cost in the Scottish Borders?
Guide prices for a glazed rear extension in the Scottish Borders start from our Scotland rate of £2,660–£4,560 per square metre, including VAT. 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) | £32,000–£54,500 |
| 4 m wide × 6 m deep (24 m²) | £64,000–£109,500 |
These are guide ranges; the written quote after the survey is the figure that counts.
Do you need planning permission in the Scottish Borders?
Scottish householder permitted development (Class 1A) covers many single-storey rear extensions, with a 3 metre eaves limit, a 4 metre height limit and, within 1 metre of a boundary, a depth limit of 3 metres for terraced houses or 4 metres for others. Conservation areas are excluded, and you need a building warrant whatever the planning position.
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 the Scottish Borders do we work?
FAQ
Questions people ask
Will a glass extension be too hot?
Not if it is designed for its orientation, with solar-control glass, shading and ventilation.
Sliding or bifold doors?
Sliders give bigger panes and slimmer sightlines; bifolds open the whole width. Our guide compares them.
Can I have a level threshold?
Yes, with a drainage channel outside the doors and the slab set to the patio level.
Do you cover all of the Scottish Borders?
We cover 5 towns and districts in the Scottish Borders, including Hawick, Galashiels and Peebles.
Who builds the extension?
Vetted building teams working under contract to us; your contract is with S&K Property Investments and Improvement Ltd.