Dumfries and Galloway
Glazed and glass-box rear extensions in Dumfries and Galloway
Full-height glass, slim frames and big rooflights for the most open rear room. We design and build rear extensions across Dumfries and Galloway, from Dumfries and Stranraer to Annan, covering single-storey kitchen extensions, two-storey additions, side returns and wraparounds.
Glass-led rear extensions in Dumfries are planned around which way the garden faces, because that decides the glass specification. Post-war semis and terraces are common around Dumfries and Galloway, and many have room for a single-storey rear extension within Class 1A limits.
How much does a glazed rear extension cost in Dumfries and Galloway?
For Dumfries and Galloway we work from the Scotland rate: £2,660–£4,560 per square metre of new floor, including VAT, 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) | £32,000–£54,500 |
| 4 m wide × 6 m deep (24 m²) | £64,000–£109,500 |
We put a fixed price in writing once the design is agreed, and explain any provisional sums such as foundations.
Do you need planning permission in Dumfries and Galloway?
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 Dumfries and Galloway 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 Dumfries and Galloway?
We cover 4 towns and districts in Dumfries and Galloway, including Dumfries, Stranraer and Annan.
Who builds the extension?
Vetted building teams working under contract to us; your contract is with S&K Property Investments and Improvement Ltd.