Selkirk, Scottish Borders
Single-storey rear extension in Selkirk
Ground-floor space across the back of the house, usually for a kitchen, dining or family room. We design, get the approvals for and build single-storey rear extensions in Selkirk and the surrounding area, with one contract from the first survey to building control sign-off.
Selkirk and its postcode districts TD7 are part of our Scottish Borders coverage. On sandstone villas, semis and four-in-a-block flats like those around Selkirk, a single-storey rear extension is usually the simplest way to fix a small back kitchen without touching the bedrooms.
Book a free site visit
Tell us about the house and we'll call to arrange a free, no-obligation visit.
How much does a single-storey rear extension cost in Selkirk?
For Selkirk we work from the Scotland rate: £1,800–£2,940 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) | £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 for a single-storey rear extension in Selkirk?
Here is how the rules in Scotland apply to a single-storey rear extension in Selkirk.
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.
Scotland has no larger-extension prior approval route; extensions beyond permitted development need a planning application.
Classes 1A and 1B do not apply in conservation areas, and listed buildings need listed building consent. Before any drawing we look up the property's history with the council, because earlier extensions and removed rights change the answer.
What are homes in Selkirk like to extend?
Selkirk 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 a single-storey rear extension in Selkirk comes together
Survey visit
We visit free of charge, measure up, check access, drainage and neighbours' extensions, and note what you want the room to do.
Design and guide price
Two or three layout options with a guide price for each, so you choose the design knowing what it costs.
Approvals
Permitted development check or planning application, then building warrant drawings and structural calculations, plus a written agreement with neighbours for any shared-wall work.
Fixed price and build
A written price for the agreed design, a start date and a named contact through the build, ending with the accepted completion certificate.
Single-storey rear extensions near Selkirk
From Selkirk, the nearest places we also cover are Galashiels (4.8 miles) and Hawick (8.9 miles).
- Single-storey rear extension in Galashiels
- Single-storey rear extension in Hawick
- Single-storey rear extension in Peebles
- Single-storey rear extension in Kelso
- Single-storey rear extension in Mayfield
Other work in Selkirk:
FAQ
Single-storey rear extension questions in Selkirk
Do you handle building control in Selkirk?
Yes. We apply for the building warrant before work starts and submit the completion certificate at the end.
What postcode areas do you cover around Selkirk?
Including TD7, and the surrounding Scottish Borders area.
Does it add value to the house?
Nationwide's October 2025 house price research found that a 10% increase in floor area is linked to about 5% higher value on average. It is a guide, not a promise; local agents can tell you what extended homes on your street sell for.
Who will build my extension?
Vetted building teams working under contract to us. Your contract is with S&K Property Investments and Improvement Ltd for the design and the build.
Do I need planning permission for a rear extension in Selkirk?
Many single-storey rear extensions are permitted development under Class 1A, but not in conservation areas; you always need a building warrant before work starts.
Can you match the brick or stone on my Selkirk house?
We source the closest match and show you samples before ordering; reclaimed materials are often the best match on older houses.