Highlands and Islands
Rear extensions for semi-detached houses in the Highlands and Islands
Single or two-storey extensions for semi-detached houses, with side access and one party wall. Rear extensions in the Highlands and Islands: we cover 5 towns including Inverness, Elgin and Nairn, with design, approvals and the build under one contract.
Island and remote addresses in the Highlands and Islands are by arrangement: we confirm whether we can take the job, and agree any travel costs, before the first visit.
Semi-detached houses are common across the Highlands and Islands, and their side access makes rear extensions quicker to build. Traditional stone houses sit alongside modern bungalows and timber-frame homes around the Highlands and Islands. A lighter, contrasting addition at the back often suits older stone houses better than trying to copy the walling.
How much does a semi-detached rear extension cost in the Highlands and Islands?
Guide prices for a semi-detached rear extension in the Highlands and Islands start from our Scotland rate of £1,800–£2,940 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) | £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 |
Ground conditions, glazing, the roof and how far the house is opened up move the final figure within the range.
Do you need planning permission in the Highlands and Islands?
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.
Scottish Class 1B rights for extensions of more than one storey need a 10 metre gap to every boundary, which few gardens have. Expect a planning application as well as a building warrant for a double-storey rear extension.
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.
Where in the Highlands and Islands do we work?
FAQ
Questions people ask
Can I match pebbledash or render?
Yes. Many semis are refinished with new render across the whole back elevation so old and new match.
Single or two-storey on a semi?
Two-storey if you need bedrooms, single-storey if you need a bigger kitchen. Planning risk is lower for single-storey.
What if my neighbour has already extended?
That can make a matching depth easier to justify. We measure theirs at the survey.
Do you cover all of the Highlands and Islands?
We cover 5 towns and districts in the Highlands and Islands, including Inverness, Elgin and Nairn. Remote and island addresses are by arrangement.
Who builds the extension?
Vetted building teams working under contract to us; your contract is with S&K Property Investments and Improvement Ltd.