Hawick, Scottish Borders
Semi-detached rear extension in Hawick
For homes in Hawick, a semi-detached rear extension is often the simplest way to gain space without moving. Single or two-storey extensions for semi-detached houses, with side access and one party wall. We take it from survey to completion certificate.
Hawick and its postcode districts TD9 are part of our Scottish Borders coverage. Semi-detached houses are common across the Scottish Borders, and their side access makes rear extensions quicker to build.
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 semi-detached rear extension cost in Hawick?
Guide prices for a semi-detached rear extension in Hawick 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 |
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 semi-detached rear extension in Hawick?
Planning for a semi-detached rear extension in Hawick follows the Scottish householder rules.
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. At the first visit we measure what is there now and tell you which route fits: permitted development or a planning application, plus the building warrant.
What are homes in Hawick like to extend?
Post-war semis and terraces are common around Hawick, and many have room for a single-storey rear extension within Class 1A limits.
How a semi-detached rear extension in Hawick comes together
Free site visit
We measure the house and garden, look at the back wall, drainage and boundaries, and talk through what you want from the space.
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.
Build and sign-off
We build to the approved drawings with regular updates, then hand over the accepted completion certificate and any guarantees from suppliers.
Semi-detached rear extensions near Hawick
We also build rear extensions for semi-detached houses in nearby Selkirk (8.9 miles) and Galashiels (13.3 miles).
- Semi-detached rear extension in Selkirk
- Semi-detached rear extension in Galashiels
- Semi-detached rear extension in Kelso
- Semi-detached rear extension in Peebles
- Semi-detached rear extension in Mayfield
Other work in Hawick:
FAQ
Semi-detached rear extension questions in Hawick
Do I need planning permission for a rear extension in Hawick?
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.
Do you handle building control in Hawick?
Yes. We apply for the building warrant before work starts and submit the completion certificate at the end.
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.
Can you match the brick or stone on my Hawick house?
We source the closest match and show you samples before ordering; reclaimed materials are often the best match on older houses.
Will I need a structural engineer?
Yes for the beam over the new opening and usually the foundations; we arrange them and their calculations go to building control.
Can I get a price without a visit?
Our online guide-price tool gives a range in a couple of minutes. A written price needs a survey.