Coatbridge, Lanarkshire
Semi-detached rear extension in Coatbridge
Single or two-storey extensions for semi-detached houses, with side access and one party wall. If you live in Coatbridge and want to know what a semi-detached rear extension would cost and whether it needs planning, start with the online guide price or a free site visit.
Coatbridge is covered from our Lanarkshire round, including ML5. In Coatbridge we measure the attached neighbour's extension at the survey, because it often sets the sensible depth for yours.
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 Coatbridge?
Guide prices for a semi-detached rear extension in Coatbridge 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 Coatbridge?
Whether your semi-detached rear extension in Coatbridge needs a planning application depends on its size, your house and any local restrictions.
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.
In Scotland an extension of more than one storey is only permitted development (Class 1B) if no part is within 10 metres of any boundary and it is no higher than the existing house, so almost every two-storey rear extension needs planning permission and a building warrant.
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. We check your house's planning history and any conservation area before drawing, so the route is clear before you spend on plans.
What are homes in Coatbridge like to extend?
Post-war semis and terraces are common around Coatbridge, and many have room for a single-storey rear extension within Class 1A limits. Semi-detached houses are common across Lanarkshire, and their side access makes rear extensions quicker to build.
How a semi-detached rear extension in Coatbridge 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.
Drawings and budget
Floor plans and elevations for the options, each with a guide price.
Paperwork handled
Planning or permitted development, the building warrant, structural design and neighbour agreements are all handled by us.
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 Coatbridge
Close by, we work in Airdrie, about 1.7 miles away, and Viewpark, about 2.7 miles away.
- Semi-detached rear extension in Airdrie
- Semi-detached rear extension in Viewpark
- Semi-detached rear extension in Bellshill
- Semi-detached rear extension in Mossend
- Semi-detached rear extension in Motherwell
Other work in Coatbridge:
FAQ
Semi-detached rear extension questions in Coatbridge
Can I live at home while the extension is built?
Usually yes. Most of the work is outside until the back wall is opened near the end, and that stage is screened off.
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.
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 postcode areas do you cover around Coatbridge?
Including ML5, and the surrounding Lanarkshire area.
Do I need planning permission for a rear extension in Coatbridge?
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.
How much does a semi-detached rear extension cost in Coatbridge?
As a guide, £1,800–£2,940 per square metre including VAT for a standard specification. For example, 3 m wide × 4 m deep (12 m²): about £21,500–£35,500 at that rate. Your written price follows the survey.