Dumbarton, Glasgow and the Clyde
Terraced house rear extension in Dumbarton
Rear and side return extensions for terraces, with access through the house and two neighbours. If you live in Dumbarton and want to know what a terraced house rear extension would cost and whether it needs planning, start with the online guide price or a free site visit.
Dumbarton is covered from our Glasgow and the Clyde round, including G82. Terraced streets make up much of the housing in parts of Glasgow and the Clyde, and most rear extensions here go in without side access.
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 terraced house rear extension cost in Dumbarton?
Guide prices for a terraced house rear extension in Dumbarton start from our Scotland rate of £1,950–£3,140 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 × 4.5 m deep (13.5 m²) | £26,500–£42,500 |
| 3 m wide × 6 m deep (18 m²) | £35,000–£56,500 |
These are guide ranges; the written quote after the survey is the figure that counts.
Do you need planning permission for a terraced house rear extension in Dumbarton?
Whether your terraced house rear extension in Dumbarton needs a planning application depends on its size, your house and any local restrictions.
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.
There is no Party Wall Act in Scotland; neighbour matters are handled through the title deeds, common law and written agreement before work starts.
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 Dumbarton like to extend?
Dumbarton 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 terraced house rear extension in Dumbarton comes together
Look round and measure
A free visit to see the back of the house, measure it, check the drains and boundaries and hear what you need.
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.
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.
Terraced house rear extensions near Dumbarton
We also build rear extensions for terraced houses in nearby Vale of Leven (1.9 miles) and Port Glasgow (4.6 miles).
- Terraced house rear extension in Vale of Leven
- Terraced house rear extension in Port Glasgow
- Terraced house rear extension in Erskine
- Terraced house rear extension in Clydebank
- Terraced house rear extension in Greenock
Other work in Dumbarton:
FAQ
Terraced house rear extension questions in Dumbarton
Do you handle building control in Dumbarton?
Yes. We apply for the building warrant before work starts and submit the completion certificate at the end.
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.
How do you keep the house clean?
Dust screens, floor protection and a single protected route through the house.
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 Dumbarton?
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.
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.