Dumbarton, Glasgow and the Clyde
Bungalow rear extension in Dumbarton
We plan and build rear extensions for bungalows for homeowners in Dumbarton. Single-storey rear extensions that keep everything on one level. Start with a free site visit, then a written price once the design is agreed.
Dumbarton is covered from our Glasgow and the Clyde round, including G82. For bungalows in Glasgow and the Clyde, a rear extension is the usual way to add space without adding stairs.
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 bungalow rear extension cost in Dumbarton?
Guide prices for a bungalow rear extension in Dumbarton start from our Scotland rate of £1,760–£2,850 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) | £21,000–£34,000 |
| 4 m wide × 6 m deep (24 m²) | £42,000–£68,500 |
These are guide ranges; the written quote after the survey is the figure that counts.
Do you need planning permission for a bungalow rear extension in Dumbarton?
Planning for a bungalow rear extension in Dumbarton 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.
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 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 bungalow 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.
Options and costs
We draw layout options and price each one, so the budget shapes the design rather than surprising you later.
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.
Bungalow rear extensions near Dumbarton
From Dumbarton, the nearest places we also cover are Vale of Leven (1.9 miles) and Port Glasgow (4.6 miles).
- Bungalow rear extension in Vale of Leven
- Bungalow rear extension in Port Glasgow
- Bungalow rear extension in Erskine
- Bungalow rear extension in Clydebank
- Bungalow rear extension in Greenock
Other work in Dumbarton:
FAQ
Bungalow rear extension questions in Dumbarton
How much does a bungalow rear extension cost in Dumbarton?
As a guide, £1,760–£2,850 per square metre including VAT for a standard specification. For example, 3 m wide × 4 m deep (12 m²): about £21,000–£34,000 at that rate. Your written price follows the survey.
Do I need a party wall agreement?
Scotland has no Party Wall Act; we agree access and protection with your neighbour in writing instead.
Can I extend the loft as well?
Sometimes, but that is a different project; a rear extension keeps everything on one level.
Can you match the brick or stone on my Dumbarton house?
We source the closest match and show you samples before ordering; reclaimed materials are often the best match on older houses.
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.
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.