Helensburgh, Glasgow and the Clyde
Bungalow rear extension in Helensburgh
For homes in Helensburgh, a bungalow rear extension is often the simplest way to gain space without moving. Single-storey rear extensions that keep everything on one level. We take it from survey to completion certificate.
We cover Helensburgh (G84) as part of our Glasgow and the Clyde work. For Helensburgh bungalows we design the roof first, because the low eaves decide the height of the new room.
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 Helensburgh?
In Helensburgh, our guide for a bungalow rear extension is £1,760–£2,850 per square metre including VAT for a standard specification. 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 |
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 bungalow rear extension in Helensburgh?
Planning for a bungalow rear extension in Helensburgh 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. 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 Helensburgh like to extend?
Post-war semis and terraces are common around Helensburgh, and many have room for a single-storey rear extension within Class 1A limits.
How a bungalow rear extension in Helensburgh 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.
Design and guide price
Two or three layout options with a guide price for each, so you choose the design knowing what it costs.
Planning and regulations
We take the design through the right planning route, then produce the construction drawings and engineer's calculations for the building warrant.
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 Helensburgh
From Helensburgh, the nearest places we also cover are Greenock (4.2 miles) and Gourock (4.7 miles).
- Bungalow rear extension in Greenock
- Bungalow rear extension in Gourock
- Bungalow rear extension in Port Glasgow
- Bungalow rear extension in Vale of Leven
- Bungalow rear extension in Dumbarton
Other work in Helensburgh:
FAQ
Bungalow rear extension questions in Helensburgh
Do I need planning permission for a rear extension in Helensburgh?
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.
Do I need to move out?
Rarely; the opening into the bungalow is made late in the build.
How much does a bungalow rear extension cost in Helensburgh?
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.
Is the site visit in Helensburgh free?
Yes. We visit, measure up and talk through the options with no cost and no obligation.
Do you handle building control in Helensburgh?
Yes. We apply for the building warrant before work starts and submit the completion certificate at the end.