Port Glasgow, Glasgow and the Clyde
Two-storey rear extension in Port Glasgow
For homes in Port Glasgow, a two-storey rear extension is often the simplest way to gain space without moving. A larger kitchen downstairs and an extra bedroom or bathroom upstairs, under one roof. We take it from survey to completion certificate.
We cover Port Glasgow (PA13, PA14 and PA15) as part of our Glasgow and the Clyde work. In Port Glasgow, a two-storey rear extension is worth comparing with the cost of moving once stamp duty, agents' and legal fees are counted.
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 two-storey rear extension cost in Port Glasgow?
Guide prices for a two-storey rear extension in Port Glasgow start from our Scotland rate of £1,710–£2,560 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 × 5 m footprint, two floors (30 m²) | £51,500–£77,000 |
| 4 m × 6 m footprint, two floors (48 m²) | £82,000–£123,000 |
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 two-storey rear extension in Port Glasgow?
Whether your two-storey rear extension in Port Glasgow needs a planning application depends on its size, your house and any local restrictions.
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.
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 Port Glasgow like to extend?
Post-war semis and terraces are common around Port Glasgow, and many have room for a single-storey rear extension within Class 1A limits.
How a two-storey rear extension in Port Glasgow 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.
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.
Two-storey rear extensions near Port Glasgow
Close by, we work in Greenock, about 2.9 miles away, and Dumbarton, about 4.6 miles away.
- Two-storey rear extension in Greenock
- Two-storey rear extension in Dumbarton
- Two-storey rear extension in Vale of Leven
- Two-storey rear extension in Helensburgh
- Two-storey rear extension in Gourock
Other work in Port Glasgow:
FAQ
Two-storey rear extension questions in Port Glasgow
Can you match the brick or stone on my Port Glasgow house?
We source the closest match and show you samples before ordering; reclaimed materials are often the best match on older houses.
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.
Will we need to move out?
Rarely. The first-floor opening is made late in the job and sealed with temporary screens.
Do you handle building control in Port Glasgow?
Yes. We apply for the building warrant before work starts and submit the completion certificate at the end.
Do I need planning permission for a rear extension in Port Glasgow?
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 two-storey rear extension cost in Port Glasgow?
As a guide, £1,710–£2,560 per square metre including VAT for a standard specification. For example, 3 m × 5 m footprint, two floors (30 m²): about £51,500–£77,000 at that rate. Your written price follows the survey.