Ardrossan, Ayrshire
Two-storey rear extension in Ardrossan
We plan and build two-storey rear extensions for homeowners in Ardrossan. A larger kitchen downstairs and an extra bedroom or bathroom upstairs, under one roof. Start with a free site visit, then a written price once the design is agreed.
Ardrossan and its postcode districts KA21 and KA22 are part of our Ayrshire coverage. In Ardrossan, 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 Ardrossan?
Guide prices for a two-storey rear extension in Ardrossan 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 |
Ground conditions, glazing, the roof and how far the house is opened up move the final figure within the range.
Do you need planning permission for a two-storey rear extension in Ardrossan?
The planning route for a two-storey rear extension in Ardrossan is set by Scotland's householder rules and your council.
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.
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 Ardrossan like to extend?
Post-war semis and terraces are common around Ardrossan, and many have room for a single-storey rear extension within Class 1A limits.
How a two-storey rear extension in Ardrossan 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.
Written price, then build
Once the design and approvals are in place, you get a fixed written price and programme, and we build through to sign-off.
Two-storey rear extensions near Ardrossan
Neighbouring places we cover include Saltcoats (1.3 miles) and Kilwinning (3.9 miles).
- Two-storey rear extension in Saltcoats
- Two-storey rear extension in Kilwinning
- Two-storey rear extension in Irvine
- Two-storey rear extension in Troon
- Two-storey rear extension in Largs
Other work in Ardrossan:
FAQ
Two-storey rear extension questions in Ardrossan
How much does a two-storey rear extension cost in Ardrossan?
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.
What postcode areas do you cover around Ardrossan?
Including KA21 and KA22, and the surrounding Ayrshire area.
Is two-storey cheaper per square metre than single-storey?
Usually yes, because the foundations and roof are shared across twice the floor area. The total cost is higher.
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.
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.
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.