Troon, Ayrshire
Single-storey rear extension in Troon
Ground-floor space across the back of the house, usually for a kitchen, dining or family room. If you live in Troon and want to know what a single-storey rear extension would cost and whether it needs planning, start with the online guide price or a free site visit.
Troon is covered from our Ayrshire round, including KA10. A single-storey rear extension in Troon is mostly built from the garden side, so the house stays usable for most of the job.
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 single-storey rear extension cost in Troon?
In Troon, our guide for a single-storey rear extension is £1,800–£2,940 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) | £21,500–£35,500 |
| 4 m wide × 5 m deep (20 m²) | £36,000–£59,000 |
| 4 m wide × 6 m deep (24 m²) | £43,500–£70,500 |
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 single-storey rear extension in Troon?
The planning route for a single-storey rear extension in Troon is set by Scotland's householder rules and your council.
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 Troon like to extend?
Post-war semis and terraces are common around Troon, and many have room for a single-storey rear extension within Class 1A limits.
How a single-storey rear extension in Troon 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.
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.
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.
Single-storey rear extensions near Troon
Neighbouring places we cover include Prestwick (4.5 miles) and Irvine (5.2 miles).
- Single-storey rear extension in Prestwick
- Single-storey rear extension in Irvine
- Single-storey rear extension in Ayr
- Single-storey rear extension in Kilwinning
- Single-storey rear extension in Saltcoats
Other work in Troon:
FAQ
Single-storey rear extension questions in Troon
How long does a rear extension take to build in Troon?
Most single-storey rear extensions take 10 to 16 weeks on site and two-storey extensions 16 to 26 weeks, after design and approvals.
Do I need planning permission for a rear extension in Troon?
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 the extension make the room behind it dark?
Not if it is designed well. Rooflights or a lantern over the old back room, and a wide opening into it, keep daylight reaching the middle of the house.
Can you match the brick or stone on my Troon house?
We source the closest match and show you samples before ordering; reclaimed materials are often the best match on older houses.
Do you handle building control in Troon?
Yes. We apply for the building warrant before work starts and submit the completion certificate at the end.
What postcode areas do you cover around Troon?
Including KA10, and the surrounding Ayrshire area.