Prestwick, Ayrshire
Semi-detached rear extension in Prestwick
Single or two-storey extensions for semi-detached houses, with side access and one party wall. If you live in Prestwick and want to know what a semi-detached rear extension would cost and whether it needs planning, start with the online guide price or a free site visit.
Prestwick is covered from our Ayrshire round, including KA7, KA8 and KA9. In Prestwick we measure the attached neighbour's extension at the survey, because it often sets the sensible depth for yours.
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 semi-detached rear extension cost in Prestwick?
A semi-detached rear extension in Prestwick is priced at £1,800–£2,940 per square metre including VAT as a guide, before kitchen fit-out and fees. 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 |
These are guide ranges; the written quote after the survey is the figure that counts.
Do you need planning permission for a semi-detached rear extension in Prestwick?
Whether your semi-detached rear extension in Prestwick needs a planning application depends on its size, your house and any local restrictions.
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.
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.
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 Prestwick like to extend?
Post-war semis and terraces are common around Prestwick, and many have room for a single-storey rear extension within Class 1A limits.
How a semi-detached rear extension in Prestwick 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.
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.
Semi-detached rear extensions near Prestwick
Neighbouring places we cover include Ayr (1.6 miles) and Troon (4.5 miles).
- Semi-detached rear extension in Ayr
- Semi-detached rear extension in Troon
- Semi-detached rear extension in Irvine
- Semi-detached rear extension in Kilmarnock
- Semi-detached rear extension in Kilwinning
Other work in Prestwick:
FAQ
Semi-detached rear extension questions in Prestwick
Do I need planning permission for a rear extension in Prestwick?
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.
Single or two-storey on a semi?
Two-storey if you need bedrooms, single-storey if you need a bigger kitchen. Planning risk is lower for single-storey.
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.
Is the site visit in Prestwick free?
Yes. We visit, measure up and talk through the options with no cost and no obligation.
How long does a rear extension take to build in Prestwick?
Most single-storey rear extensions take 10 to 16 weeks on site and two-storey extensions 16 to 26 weeks, after design and approvals.