Two-storey extensions in Cumnock
Everything for a two-storey extension in Cumnock, in one place: types, guide prices for Scotland, the approval rules in Scotland and how to get started.
Cumnock at a glance
- Postcode districts
- KA5 and KA18
- Area
- Ayrshire, Scotland
- Price region
- Scotland
- Nearest towns
- Prestwick (13.9 miles), Kilmarnock (14.1 miles), Ayr (14.4 miles), Troon (16.7 miles)
- Distance to Kilmarnock
- about 14.1 miles
- Approvals
- Class 1B: two-storey extensions must be at least 10 m from every boundary to avoid planning permission, so most need an application.
Around Cumnock we also work in Prestwick, Kilmarnock and Ayr, and across the rest of Ayrshire. Postcode districts in and near Cumnock: KA5 and KA18.
Extensions available in Cumnock

Two-storey rear extensions
From £52,500 in Cumnock. Free visit to firm it up.
Learn more
Two-storey side extensions
For homes in Cumnock: typical guide from £81,000.
Learn more
Two-storey wraparound extensions
Our Scotland guide starts at £113,000 for this type.
Learn more
Part single, part two-storey extensions
Guide from £67,500 in Cumnock, including VAT.
Learn more
Extensions over a garage
Guide from £29,500 in Cumnock, including VAT.
Learn more
First-floor extensions
Our Scotland guide starts at £23,500 for this type.
Learn more
Two-storey extensions for semi-detached houses
Guide from £52,500 in Cumnock, including VAT.
Learn more
Two-storey extensions for detached houses
Design, approvals and build for Cumnock homes. Guide from £81,000.
Learn more
Kitchen extensions with bedrooms above
From £52,500 (before kitchen units) in Cumnock. Free visit to firm it up.
Learn more
Extra bedroom and en-suite extensions
From £52,500 (plus en-suite) in Cumnock. Free visit to firm it up.
Learn moreWhich type suits your house?
Which type suits your house in Cumnock depends mostly on where you have room. A deep garden points to a rear extension; space beside the house points to a side or over-garage extension; a house that already has a single-storey extension can often take a first floor on top.
Also available in Ayrshire
- Two-storey front extensions
- Two-storey extensions for end-of-terrace houses
- Two-storey annexe extensions
- Garage conversions with a room above
- Two-storey extension plans and drawings
- Planning permission for two-storey extensions
- Structural engineering for two-storey extensions
- Building regulations for two-storey extensions
- Design and build two-storey extensions
Rules for Cumnock
Cumnock is in Scotland. Class 1B: two-storey extensions must be at least 10 m from every boundary to avoid planning permission, so most need an application. Householder planning application: £371. Councils have two months to decide a local planning application.
The full Scotland rules explained
Questions about extensions in Cumnock
Do you cover Cumnock?
Yes. We cover Cumnock (KA5 and KA18) and the surrounding area, including Prestwick and Kilmarnock. The first site visit is free.
What does a two-storey extension cost in Cumnock?
Using our Scotland guide, a two-storey rear extension with a 4 m × 3.5 m footprint on two floors (28 m² of new floor space) is about £52,500–£71,000 including VAT. An extension over a garage is about £29,500–£43,000.
Which other places near Cumnock do you cover?
Everywhere around it, including Prestwick (13.9 miles), Kilmarnock (14.1 miles) and Ayr (14.4 miles), and the rest of Ayrshire.