Two-storey extensions in Kilbirnie
Need more room in Kilbirnie? Two-storey and first-floor extensions add bedrooms and living space without moving. Here's everything we offer locally.
Kilbirnie at a glance
- Postcode districts
- KA14 and KA25
- Area
- Ayrshire, Scotland
- Price region
- Scotland
- Nearest towns
- Beith (2 miles), Dalry (3.1 miles), Kilwinning (6.8 miles), Largs (7.5 miles)
- Distance to Kilmarnock
- about 12.2 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.
Kilbirnie sits about 12.2 miles from Kilmarnock. Closer to home, Beith is 2.0 miles away and Dalry 3.1 miles.
Extensions available in Kilbirnie

Two-storey rear extensions
From £52,500 in Kilbirnie. Free visit to firm it up.
Learn more
Two-storey side extensions
Design, approvals and build for Kilbirnie homes. Guide from £81,000.
Learn more
Two-storey wraparound extensions
Design, approvals and build for Kilbirnie homes. Guide from £113,000.
Learn more
Part single, part two-storey extensions
Our Scotland guide starts at £67,500 for this type.
Learn more
Extensions over a garage
Design, approvals and build for Kilbirnie homes. Guide from £29,500.
Learn more
First-floor extensions
For homes in Kilbirnie: typical guide from £23,500.
Learn more
Two-storey extensions for semi-detached houses
For homes in Kilbirnie: typical guide from £52,500.
Learn more
Two-storey extensions for detached houses
For homes in Kilbirnie: typical guide from £81,000.
Learn more
Kitchen extensions with bedrooms above
Design, approvals and build for Kilbirnie homes. Guide from £52,500 (before kitchen units).
Learn more
Extra bedroom and en-suite extensions
Guide from £52,500 (plus en-suite) in Kilbirnie, including VAT.
Learn moreWhich type suits your house?
If you're not sure which type fits, that's what the free visit is for. We'll sketch the realistic options for your house in Kilbirnie, with a rough idea of the approval route and cost for each.
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 Kilbirnie
Kilbirnie 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 Kilbirnie
Do you cover Kilbirnie?
Yes. We cover Kilbirnie (KA14 and KA25) and the surrounding area, including Beith and Dalry. The first site visit is free.
What does a two-storey extension cost in Kilbirnie?
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 Kilbirnie do you cover?
Everywhere around it, including Beith (2 miles), Dalry (3.1 miles) and Kilwinning (6.8 miles), and the rest of Ayrshire.