Ayrshire
Rear extensions in Irvine
Rear extensions in Irvine: single-storey and two-storey extensions, side returns, wraparounds and glass-led designs, planned around sandstone villas, semis and four-in-a-block flats and the Scottish rules.
Irvine is in Ayrshire, with postcode districts including KA11 and KA12. The nearest places we also cover are Kilwinning (3.1 miles) and Saltcoats (5.2 miles).
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Rear extensions we build in Irvine
- Single-storey rear extensions
- Two-storey rear extensions
- Kitchen-diner rear extensions
- Side return extensions
- Wraparound extensions
- Glazed and glass-box rear extensions
- Rear extensions for terraced houses
- Rear extensions for semi-detached houses
- Rear extensions for bungalows
- Rear extension plans and planning applications
Also available across Ayrshire:
- Rear extensions for detached houses
- Flat-roof rear extensions
- Pitched and lean-to roof rear extensions
- Knocking through to a rear extension
- Roof lanterns and rooflights for rear extensions
- Permitted development rear extensions
- Building Regulations for rear extensions
Rear extension prices in Irvine
Prices in Scotland sit a little below our West Midlands baseline; building warrant fees and drawings are budgeted separately.
| Example | Guide inc VAT |
|---|---|
| Single-storey, 3 m × 4 m (12 m²) | £21,500–£35,500 |
| Single-storey, 4 m × 6 m (24 m²) | £43,500–£70,500 |
| Two-storey, 3 m × 5 m footprint (30 m²) | £51,500–£77,000 |
| Side return, about 14 m² | £30,500–£50,500 |
| Wraparound, about 25 m² | £52,500–£85,500 |
What are homes in Irvine like to extend?
Irvine has sandstone villas and terraces, post-war semis and four-in-a-block flats. Flats need planning permission for an extension, and every project needs a building warrant before work starts.
Planning rules for Irvine
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.
Scottish extensions are approved by building warrant, granted by the council's building standards team before work begins, with a completion certificate submitted when the work is finished.
Nearby towns
FAQ
Questions people ask
How much is a rear extension in Irvine?
A 3 m × 4 m single-storey rear extension is about £21,500–£35,500 including VAT at our Scotland guide rates; the written price follows a survey.
Do I need planning permission in Irvine?
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.
Is the site visit in Irvine free?
Yes, with no obligation.
Do I need a party wall agreement?
Scotland has no Party Wall Act; we agree access and protection with your neighbour in writing instead.