Home extensions in Kilwinning
More space without moving: we plan and build extensions across Kilwinning, with one team for the drawings, the council and the build.
- Postcode districtsKA13
- Price regionScotland (×0.98)
- Planning rulesScotland
- Site visitFree, no obligation
What works best for Kilwinning houses?
Scotland's housing includes sandstone villas, terraces and tenements in the cities and plenty of post-war and modern houses and bungalows elsewhere. A building warrant is needed before work starts.
For many houses here, bungalow extensions, single-storey rear extensions or orangery extensions gives the most useful space for the budget.
Where we work near Kilwinning
Our survey diary covers Kilwinning, including KA13. Nearby, we also take on projects in Saltcoats (3 miles), Irvine (3 miles), Troon (8 miles), Kilmarnock (9 miles), Largs (12 miles). Just over the Renfrewshire and Inverclyde border, Johnstone is about 14 miles away.
Planning and building control in Kilwinning
In Scotland, householder permitted development rules (Class 1A for single-storey ground-floor extensions and Class 1B for extensions of more than one storey) allow some smaller extensions without a planning application, within limits on depth, height and distance from the boundary. Conservation areas and listed buildings are more restricted.
In a conservation area or national scenic area the householder permitted development rights are more limited, listed homes need listed building consent, and if rights have been removed by a condition or direction, any extension needs an application.
In Scotland a building warrant from the council is needed before work starts on almost any extension, and a completion certificate is issued when the work is accepted. Building standards are set in the Scottish technical handbooks.
Applications are decided by your council as planning authority.
Kilwinning extension prices at a glance
Every figure below is a guide for Kilwinning, adjusted for Scotland build costs (×0.98) and including VAT. Design and council fees are shown separately on each page.
| Extension type | Example size | Standard spec (inc VAT) |
|---|---|---|
| Double-storey extensions | 32 m² | £56,000 – £74,000 |
| Conservatory replacement extensions | 14 m² | £29,000 – £38,000 |
| Single-storey rear extensions | 20 m² | £40,000 – £51,000 |
| Wraparound extensions | 25 m² | £56,000 – £71,500 |
| Kitchen extensions | 20 m² | £41,000 – £52,000 |
| Side return extensions | 11 m² | £25,500 – £32,500 |
All extension types we build in Kilwinning
- Single-storey rear extensions · from £20,500
- Building regulations for extensions · from £850
- Glass box extensions · from £29,000
- Pitched roof extensions · from £21,500
- Extensions over a garage · from £23,500
- Wraparound extensions · from £35,000
- Timber frame extensions · from £20,500
- Kitchen extensions · from £26,000
- Double-storey extensions · from £37,000
- Bungalow extensions · from £25,500
- Annexe extensions · from £53,500
- Porch extensions · from £3,900
- Conservatory replacement extensions · from £19,500
- Flat roof extensions · from £20,500
- Home office extensions · from £15,500
- Extension plans and drawings · from £1,150
- Side return extensions · from £17,500
- Orangery extensions · from £29,000
- Bedroom extensions · from £25,000
- Utility and boot room extensions · from £13,500
- Side extensions · from £21,500
- Planning permission for extensions · from £300
Free site visit
We visit your Kilwinning home, measure up, talk through what you want and check the planning position.
Design and approvals
Once the layout is agreed, we deal with the council: planning permission or written confirmation that none is needed, plus building control.
Fixed written price
With the design and specification agreed, you get a fixed written price and a start date.
Build and sign-off
Work is carried out to the agreed programme, inspected by building control and signed off at the end.
Questions about extensions in Kilwinning
How much does an extension cost in Kilwinning?
Using our Scotland factor (×0.98), a standard-spec single-storey extension of 20 m² is a guide £40,000 to £51,000 including VAT, and a 32 m² two-storey extension £56,000 to £74,000. Your written price follows the survey.
How long does an extension take in Kilwinning?
Usually 2 to 4 months of design and approvals, then 10 to 16 weeks on site for a single-storey extension or 16 to 24 weeks for two storeys.
Do you handle building regulations?
Yes. We prepare the drawings and calculations, submit them and book inspections, and in Scotland we apply for the building warrant before work starts.
Do I need planning permission for an extension in Kilwinning?
Not always. It depends on the size, position and your property's history. Scottish householder rules allow some smaller extensions without an application, but a building warrant is still needed.
Can I get a price before anyone visits?
Yes. This page shows guide prices adjusted for Kilwinning, and the guide-price tool gives a range for your own size and finish in about a minute.
Book a free site visit in Kilwinning
We will measure up, check the planning position and give you honest guide figures.
- Free, no-obligation site visit
- Planning route checked before you spend on drawings
- Written price once the design is agreed
- Building control sign-off at the end
Prefer to talk? Call 0800 088 6341 or .
Book a free site visit
Tell us a little about the project and we will arrange a time.