Timber frame extensions in Kilwinning: design, approvals and build
If you live in Kilwinning and want more space without moving, a timber frame extension is one of the most practical ways to get it. We handle the drawings, approvals and the build.
- Guide price in KilwinningFrom £20,500 inc VAT
- PlanningScottish householder rules; building warrant needed
- Build time8–14 weeks on site
- Postcode districtsKA13
Extensions in and around Kilwinning
We cover Kilwinning and the postcode districts KA13. The same team covers Saltcoats (3 miles), Irvine (3 miles), Troon (8 miles), Kilmarnock (9 miles), all within easy reach.
Just over the Renfrewshire and Inverclyde border, Johnstone is about 14 miles away. 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.
What should I budget for a timber frame extension in Kilwinning?
These guide figures apply our Scotland adjustment (×0.98) to national rates. They include VAT at 20% and cover the build itself; design and council fees are listed separately.
Typical rates in Kilwinning: £1,720 to £3,330 per m² including VAT, depending on specification.
| Size | Essential | Standard | Premium |
|---|---|---|---|
| 3 m × 4 m 12 m² | £20,500 – £25,000 | £24,000 – £31,500 | £30,500 – £40,000 |
| 4 m × 5 m 20 m² | £34,000 – £41,500 | £40,000 – £52,000 | £50,500 – £67,000 |
| 5 m × 6 m 30 m² | £51,000 – £62,000 | £60,000 – £78,000 | £76,000 – £100,000 |
Want a range for your exact size? The guide-price tool takes about a minute.
Will the council need to approve it?
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. Separately, almost every extension needs a building warrant from the council before work starts.
The planning position for a specific Kilwinning address depends on its history and any designations, which is why we check it at the first visit.
Building close to a public sewer needs the agreement of Scottish Water, which we check during design.
Applications are decided by your council as planning authority.
Who a timber frame extension suits
- Contemporary designs with timber or board cladding
- Sites where weight or speed matters
- Homeowners who want strong energy performance
What happens next
Site visits are free and there is no obligation. Where drawings are needed, the design stage is priced in writing before it starts.
Free site visit
A designer visits, takes measurements and photos, and discusses layouts, budget and timing with you.
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
The price is fixed in writing once the design is settled, with a clear programme and payment stages.
Build and sign-off
We build it with one project manager, book the building control inspections and hand over the completion certificate.
Questions people ask about timber frame extensions
Can I see a price before committing to anything?
Yes. The guide prices on this page are adjusted for Kilwinning, and the guide-price tool gives a range for your own size. After the survey you get a written price before anything is agreed.
Do you cover all of Kilwinning?
Yes. We cover Kilwinning and the surrounding parts of Ayrshire. Site visits are free and there is no obligation.
Will my neighbours in Kilwinning be involved?
If a planning application is needed, the council notifies neighbours. Where work is close to a shared boundary, we agree access and protection with them in writing.
Does a timber frame extension need planning permission?
The same planning rules apply as for any extension. If the cladding looks different from the house, permitted development’s matching-materials condition may mean an application is needed.
Is timber frame cheaper than brick?
It is similar overall. The frame can save time on site, but the cladding choice has a big effect on cost. Our guide range is about £1,720 to £3,330 per m² including VAT.
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.