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Scotland

Ayrshire house extensions

Looking to extend your home in Ayrshire? Start here: extension types, guide prices for Ayrshire, the planning rules that apply and how a project runs.

  • Towns listed7
  • Price regionScotland (×0.98)
  • Planning rulesScotland
  • Postcode districts31
Two-storey rear extension on a brick semi-detached house with a hipped roof

Towns we cover in Ayrshire

Towns we cover here include Kilmarnock, Ayr, Irvine, Kilwinning.

Approvals for an extension in Ayrshire

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.

Guide prices for Ayrshire

We publish guide prices so you can budget before anyone visits. For Ayrshire they are adjusted by ×0.98, the factor we use across Scotland.

Extension typeExample sizeStandard spec (inc VAT)
Side return extensions11 m²£25,500 – £32,500
Extensions over a garage12 m²£24,500 – £32,000
Orangery extensions16 m²£43,500 – £55,000
Wraparound extensions25 m²£56,000 – £71,500
Double-storey extensions32 m²£56,000 – £74,000
Conservatory replacement extensions14 m²£29,000 – £38,000

Choosing the right extension in Ayrshire

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, single-storey rear extensions, orangery extensions or bungalow extensions gives the most useful space for the budget.

Questions about extensions in Ayrshire

How much does an extension cost in Ayrshire?

With our Scotland factor (×0.98), a standard-spec 20 m² single-storey extension is a guide £40,000 to £51,000 including VAT. Prices for every type are linked on this page.

Who do I contract with?

Your contract is with S&K Property Investments and Improvement Ltd, which designs and manages the project and the build teams who carry it out.

Do you cover all of Ayrshire?

Yes, across the whole of Ayrshire. Site visits are free and there is no obligation.

Will my neighbours need to be told?

If you apply for planning permission the council notifies neighbours, and we agree access with them in writing for work near a shared boundary.

Book a free site visit in Ayrshire

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

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