Extensions in Perth and Kinross: design, planning and build
From a small utility to a two-storey addition, we take on house extensions throughout Perth and Kinross, starting with a free visit and a planning check.
- Towns listed3
- Price regionScotland (×0.98)
- Planning rulesScotland
- Postcode districts19
Towns we cover in Perth and Kinross
Towns we cover here include Perth, Blairgowrie, Crieff.
Which extension suits a Perth and Kinross home?
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.
Start by comparing single-storey rear extensions, orangery extensions and double-storey extensions: between them they cover most of the layouts we see requested for houses like these.
Approvals for an extension in Perth and Kinross
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.
Perth and Kinross extension prices at a glance
Every figure below is a guide for Perth and Kinross, 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) |
|---|---|---|
| Wraparound extensions | 25 m² | £56,000 – £71,500 |
| Single-storey rear extensions | 20 m² | £40,000 – £51,000 |
| Orangery extensions | 16 m² | £43,500 – £55,000 |
| Extensions over a garage | 12 m² | £24,500 – £32,000 |
| Side return extensions | 11 m² | £25,500 – £32,500 |
| Kitchen extensions | 20 m² | £41,000 – £52,000 |
Every extension type in Perth and Kinross
- Pitched roof extensions · from £21,500
- Bedroom extensions · from £25,000
- Bungalow extensions · from £25,500
- Porch extensions · from £3,900
- Timber frame extensions · from £20,500
- Wraparound extensions · from £35,000
- Side return extensions · from £17,500
- Kitchen extensions · from £26,000
- Single-storey rear extensions · from £20,500
- Planning permission for extensions · from £300
- Extensions over a garage · from £23,500
- Orangery extensions · from £29,000
- Flat roof extensions · from £20,500
- Annexe extensions · from £53,500
- Conservatory replacement extensions · from £19,500
- Glass box extensions · from £29,000
- Extension plans and drawings · from £1,150
- Side extensions · from £21,500
- Double-storey extensions · from £37,000
- Building regulations for extensions · from £850
- Home office extensions · from £15,500
- Utility and boot room extensions · from £13,500
Neighbouring areas
Questions about extensions in Perth and Kinross
How much does an extension cost in Perth and Kinross?
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.
How long does an extension take in Perth and Kinross?
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.
Can I get a price before anyone visits?
Yes. This page shows guide prices adjusted for Perth and Kinross, and the guide-price tool gives a range for your own size and finish in about a minute.
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.
Book a free site visit in Perth and Kinross
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.