Perth and Kinross
Rear extensions for detached houses in Perth and Kinross
Wider, deeper rear extensions with room for vaulted roofs and big glazing. Rear extensions in Perth and Kinross: we cover 5 towns including Perth, Blairgowrie and Rattray and Crieff, with design, approvals and the build under one contract.
Perth and Kinross 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.
How much does a detached house rear extension cost in Perth and Kinross?
A detached house rear extension in Perth and Kinross is priced at £1,850–£3,040 per square metre including VAT as a guide, before kitchen fit-out and fees. Prices in Scotland sit a little below our West Midlands baseline; building warrant fees and drawings are budgeted separately.
| Size | Guide price inc VAT |
|---|---|
| 4 m wide × 6 m deep (24 m²) | £44,500–£73,000 |
| 5 m wide × 8 m deep (40 m²) | £74,000–£121,500 |
These are guide ranges; the written quote after the survey is the figure that counts.
Do you need planning permission in Perth and Kinross?
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 Class 1B rights for extensions of more than one storey need a 10 metre gap to every boundary, which few gardens have. Expect a planning application as well as a building warrant for a double-storey rear extension.
Classes 1A and 1B do not apply in conservation areas, and listed buildings need listed building consent.
Where in Perth and Kinross do we work?
FAQ
Questions people ask
Can I have a vaulted ceiling?
Yes, with a pitched roof and exposed or boxed rafters, subject to the height limits.
Is an oak frame worth it?
It is a premium finish with a long life; it costs more than blockwork with a plain roof.
Does a big extension need more heating?
Usually yes. We size underfloor heating or new radiators to the room.
Do you cover all of Perth and Kinross?
We cover 5 towns and districts in Perth and Kinross, including Perth, Blairgowrie and Rattray and Crieff.
Who builds the extension?
Vetted building teams working under contract to us; your contract is with S&K Property Investments and Improvement Ltd.