Perth, Perth and Kinross
Two-storey rear extension in Perth
A larger kitchen downstairs and an extra bedroom or bathroom upstairs, under one roof. If you live in Perth and want to know what a two-storey rear extension would cost and whether it needs planning, start with the online guide price or a free site visit.
Perth sits in Perth and Kinross, with postcode districts including PH1 and PH2. In Perth and Kinross we check the neighbours' rear windows first, because the upper floor is where most two-storey schemes win or lose planning.
Book a free site visit
Tell us about the house and we'll call to arrange a free, no-obligation visit.
How much does a two-storey rear extension cost in Perth?
A two-storey rear extension in Perth is priced at £1,710–£2,560 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 |
|---|---|
| 3 m × 5 m footprint, two floors (30 m²) | £51,500–£77,000 |
| 4 m × 6 m footprint, two floors (48 m²) | £82,000–£123,000 |
We put a fixed price in writing once the design is agreed, and explain any provisional sums such as foundations.
Do you need planning permission for a two-storey rear extension in Perth?
Planning for a two-storey rear extension in Perth follows the Scottish householder rules.
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. Before any drawing we look up the property's history with the council, because earlier extensions and removed rights change the answer.
What are homes in Perth like to extend?
Perth has sandstone tenements, terraced houses and villas closer in, with post-war semis and newer estates further out. Tenement and other flats need planning permission for an extension, and every project needs a building warrant before work starts.
How a two-storey rear extension in Perth comes together
Look round and measure
A free visit to see the back of the house, measure it, check the drains and boundaries and hear what you need.
Options and costs
We draw layout options and price each one, so the budget shapes the design rather than surprising you later.
Paperwork handled
Planning or permitted development, the building warrant, structural design and neighbour agreements are all handled by us.
Fixed price and build
A written price for the agreed design, a start date and a named contact through the build, ending with the accepted completion certificate.
Two-storey rear extensions near Perth
Close by, we work in Scone, about 2.0 miles away, and Auchterarder, about 12.6 miles away.
- Two-storey rear extension in Scone
- Two-storey rear extension in Auchterarder
- Two-storey rear extension in Blairgowrie and Rattray
- Two-storey rear extension in Crieff
- Two-storey rear extension in Glenrothes
Other work in Perth:
FAQ
Two-storey rear extension questions in Perth
Can I get a price without a visit?
Our online guide-price tool gives a range in a couple of minutes. A written price needs a survey.
Do you handle building control in Perth?
Yes. We apply for the building warrant before work starts and submit the completion certificate at the end.
Can it be built on a terraced house?
Sometimes, but the upper floor is harder to get through planning on a terrace because of the effect on neighbours. A single-storey extension with a loft conversion is often an easier route.
Is the site visit in Perth free?
Yes. We visit, measure up and talk through the options with no cost and no obligation.
What postcode areas do you cover around Perth?
Including PH1 and PH2, and the surrounding Perth and Kinross area.
Do I need a party wall agreement?
Scotland has no Party Wall Act; we agree access and protection with your neighbour in writing instead.