Forth Valley
Rear extension plans and planning applications in Forth Valley
Measured survey, design options, planning drawings and the application, handled for you. Across Forth Valley we handle the whole rear extension: survey, drawings, the planning route, building control and the build. Towns we cover here include Stirling, Falkirk and Alloa.

For Stirling homes we start with a measured survey, then draw options before anything is submitted. Forth Valley 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.
What does it cost in Forth Valley?
As a guide, £1,000–£2,500 including VAT. Your written price follows a measured survey and an agreed design, so it reflects your house, not an average.
Do you need planning permission in Forth Valley?
In Scotland an extension of more than one storey is only permitted development (Class 1B) if no part is within 10 metres of any boundary and it is no higher than the existing house, so almost every two-storey rear extension needs planning permission and a building warrant.
Classes 1A and 1B do not apply in conservation areas, and listed buildings need listed building consent.
Planning and building warrant fees in Scotland are set nationally and by value of work; we confirm both before submitting.
Scottish councils aim to decide householder applications within two months; the building warrant runs alongside.
Where in Forth Valley do we work?
FAQ
Questions people ask
Do I need an architect?
You need accurate drawings by someone who knows householder planning; we provide them.
Can I see the design in 3D?
Yes; we produce simple 3D views so you can judge the size and light.
Do neighbours get consulted?
Yes for a full application: the council writes to them or puts up a site notice.
Do you cover all of Forth Valley?
We cover 6 towns and districts in Forth Valley, including Stirling, Falkirk and Alloa.
Who builds the extension?
Vetted building teams working under contract to us; your contract is with S&K Property Investments and Improvement Ltd.