Alloa, Forth Valley
Two-storey rear extension in Alloa
Two-storey rear extension in Alloa: a larger kitchen downstairs and an extra bedroom or bathroom upstairs, under one roof. We measure the house, show you what the rules allow, price it in writing and build it.
Alloa is covered from our Forth Valley round, including FK10. Two-storey rear extensions suit semi-detached houses in Alloa best, where the extra bedroom matters as much as the bigger kitchen.
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 Alloa?
A two-storey rear extension in Alloa 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 Alloa?
Here is how the rules in Scotland apply to a two-storey rear extension in Alloa.
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. At the first visit we measure what is there now and tell you which route fits: permitted development or a planning application, plus the building warrant.
What are homes in Alloa like to extend?
Alloa 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 a two-storey rear extension in Alloa 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.
Design and guide price
Two or three layout options with a guide price for each, so you choose the design knowing what it costs.
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 Alloa
Neighbouring places we cover include Stirling (5.7 miles) and Stenhousemuir (6.2 miles).
- Two-storey rear extension in Stirling
- Two-storey rear extension in Stenhousemuir
- Two-storey rear extension in Grangemouth
- Two-storey rear extension in Falkirk
- Two-storey rear extension in Bo'ness
Other work in Alloa:
FAQ
Two-storey rear extension questions in Alloa
How long does a rear extension take to build in Alloa?
Most single-storey rear extensions take 10 to 16 weeks on site and two-storey extensions 16 to 26 weeks, after design and approvals.
Do you handle building control in Alloa?
Yes. We apply for the building warrant before work starts and submit the completion certificate at the end.
Can I add an en-suite upstairs?
Yes. We plan the soil pipe route early so the bathroom sits where drainage works without boxing through the room below.
Can you match the brick or stone on my Alloa house?
We source the closest match and show you samples before ordering; reclaimed materials are often the best match on older houses.
What postcode areas do you cover around Alloa?
Including FK10, and the surrounding Forth Valley area.
Can I live at home while the extension is built?
Usually yes. Most of the work is outside until the back wall is opened near the end, and that stage is screened off.