Utility and boot room extensions in Johnstone
We design and build utility room extensions for houses in Johnstone, with a written price once the survey and design are done and one point of contact throughout.
- Guide price in JohnstoneFrom £13,500 inc VAT
- PlanningScottish householder rules; building warrant needed
- Build time6–10 weeks on site
- Postcode districtsPA5, PA10

Who a utility room extension suits
- Kitchens that have run out of space for appliances
- Houses with a side passage or small rear corner
- Busy family homes
How much does a utility room extension cost in Johnstone?
These guide figures apply our Scotland adjustment (×0.98) to national rates. They include VAT at 20% and cover the build itself; design and council fees are listed separately.
Typical rates in Johnstone: £1,860 to £3,430 per m² including VAT, depending on specification.
| Size | Essential | Standard | Premium |
|---|---|---|---|
| 2 m × 2.5 m 5 m² | £13,500 – £16,500 | £13,500 – £17,500 | £13,500 – £17,500 |
| 2.5 m × 3.2 m 8 m² | £14,500 – £18,000 | £17,500 – £22,000 | £21,500 – £27,500 |
| 3 m × 3.6 m 11 m² | £20,000 – £24,500 | £24,000 – £30,500 | £30,000 – £38,000 |
Want a range for your exact size? The guide-price tool takes about a minute.
Do I need planning permission in Johnstone?
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. Separately, almost every extension needs a building warrant from the council before work starts.
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.
Scotland has no Party Wall Act. Where work affects a shared wall or a neighbour's land, we agree access, protection and making good with your neighbour in writing before work starts.
Applications are decided by your council as planning authority.
Extensions in and around Johnstone
Site visits are available across Johnstone (PA5, PA10). The same team covers Paisley (3 miles), Barrhead (5 miles), Erskine (6 miles), Renfrew (6 miles), all within easy reach.
Clydebank, in Dunbartonshire, is roughly 7 miles from Johnstone and also on our list. 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.
How the project works
Site visits are free and there is no obligation. Where drawings are needed, the design stage is priced in writing before it starts.
Free site visit
A designer visits, takes measurements and photos, and discusses layouts, budget and timing with you.
Design and approvals
Once the layout is agreed, we deal with the council: planning permission or written confirmation that none is needed, plus building control.
Fixed written price
With the design and specification agreed, you get a fixed written price and a start date.
Build and sign-off
Our team builds the extension, keeps you updated weekly and finishes with building control sign-off.
Questions people ask about utility room extensions
Can I see a price before committing to anything?
Yes. The guide prices on this page are adjusted for Johnstone, and the guide-price tool gives a range for your own size. After the survey you get a written price before anything is agreed.
Will my neighbours in Johnstone be involved?
If a planning application is needed, the council notifies neighbours. Where work is close to a shared boundary, we agree access and protection with them in writing.
How long does a utility room extension take to build in Johnstone?
On site, typically 6 to 10 weeks once approvals are in place. Before that, allow 4–10 weeks design and approvals.
How much does a utility room extension cost?
Our guide range is about £1,860 to £3,430 per m² including VAT, with a minimum of around £14,000. An 8 m² standard-spec utility is typically £17,500 to £22,000 in Johnstone.
Can a utility have a toilet?
Yes, space permitting. A WC needs drainage and extraction, which we plan into the design.
Book a free site visit in Johnstone
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.