Johnstone, Glasgow and the Clyde
Wraparound extension in Johnstone
An L-shaped extension that fills the side return and runs across the back. We design, get the approvals for and build wraparound extensions in Johnstone and the surrounding area, with one contract from the first survey to building control sign-off.
Johnstone and its postcode districts PA5 are part of our Glasgow and the Clyde coverage. In Johnstone we usually draw the wraparound and a simpler rear-only option side by side, so the planning risk and cost difference are clear.
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 wraparound extension cost in Johnstone?
Guide prices for a wraparound extension in Johnstone start from our Scotland rate of £2,090–£3,420 per square metre, including VAT. Prices in Scotland sit a little below our West Midlands baseline; building warrant fees and drawings are budgeted separately.
| Size | Guide price inc VAT |
|---|---|
| L-shaped, about 22 m² of new floor | £46,000–£75,000 |
| L-shaped, about 30 m² of new floor | £62,500–£102,500 |
These are guide ranges; the written quote after the survey is the figure that counts.
Do you need planning permission for a wraparound extension in Johnstone?
Here is how the rules in Scotland apply to a wraparound extension in Johnstone.
Scottish householder rights treat the side part of a wraparound or side infill more strictly than a plain rear extension, so most need planning permission, and all need a building warrant.
There is no Party Wall Act in Scotland; neighbour matters are handled through the title deeds, common law and written agreement before work starts.
Classes 1A and 1B do not apply in conservation areas, and listed buildings need listed building consent. We check your house's planning history and any conservation area before drawing, so the route is clear before you spend on plans.
What are homes in Johnstone like to extend?
Post-war semis and terraces are common around Johnstone, and many have room for a single-storey rear extension within Class 1A limits.
How a wraparound extension in Johnstone 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.
Drawings and budget
Floor plans and elevations for the options, each with a guide price.
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.
Wraparound extensions near Johnstone
From Johnstone, the nearest places we also cover are Paisley (3.2 miles) and Barrhead (5.2 miles).
- Wraparound extension in Paisley
- Wraparound extension in Barrhead
- Wraparound extension in Erskine
- Wraparound extension in Renfrew
- Wraparound extension in Clydebank
Other work in Johnstone:
FAQ
Wraparound extension questions in Johnstone
What postcode areas do you cover around Johnstone?
Including PA5, and the surrounding Glasgow and the Clyde 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.
Is it worth it over a side return alone?
If you want a dining table and a sofa as well as the kitchen, usually yes.
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 Johnstone?
Yes. We apply for the building warrant before work starts and submit the completion certificate at the end.
How much does a wraparound extension cost in Johnstone?
As a guide, £2,090–£3,420 per square metre including VAT for a standard specification. For example, L-shaped, about 22 m² of new floor: about £46,000–£75,000 at that rate. Your written price follows the survey.