Johnstone, Glasgow and the Clyde
Terraced house rear extension in Johnstone
Rear and side return extensions for terraces, with access through the house and two neighbours. If you live in Johnstone and want to know what a terraced house rear extension would cost and whether it needs planning, start with the online guide price or a free site visit.
Johnstone is covered from our Glasgow and the Clyde round, including PA5. Terraced streets make up much of the housing in parts of Glasgow and the Clyde, and most rear extensions here go in without side access.
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 terraced house rear extension cost in Johnstone?
For Johnstone we work from the Scotland rate: £1,950–£3,140 per square metre of new floor, including VAT, standard specification. 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 wide × 4.5 m deep (13.5 m²) | £26,500–£42,500 |
| 3 m wide × 6 m deep (18 m²) | £35,000–£56,500 |
Your written price follows a measured survey and an agreed design, so it reflects your house, not an average.
Do you need planning permission for a terraced house rear extension in Johnstone?
Planning for a terraced house rear extension in Johnstone follows the Scottish householder rules.
In Scotland a single-storey rear extension can be permitted development under Class 1A: eaves no higher than 3 metres and an overall height of 4 metres, and where any part is within 1 metre of a boundary it can project no more than 3 metres on a terraced house or 4 metres on other houses. The rights do not apply in conservation areas, and a building warrant is still needed before work starts.
Scotland has no Party Wall Act. Work to shared walls is governed by property law and the title deeds, so we agree access and protection with neighbours in writing before work begins.
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 Johnstone like to extend?
Johnstone 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 terraced house rear extension in Johnstone comes together
Survey visit
We visit free of charge, measure up, check access, drainage and neighbours' extensions, and note what you want the room to do.
Drawings and budget
Floor plans and elevations for the options, each with a guide price.
Approvals
Permitted development check or planning application, then building warrant drawings and structural calculations, plus a written agreement with neighbours for any shared-wall work.
Build and sign-off
We build to the approved drawings with regular updates, then hand over the accepted completion certificate and any guarantees from suppliers.
Terraced house rear extensions near Johnstone
From Johnstone, the nearest places we also cover are Paisley (3.2 miles) and Barrhead (5.2 miles).
- Terraced house rear extension in Paisley
- Terraced house rear extension in Barrhead
- Terraced house rear extension in Erskine
- Terraced house rear extension in Renfrew
- Terraced house rear extension in Clydebank
Other work in Johnstone:
FAQ
Terraced house rear extension questions in Johnstone
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.
Who will build my extension?
Vetted building teams working under contract to us. Your contract is with S&K Property Investments and Improvement Ltd for the design and the build.
Can you build without side access?
Yes. Materials come through the house in protected runs or over the roof by crane on tight sites.
What postcode areas do you cover around Johnstone?
Including PA5, and the surrounding Glasgow and the Clyde area.
Will I need a structural engineer?
Yes for the beam over the new opening and usually the foundations; we arrange them and their calculations go to building control.
Can you match the brick or stone on my Johnstone house?
We source the closest match and show you samples before ordering; reclaimed materials are often the best match on older houses.