Johnstone pitched roof extensions, designed and built
Our design and build teams take on pitched roof extensions in Johnstone, from the first measured survey through planning and building control to the finished room.
- Guide price in JohnstoneFrom £21,500 inc VAT
- PlanningScottish householder rules; building warrant needed
- Build time10–16 weeks on site
- Postcode districtsPA5, PA10
Planning rules that apply 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.
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.
In Scotland a building warrant from the council is needed before work starts on almost any extension, and a completion certificate is issued when the work is accepted. Building standards are set in the Scottish technical handbooks.
Applications are decided by your council as planning authority.
Is a pitched roof extension right for your house?
- Traditional, period and rural houses
- Homeowners who prefer a vaulted ceiling
- Conservation-sensitive streets
What should I budget for a pitched roof extension in Johnstone?
For Johnstone we adjust our national guide rates by ×0.98, the factor we use for Scotland. Figures include VAT; your written quote after the survey replaces them.
Typical rates in Johnstone: £1,810 to £3,430 per m² including VAT, depending on specification.
| Size | Essential | Standard | Premium |
|---|---|---|---|
| 3 m × 4 m 12 m² | £21,500 – £25,500 | £25,000 – £32,500 | £32,000 – £41,500 |
| 4 m × 5 m 20 m² | £36,000 – £42,500 | £42,000 – £54,000 | £53,500 – £69,000 |
| 5 m × 6 m 30 m² | £54,000 – £63,500 | £63,000 – £81,000 | £80,500 – £103,000 |
For a figure based on your own dimensions, use our guide-price tool.
Covering Johnstone
Postcode districts we cover around Johnstone include PA5, PA10. We also work in nearby Paisley (3 miles), Barrhead (5 miles), Erskine (6 miles), Renfrew (6 miles).
For homes towards Dunbartonshire, Clydebank is around 7 miles away. Across Scotland, extensions follow Scottish planning and building standards, including the building warrant process, which we build into the programme from the start.
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
It starts with a visit to your house to measure, check access and talk through ideas and budget.
Design and approvals
We draw the design, agree it with you and handle planning or permitted development checks and building regulations.
Fixed written price
We confirm the build price in writing, based on the approved drawings and the finishes you have chosen.
Build and sign-off
Our team builds the extension, keeps you updated weekly and finishes with building control sign-off.
Common questions in Johnstone
Who do I contract with for a pitched roof extension in Johnstone?
Your contract is with S&K Property Investments and Improvement Ltd, which designs and manages the project and the build teams who carry it out.
Do I need building regulations approval in Johnstone?
Yes. Almost every extension needs it, whatever the planning route. In Scotland that means a building warrant before work starts.
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.
Can I have a vaulted ceiling?
Yes. A vaulted ceiling with roof windows is one of the main reasons to choose a pitched roof. It needs insulation between and under the rafters to meet the building regulations.
How much does a pitched roof extension cost?
Our guide range is about £1,810 to £3,430 per m² including VAT, a little more than a flat roof because of the roof structure and tiles.
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.