Barrhead wraparound extensions, designed and built
From the first sketch to final sign-off, we plan and build wraparound extensions in Barrhead and the surrounding Renfrewshire and Inverclyde area.
- Guide price in BarrheadFrom £35,000 inc VAT
- PlanningScottish householder rules; building warrant needed
- Build time14–20 weeks on site
- Postcode districtsG78

Extensions in and around Barrhead
Our survey diary covers Barrhead, including G78. The same team covers Paisley (3 miles), Newton Mearns (3 miles), Renfrew (5 miles), Johnstone (5 miles), all within easy reach.
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.
Planning and approvals in Barrhead
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.
Homes in conservation areas, national scenic areas and listed buildings have tighter rules, so we always check the property's status and planning history before design starts.
Building close to a public sewer needs the agreement of Scottish Water, which we check during design.
Applications are decided by your council as planning authority.
Who a wraparound extension suits
- Families who want kitchen, dining and living in one space
- Terraced houses that want the largest ground floor possible
- Semi-detached houses with a side passage
Wraparound extension prices in Barrhead
Labour and material costs vary across the UK, so for Barrhead we use our Scotland factor (×0.98). The ranges include VAT and exclude design, structural and council fees.
Typical rates in Barrhead: £1,960 to £3,630 per m² including VAT, depending on specification.
| Size | Essential | Standard | Premium |
|---|---|---|---|
| Compact L-shape 18 m² | £35,000 – £42,500 | £40,500 – £51,500 | £51,000 – £65,500 |
| Medium L-shape 25 m² | £49,000 – £59,000 | £56,000 – £71,500 | £71,000 – £91,000 |
| Large L-shape 32 m² | £62,500 – £75,500 | £72,000 – £91,000 | £90,500 – £116,500 |
Try the guide-price tool to see a range for your own size and finish.
What happens next
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
First, a site visit: we look at the house, garden, access and drains and listen to what you need.
Design and approvals
We produce the drawings and structural design, and manage the approvals so they are in place before work starts.
Fixed written price
With the design and specification agreed, you get a fixed written price and a start date.
Build and sign-off
Work is carried out to the agreed programme, inspected by building control and signed off at the end.
Wraparound extension questions answered
How long does a wraparound extension take to build in Barrhead?
On site, typically 14 to 20 weeks once approvals are in place. Before that, allow 8–16 weeks design and approvals.
Will my neighbours in Barrhead 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.
Do you cover all of Barrhead?
Yes. We cover Barrhead and the surrounding parts of Renfrewshire and Inverclyde. Site visits are free and there is no obligation.
Is a wraparound better than a side return alone?
It adds far more space, but costs more and needs planning permission more often. Our comparison guide sets the two side by side.
How much does a wraparound extension cost?
Our guide range is about £1,960 to £3,630 per m² including VAT. A 25 m² standard-spec wraparound typically lands around £56,000 to £71,500 in Barrhead before design and council fees.
Book a free site visit in Barrhead
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.