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Timber frame extensions in Barrhead: design, approvals and build

Planning a timber frame extension in Barrhead? We survey the house, work out the planning route, draw the design and build it, so you deal with one team from the first visit to the completion certificate.

  • Guide price in BarrheadFrom £20,500 inc VAT
  • PlanningScottish householder rules; building warrant needed
  • Build time8–14 weeks on site
  • Postcode districtsG78
Timber frame extension under construction with OSB sheathing and roof joists

Will the council need to approve it?

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.

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.

Timber frame extension prices in Barrhead

For Barrhead 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 Barrhead: £1,720 to £3,330 per m² including VAT, depending on specification.

SizeEssentialStandardPremium
3 m × 4 m
12 m²
£20,500 – £25,000£24,000 – £31,500£30,500 – £40,000
4 m × 5 m
20 m²
£34,000 – £41,500£40,000 – £52,000£50,500 – £67,000
5 m × 6 m
30 m²
£51,000 – £62,000£60,000 – £78,000£76,000 – £100,000

Want a range for your exact size? The guide-price tool takes about a minute.

What is included

  • Fire and acoustic details where needed
  • Frame design and structural calculations
  • Breathable wall build-up with insulation
  • Foundations, often lighter than masonry
  • Cladding, render or brick slip finish

Local to Barrhead

Site visits are available across Barrhead (G78). We also work in nearby Paisley (3 miles), Newton Mearns (3 miles), Renfrew (5 miles), Johnstone (5 miles).

Just over the Dunbartonshire border, Clydebank is about 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.

  1. Free site visit

    It starts with a visit to your house to measure, check access and talk through ideas and budget.

  2. Design and approvals

    Drawings are prepared and agreed with you, then submitted for the right planning route and building regulations approval.

  3. Fixed written price

    We confirm the build price in writing, based on the approved drawings and the finishes you have chosen.

  4. Build and sign-off

    Our team builds the extension, keeps you updated weekly and finishes with building control sign-off.

Common questions in Barrhead

Do I need building regulations approval in Barrhead?

Yes. Almost every extension needs it, whatever the planning route. In Scotland that means a building warrant before work starts.

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.

How long does a timber frame extension take to build in Barrhead?

On site, typically 8 to 14 weeks once approvals are in place. Before that, allow 4–12 weeks design and approvals.

Does a timber frame extension need planning permission?

The same planning rules apply as for any extension. If the cladding looks different from the house, permitted development’s matching-materials condition may mean an application is needed.

Is timber frame cheaper than brick?

It is similar overall. The frame can save time on site, but the cladding choice has a big effect on cost. Our guide range is about £1,720 to £3,330 per m² including VAT.

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

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