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Bedroom extensions for homes in Renfrewshire and Inverclyde

Planning a bedroom extension in Renfrewshire and Inverclyde? 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 priceFrom £25,000 inc VAT
  • PlanningUsually planning permission; building warrant needed
  • Towns covered7
  • Site visitFree, no obligation
Bedroom in an extension with a roof window and an en-suite shower room

Working in Renfrewshire and Inverclyde

Towns we cover in Renfrewshire and Inverclyde include Paisley, Greenock, Newton Mearns, Renfrew, Barrhead, Johnstone, Erskine. 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.

Guide prices for Renfrewshire and Inverclyde

For Renfrewshire and Inverclyde 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 Renfrewshire and Inverclyde: £1,570 to £3,140 per m² including VAT, depending on specification.

SizeEssentialStandardPremium
One bedroom
12 m²
£25,000 – £31,500£25,000 – £33,000£28,000 – £38,000
Bedroom and en-suite
18 m²
£28,000 – £34,500£33,500 – £43,500£42,000 – £56,500
Two rooms
30 m²
£47,000 – £57,500£55,500 – £72,500£70,500 – £94,500

For a figure based on your own dimensions, use our guide-price tool.

When a bedroom extension makes sense

  • Growing families
  • Homeowners who want an en-suite master bedroom
  • Multi-generational households

Planning and approvals in Renfrewshire and Inverclyde

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.

Before any drawing is finalised we check whether the house is listed, in a conservation area or subject to an Article 4 direction.

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.

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.

  1. Free site visit

    We visit your Renfrewshire and Inverclyde home, measure up, talk through what you want and check the planning position.

  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

    The price is fixed in writing once the design is settled, with a clear programme and payment stages.

  4. Build and sign-off

    Work is carried out to the agreed programme, inspected by building control and signed off at the end.

Common questions in Renfrewshire and Inverclyde

Do you cover all of Renfrewshire and Inverclyde?

Yes, across the whole of Renfrewshire and Inverclyde. Site visits are free and there is no obligation.

How long does a bedroom extension take to build in Renfrewshire and Inverclyde?

On site, typically 14 to 22 weeks once approvals are in place. Before that, allow 8–14 weeks design and approvals.

Can I see a price before committing to anything?

Yes. The guide prices on this page are adjusted for Renfrewshire and Inverclyde, and the guide-price tool gives a range for your own size. After the survey you get a written price before anything is agreed.

Will a new bedroom need planning permission?

Upstairs additions usually do. Ground-floor rooms may fall within permitted development, depending on size and position.

Does an en-suite need a window?

No, but it needs mechanical extraction that meets the building regulations. We design the duct route at the drawing stage.

Book a free site visit in Renfrewshire and Inverclyde

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 .

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