Pitched roof extensions in Grangemouth: design, approvals and build
From the first sketch to final sign-off, we plan and build pitched roof extensions in Grangemouth and the surrounding Forth Valley area.
- Guide price in GrangemouthFrom £21,500 inc VAT
- PlanningScottish householder rules; building warrant needed
- Build time10–16 weeks on site
- Postcode districtsFK2, FK3
What is included
- Vaulted ceilings or flat ceilings with storage above
- Insulation to current building regulations
- Lead or proprietary flashings to the main wall
- Roof windows positioned for light and ventilation
- Roof design matched to the existing pitch and tiles
Matching tiles is harder than it sounds. We source reclaimed or closest-match tiles where the originals are no longer made and agree samples with you before ordering.
What should I budget for a pitched roof extension in Grangemouth?
These guide figures apply our Scotland adjustment (×0.98) to national rates. They include VAT at 20% and cover the build itself; design and council fees are listed separately.
Typical rates in Grangemouth: £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.
Do I need planning permission in Grangemouth?
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.
Working in Grangemouth
Across FK2, FK3, we can visit, measure and advise. Neighbouring towns we cover include Falkirk (3 miles), Alloa (8 miles), Stirling (11 miles).
For homes towards Edinburgh and the Lothians, Bathgate is around 8 miles away. 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.
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
First, a site visit: we look at the house, garden, access and drains and listen to what you need.
Design and approvals
Once the layout is agreed, we deal with the council: planning permission or written confirmation that none is needed, plus building control.
Fixed written price
With the design and specification agreed, you get a fixed written price and a start date.
Build and sign-off
The build is managed from start to finish, inspected at each stage and signed off on completion.
Pitched roof extension questions answered
Can I see a price before committing to anything?
Yes. The guide prices on this page are adjusted for Grangemouth, and the guide-price tool gives a range for your own size. After the survey you get a written price before anything is agreed.
Do you cover all of Grangemouth?
Yes. We cover Grangemouth and the surrounding parts of Forth Valley. Site visits are free and there is no obligation.
How long does a pitched roof extension take to build in Grangemouth?
On site, typically 10 to 16 weeks once approvals are in place. Before that, allow 6–12 weeks design and approvals.
Is a pitched roof better than a flat roof?
Neither is better in all cases. Pitched roofs blend with traditional houses and shed water quickly; flat roofs give more headroom and suit modern designs and lanterns.
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 Grangemouth
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.