Kitchen extensions with bedrooms above in Dumbarton
We plan and build kitchen extensions with bedrooms above for homeowners in Dumbarton and nearby. Every project starts with a free visit and a design stage priced in writing before any work begins.
What we'd confirm first for a project in Dumbarton.
- Postcode districts
- G82
- County / area
- Glasgow and Dunbartonshire, Scotland
- Price region
- Scotland
- Guide price
- £52,500–£71,000 (£1,880–£2,540 per m²), kitchen units and worktops priced separately
- Approval route
- Planning permission is usually needed: Class 1B permitted development only applies if every part of the extension is at least 10 m from all boundaries. A building warrant is needed before work starts.
- Nearest towns
- Vale of Leven (1.9 miles), Bonhill (2.4 miles), Alexandria (3.5 miles)
- Distance to Glasgow
- about 13.3 miles
- First visit
- Free, no obligation
About a kitchen extension with bedrooms above
A kitchen extension with bedrooms above is a two-storey extension designed so the ground floor becomes a larger, usually open-plan kitchen and dining space, with one or two bedrooms or a bathroom on the first floor. It is a natural fit for a two-storey rear extension. The key design issues are the steel beams that open up the house, glazing and ventilation.
Around Dumbarton we also work in Vale of Leven, Bonhill and Alexandria, and across the rest of Glasgow and Dunbartonshire. Postcode district in and near Dumbarton: G82.
What it costs in Dumbarton
Most of the cost of a kitchen extension with bedrooms above is set by its size and specification. For Dumbarton and the rest of Scotland, our guide is £1,880–£2,540 per m² including VAT, so about £52,500–£71,000 (kitchen units and worktops priced separately) for a 4 m × 3.5 m footprint on two floors (28 m² of new floor space). These are guides, not quotes. Ground conditions, steelwork and access can move the figure either way.
| Spec | Per m² | A 4 m × 3.5 m footprint on two floors (28 m² of new floor space) |
|---|---|---|
| Essential | £1,730–£2,330 per m² | £48,500–£65,500 |
| Standard | £1,880–£2,540 per m² | £52,500–£71,000 |
| Premium | £2,260–£3,050 per m² | £63,000–£85,500 |
Planning and building standards in Dumbarton
In Scotland, a two-storey kitchen extension falls under Class 1B, which needs at least 10 m to every boundary for permitted development. Most gardens are too narrow, so expect a householder application, which costs £371 and is decided within two months. A building warrant covers the structure, ventilation and energy standards.
Approval in Scotland: Householder planning application: £371. Councils have two months to decide a local planning application.
Building standards: A building warrant from the council's building standards service before work starts, and a completion certificate at the end. Scotland uses its own Technical Handbooks.
Design points for Dumbarton homes
Steel beams and the open-plan opening
Removing the old rear wall to make one large room means a steel beam, sometimes several, to carry the first floor and roof. The engineer sizes the steel and its supports, and we decide early whether you want a flush ceiling with the beam hidden or a downstand, as this affects ceiling heights.
Services and drainage
Sinks, dishwashers and an upstairs bathroom all need waste routes to the drains, often near where the extension goes. We check the drains early and plan soil stacks, gas and electrical supplies so the kitchen layout is not limited later.
How we'd run your project
Free site visit
We visit your home in Dumbarton, look at the structure, access and boundaries, and talk through what you want the new rooms to do.
Drawings and permission
Our designers produce plans and elevations, then we take care of planning or permitted development checks with the council covering Dumbarton.
Structure and building standards
A structural engineer sizes the foundations and steels, and we get a building warrant before work starts.
On site
One project lead runs the job, keeps you updated and arranges inspections at each stage until completion.
Questions about kitchen extensions with bedrooms above in Dumbarton
Do I need planning permission for a kitchen extension with bedrooms above in Dumbarton?
Dumbarton is in Scotland. Planning permission is usually needed: Class 1B permitted development only applies if every part of the extension is at least 10 m from all boundaries. A building warrant is needed before work starts.
How long does a kitchen extension with bedrooms above take?
Allow 4 to 8 weeks for survey and design, then the approval period (councils have two months to decide a local planning application), then 4 to 8 weeks of technical design, which can overlap. The build itself usually takes 14 to 20 weeks, longer for large or complex designs.
Which postcodes do you cover around Dumbarton?
We cover Dumbarton (G82) and nearby places including Vale of Leven, Bonhill and Alexandria, plus the rest of Glasgow and Dunbartonshire. The first site visit is free.
Can I keep using my kitchen during the build?
For part of it. The new structure can be built while your existing kitchen stays in use, but when the rear wall is opened and the new kitchen is fitted there will be several weeks without one. We plan when this happens and help you set up a temporary kitchen elsewhere in the house.
Is it cheaper to build a kitchen extension and bedrooms at the same time?
Yes, in most cases. Building both floors at once means one set of foundations, one roof, one scaffold and one set of approvals. Adding a first floor later means removing the original roof, possibly strengthening the foundations and disrupting the kitchen again. If you think you will need the bedroom, build it now.
Nearby
Other towns near Dumbarton:
Other extensions in Dumbarton
All two-storey extension services in Dumbarton · Kitchen extensions with bedrooms above across Glasgow and Dunbartonshire
Want a figure first? Try our guide price tool, then book a free visit to firm it up.