Home extensions in Cumbernauld
Every type of house extension in Cumbernauld, from single-storey kitchen extensions to two-storey additions, side returns and orangeries. We design, handle the approvals and build.
- Postcode districtsG65, G67, G68
- Price regionScotland (×0.98)
- Planning rulesScotland
- Site visitFree, no obligation
Cumbernauld and surrounding towns
Across G65, G67, G68, we can visit, measure and advise. Neighbouring towns we cover include Airdrie (6 miles), Coatbridge (6 miles), Bellshill (9 miles), Motherwell (11 miles), Blantyre (11 miles). For homes towards Dunbartonshire, Kirkintilloch is around 6 miles away.
Approvals for an extension in Cumbernauld
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.
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.
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 works best for Cumbernauld houses?
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.
The types we would usually look at first for a home in Cumbernauld are double-storey extensions, bungalow extensions and single-storey rear extensions, depending on the garden and how the house is laid out.
Guide prices for Cumbernauld
Every figure below is a guide for Cumbernauld, adjusted for Scotland build costs (×0.98) and including VAT. Design and council fees are shown separately on each page.
| Extension type | Example size | Standard spec (inc VAT) |
|---|---|---|
| Kitchen extensions | 20 m² | £41,000 – £52,000 |
| Side return extensions | 11 m² | £25,500 – £32,500 |
| Extensions over a garage | 12 m² | £24,500 – £32,000 |
| Single-storey rear extensions | 20 m² | £40,000 – £51,000 |
| Orangery extensions | 16 m² | £43,500 – £55,000 |
| Double-storey extensions | 32 m² | £56,000 – £74,000 |
| Wraparound extensions | 25 m² | £56,000 – £71,500 |
Every extension type in Cumbernauld
- Extensions over a garage · from £23,500
- Annexe extensions · from £53,500
- Side return extensions · from £17,500
- Bungalow extensions · from £25,500
- Extension plans and drawings · from £1,150
- Planning permission for extensions · from £300
- Double-storey extensions · from £37,000
- Glass box extensions · from £29,000
- Kitchen extensions · from £26,000
- Home office extensions · from £15,500
- Flat roof extensions · from £20,500
- Utility and boot room extensions · from £13,500
- Side extensions · from £21,500
- Pitched roof extensions · from £21,500
- Building regulations for extensions · from £850
- Bedroom extensions · from £25,000
- Conservatory replacement extensions · from £19,500
- Wraparound extensions · from £35,000
- Timber frame extensions · from £20,500
- Porch extensions · from £3,900
- Single-storey rear extensions · from £20,500
- Orangery extensions · from £29,000
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
We confirm the build price in writing, based on the approved drawings and the finishes you have chosen.
Build and sign-off
Work is carried out to the agreed programme, inspected by building control and signed off at the end.
Questions about extensions in Cumbernauld
How much does an extension cost in Cumbernauld?
Using our Scotland factor (×0.98), a standard-spec single-storey extension of 20 m² is a guide £40,000 to £51,000 including VAT, and a 32 m² two-storey extension £56,000 to £74,000. Your written price follows the survey.
Can I get a price before anyone visits?
Yes. This page shows guide prices adjusted for Cumbernauld, and the guide-price tool gives a range for your own size and finish in about a minute.
Do I need planning permission for an extension in Cumbernauld?
Not always. It depends on the size, position and your property's history. Scottish householder rules allow some smaller extensions without an application, but a building warrant is still needed.
How long does an extension take in Cumbernauld?
Usually 2 to 4 months of design and approvals, then 10 to 16 weeks on site for a single-storey extension or 16 to 24 weeks for two storeys.
Will my neighbours need to be told?
If you apply for planning permission the council notifies neighbours, and we agree access with them in writing for work near a shared boundary.
Book a free site visit in Cumbernauld
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.