Extensions in Glasgow: design, planning and build
More space without moving: we plan and build extensions across Glasgow, with one team for the drawings, the council and the build.
- Towns listedWhole area
- Price regionScotland (×0.98)
- Planning rulesScotland
- Postcode districts28
Towns we cover in Glasgow
We cover the whole of Glasgow, including the city itself.
What extensions cost in Glasgow
Every figure below is a guide for Glasgow, 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) |
|---|---|---|
| Orangery extensions | 16 m² | £43,500 – £55,000 |
| Side return extensions | 11 m² | £25,500 – £32,500 |
| Single-storey rear extensions | 20 m² | £40,000 – £51,000 |
| Double-storey extensions | 32 m² | £56,000 – £74,000 |
| Wraparound extensions | 25 m² | £56,000 – £71,500 |
Approvals for an extension in Glasgow
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.
What works best for Glasgow 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.
Depending on the plot, double-storey extensions and orangery extensions are often the strongest options, with bungalow extensions worth considering where there is room.
Every extension type in Glasgow
- Timber frame extensions · from £20,500
- Conservatory replacement extensions · from £19,500
- Pitched roof extensions · from £21,500
- Side return extensions · from £17,500
- Bedroom extensions · from £25,000
- Kitchen extensions · from £26,000
- Orangery extensions · from £29,000
- Glass box extensions · from £29,000
- Single-storey rear extensions · from £20,500
- Utility and boot room extensions · from £13,500
- Home office extensions · from £15,500
- Flat roof extensions · from £20,500
- Double-storey extensions · from £37,000
- Building regulations for extensions · from £850
- Bungalow extensions · from £25,500
- Extensions over a garage · from £23,500
- Annexe extensions · from £53,500
- Extension plans and drawings · from £1,150
- Side extensions · from £21,500
- Wraparound extensions · from £35,000
- Porch extensions · from £3,900
- Planning permission for extensions · from £300
Neighbouring areas
Questions about extensions in Glasgow
How much does an extension cost in Glasgow?
With our Scotland factor (×0.98), a standard-spec 20 m² single-storey extension is a guide £40,000 to £51,000 including VAT. Prices for every type are linked on this page.
Do you handle building regulations?
Yes. We prepare the drawings and calculations, submit them and book inspections, and in Scotland we apply for the building warrant before work starts.
Can I get a price before anyone visits?
Yes. This page shows guide prices adjusted for Glasgow, and the guide-price tool gives a range for your own size and finish in about a minute.
How long does an extension take in Glasgow?
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.
Book a free site visit in Glasgow
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.