House extensions in Lanarkshire
From a small utility to a two-storey addition, we take on house extensions throughout Lanarkshire, starting with a free visit and a planning check.
- Towns listed12
- Price regionScotland (×0.98)
- Planning rulesScotland
- Postcode districts19

Towns we cover in Lanarkshire
Towns we cover here include East Kilbride, Hamilton, Cumbernauld, Coatbridge.
Choosing the right extension in Lanarkshire
Across Scotland, extensions follow Scottish planning and building standards, including the building warrant process, which we build into the programme from the start.
Start by comparing orangery extensions, bungalow extensions and double-storey extensions: between them they cover most of the layouts we see requested for houses like these.
Guide prices for Lanarkshire
Use these Lanarkshire guide prices to sense-check a budget; the guide-price tool narrows them to your own size, and the site visit turns them into a written figure.
| Extension type | Example size | Standard spec (inc VAT) |
|---|---|---|
| Orangery extensions | 16 m² | £43,500 – £55,000 |
| Wraparound extensions | 25 m² | £56,000 – £71,500 |
| Kitchen extensions | 20 m² | £41,000 – £52,000 |
| Side return extensions | 11 m² | £25,500 – £32,500 |
| Conservatory replacement extensions | 14 m² | £29,000 – £38,000 |
| Single-storey rear extensions | 20 m² | £40,000 – £51,000 |
Do extensions in Lanarkshire need planning permission?
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.
Choose an extension type
- Kitchen extensions · from £26,000
- Side return extensions · from £17,500
- Building regulations for extensions · from £850
- Flat roof extensions · from £20,500
- Side extensions · from £21,500
- Timber frame extensions · from £20,500
- Annexe extensions · from £53,500
- Double-storey extensions · from £37,000
- Glass box extensions · from £29,000
- Planning permission for extensions · from £300
- Utility and boot room extensions · from £13,500
- Orangery extensions · from £29,000
- Pitched roof extensions · from £21,500
- Extensions over a garage · from £23,500
- Extension plans and drawings · from £1,150
- Conservatory replacement extensions · from £19,500
- Single-storey rear extensions · from £20,500
- Porch extensions · from £3,900
- Wraparound extensions · from £35,000
- Bungalow extensions · from £25,500
- Bedroom extensions · from £25,000
- Home office extensions · from £15,500
Neighbouring areas
Questions about extensions in Lanarkshire
How much does an extension cost in Lanarkshire?
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.
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.
Do you cover all of Lanarkshire?
Yes, across the whole of Lanarkshire. Site visits are free and there is no obligation.
Who do I contract with?
Your contract is with S&K Property Investments and Improvement Ltd, which designs and manages the project and the build teams who carry it out.
Book a free site visit in Lanarkshire
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.