House extensions in Musselburgh
Planning an extension in Musselburgh? Compare extension types, see guide prices adjusted for Musselburgh and book a free site visit.
- Postcode districtsEH21
- Price regionScotland (×0.98)
- Planning rulesScotland
- Site visitFree, no obligation

Areas we cover around Musselburgh
Our survey diary covers Musselburgh, including EH21. The same team covers Bonnyrigg (5 miles), Edinburgh (6 miles), Penicuik (10 miles), Broxburn (16 miles), Livingston (18 miles), all within easy reach. Just over the Fife border, Kirkcaldy is about 13 miles away.
Choosing the right extension in Musselburgh
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.
Start by comparing single-storey rear extensions, double-storey extensions and bungalow extensions: between them they cover most of the layouts we see requested for houses like these.
Popular extension prices in Musselburgh
We publish guide prices so you can budget before anyone visits. For Musselburgh they are adjusted by ×0.98, the factor we use across Scotland.
| Extension type | Example size | Standard spec (inc VAT) |
|---|---|---|
| Conservatory replacement extensions | 14 m² | £29,000 – £38,000 |
| Wraparound extensions | 25 m² | £56,000 – £71,500 |
| Single-storey rear extensions | 20 m² | £40,000 – £51,000 |
| Orangery extensions | 16 m² | £43,500 – £55,000 |
| Side return extensions | 11 m² | £25,500 – £32,500 |
| Double-storey extensions | 32 m² | £56,000 – £74,000 |
Planning rules in Musselburgh
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.
All extension types we build in Musselburgh
- Bungalow extensions · from £25,500
- Utility and boot room extensions · from £13,500
- Side extensions · from £21,500
- Double-storey extensions · from £37,000
- Porch extensions · from £3,900
- Annexe extensions · from £53,500
- Conservatory replacement extensions · from £19,500
- Glass box extensions · from £29,000
- Extension plans and drawings · from £1,150
- Side return extensions · from £17,500
- Pitched roof extensions · from £21,500
- Single-storey rear extensions · from £20,500
- Flat roof extensions · from £20,500
- Timber frame extensions · from £20,500
- Planning permission for extensions · from £300
- Wraparound extensions · from £35,000
- Orangery extensions · from £29,000
- Kitchen extensions · from £26,000
- Bedroom extensions · from £25,000
- Extensions over a garage · from £23,500
- Building regulations for extensions · from £850
- Home office extensions · from £15,500
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
We draw the design, agree it with you and handle planning or permitted development checks and building regulations.
Fixed written price
The price is fixed in writing once the design is settled, with a clear programme and payment stages.
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 Musselburgh
How much does an extension cost in Musselburgh?
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.
Do I need planning permission for an extension in Musselburgh?
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.
Can I get a price before anyone visits?
Yes. This page shows guide prices adjusted for Musselburgh, and the guide-price tool gives a range for your own size and finish in about a minute.
Do you cover all of Musselburgh?
Yes, including the surrounding parts of Edinburgh and the Lothians. Site visits are free and there is no obligation.
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.
Book a free site visit in Musselburgh
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.