Extensions in Annan: design, planning and build
Every type of house extension in Annan, from single-storey kitchen extensions to two-storey additions, side returns and orangeries. We design, handle the approvals and build.
- Postcode districtsDG12
- Price regionScotland (×0.98)
- Planning rulesScotland
- Site visitFree, no obligation

Annan extension prices at a glance
Use these Annan 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) |
|---|---|---|
| Conservatory replacement extensions | 14 m² | £29,000 – £38,000 |
| Kitchen extensions | 20 m² | £41,000 – £52,000 |
| Orangery extensions | 16 m² | £43,500 – £55,000 |
| Double-storey extensions | 32 m² | £56,000 – £74,000 |
| Extensions over a garage | 12 m² | £24,500 – £32,000 |
| Side return extensions | 11 m² | £25,500 – £32,500 |
| Wraparound extensions | 25 m² | £56,000 – £71,500 |
Planning rules in Annan
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.
Where we work near Annan
We cover Annan and the postcode districts DG12. We also work in nearby Dumfries (15 miles), Stranraer (71 miles). Just over the Scottish Borders border, Hawick is about 34 miles away.
What works best for Annan houses?
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 bungalow extensions, double-storey extensions and single-storey rear extensions: between them they cover most of the layouts we see requested for houses like these.
Every extension type in Annan
- Flat roof extensions · from £20,500
- Kitchen extensions · from £26,000
- Annexe extensions · from £53,500
- Single-storey rear extensions · from £20,500
- Timber frame extensions · from £20,500
- Double-storey extensions · from £37,000
- Extension plans and drawings · from £1,150
- Bedroom extensions · from £25,000
- Side extensions · from £21,500
- Extensions over a garage · from £23,500
- Side return extensions · from £17,500
- Bungalow extensions · from £25,500
- Building regulations for extensions · from £850
- Conservatory replacement extensions · from £19,500
- Glass box extensions · from £29,000
- Utility and boot room extensions · from £13,500
- Porch extensions · from £3,900
- Pitched roof extensions · from £21,500
- Orangery extensions · from £29,000
- Wraparound extensions · from £35,000
- Home office extensions · from £15,500
- Planning permission for extensions · from £300
Free site visit
We visit your Annan home, measure up, talk through what you want and check the planning position.
Design and approvals
We produce the drawings and structural design, and manage the approvals so they are in place before work starts.
Fixed written price
With the design and specification agreed, you get a fixed written price and a start date.
Build and sign-off
We build it with one project manager, book the building control inspections and hand over the completion certificate.
Questions about extensions in Annan
How much does an extension cost in Annan?
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 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 Annan, 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 Annan?
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.
Book a free site visit in Annan
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.