Extending your home in Dunoon
We take on house extensions in Dunoon by arrangement. Because of travel and logistics, we agree the programme and any travel costs in writing before the survey.
- Postcode districtsPA23
- Price regionScotland (×0.98)
- Planning rulesScotland
- Site visitBy arrangement
Covering Dunoon and nearby
Our survey diary covers Dunoon, including PA23. Island and remote projects are planned individually, with travel, deliveries and accommodation for the team agreed before the survey.
Approvals for an extension in Dunoon
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.
Dunoon extension prices at a glance
Every figure below is a guide for Dunoon, 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) |
|---|---|---|
| Conservatory replacement extensions | 14 m² | £29,000 – £38,000 |
| Single-storey rear extensions | 20 m² | £40,000 – £51,000 |
| Extensions over a garage | 12 m² | £24,500 – £32,000 |
| Side return extensions | 11 m² | £25,500 – £32,500 |
| Double-storey extensions | 32 m² | £56,000 – £74,000 |
| Wraparound extensions | 25 m² | £56,000 – £71,500 |
Choosing the right extension in Dunoon
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, double-storey extensions and bungalow extensions: between them they cover most of the layouts we see requested for houses like these.
Extension types and starting prices
- Flat roof extensions · from £20,500
- Glass box extensions · from £29,000
- Conservatory replacement extensions · from £19,500
- Side extensions · from £21,500
- Annexe extensions · from £53,500
- Extensions over a garage · from £23,500
- Wraparound extensions · from £35,000
- Double-storey extensions · from £37,000
- Porch extensions · from £3,900
- Single-storey rear extensions · from £20,500
- Planning permission for extensions · from £300
- Side return extensions · from £17,500
- Bungalow extensions · from £25,500
- Extension plans and drawings · from £1,150
- Pitched roof extensions · from £21,500
- Bedroom extensions · from £25,000
- Orangery extensions · from £29,000
- Timber frame extensions · from £20,500
- Building regulations for extensions · from £850
- Kitchen extensions · from £26,000
- Utility and boot room extensions · from £13,500
- Home office extensions · from £15,500
Site visit by arrangement
It starts with a visit to your house to measure, check access and talk through ideas and budget.
Design and approvals
Drawings are prepared and agreed with you, then submitted for the right planning route and building regulations approval.
Fixed written price
You receive a written, itemised price and programme. Nothing starts until you are happy with it.
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 Dunoon
How much does an extension cost in Dunoon?
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 Dunoon, and the guide-price tool gives a range for your own size and finish in about a minute.
Do you cover all of Dunoon?
Yes, by arrangement: travel and any associated costs are agreed in writing before the survey.
Do I need planning permission for an extension in Dunoon?
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.
Talk to us about a project in Dunoon
We will talk through the project, the planning position and how we would organise the visit and the build.
- Site visit arranged around travel, costs agreed first
- 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 .
Send us your project details
Tell us a little about the project and we will arrange a time.