Bungalow extensions across Dunoon
Dunoon projects are quoted by arrangement: we plan the design, approvals and build carefully around travel and material deliveries, and confirm any travel costs up front.
- Guide price in DunoonFrom £25,500 inc VAT
- PlanningScottish householder rules; building warrant needed
- Build time10–18 weeks on site
- Postcode districtsPA23

Working in Dunoon
Across PA23, we can visit, measure and advise. Island and remote projects are planned individually, with travel, deliveries and accommodation for the team agreed before the survey.
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.
Is a bungalow extension right for your house?
- Bungalows on larger plots
- Families wanting more space on one floor
- Homeowners planning for later life
What should I budget for a bungalow extension in Dunoon?
Prices below are for Dunoon, using the Scotland factor of ×0.98. They are guide ranges including VAT for the build only, not a quote.
Typical rates in Dunoon: £1,720 to £3,330 per m² including VAT, depending on specification.
| Size | Essential | Standard | Premium |
|---|---|---|---|
| 3 m × 5 m 15 m² | £25,500 – £31,000 | £30,000 – £39,000 | £38,000 – £50,000 |
| 4 m × 6 m 24 m² | £41,000 – £49,500 | £48,000 – £62,500 | £61,000 – £80,000 |
| L-shape 35 m² | £60,000 – £72,500 | £70,000 – £91,000 | £89,000 – £117,000 |
Try the guide-price tool to see a range for your own size and finish.
Do I need planning permission 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. Separately, almost every extension needs a building warrant from the council before work starts.
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.
Building close to a public sewer needs the agreement of Scottish Water, which we check during design.
Applications are decided by your council as planning authority.
Our process, step by step
Visits to Dunoon are arranged around travel; we confirm any travel costs in writing before the survey.
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
We draw the design, agree it with you and handle planning or permitted development checks and building regulations.
Fixed written price
We confirm the build price in writing, based on the approved drawings and the finishes you have chosen.
Build and sign-off
Work is carried out to the agreed programme, inspected by building control and signed off at the end.
Questions people ask about bungalow extensions
How long does a bungalow extension take to build in Dunoon?
On site, typically 10 to 18 weeks once approvals are in place. Before that, allow 6–14 weeks design and approvals.
Who do I contract with for a bungalow extension in Dunoon?
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.
Can I see a price before committing to anything?
Yes. The guide prices on this page are adjusted for Dunoon, and the guide-price tool gives a range for your own size. After the survey you get a written price before anything is agreed.
How much does a bungalow extension cost?
Our guide range for single-storey work is about £1,720 to £3,330 per m² including VAT. Going upwards is priced after a structural survey.
Is it better to extend sideways or upwards?
Sideways and rearwards is usually simpler, cheaper and keeps single-level living. Upwards saves garden but means stairs, more structure and planning permission.
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.