Two-storey wraparound extensions in Dunoon
Adding a two-storey wraparound extension in Dunoon gives you two new rooms stacked on one footprint. Here's how we'd approach it, what it typically costs and the rules that apply in Scotland.
We take on projects in Dunoon by arrangement. Site visits here aren't free as standard, and we'll agree travel costs with you in writing first.
Quick reference for homeowners in Dunoon.
- Postcode districts
- PA22 and PA23
- County / area
- Argyll and Bute, Scotland
- Price region
- Scotland
- Guide price
- £113,000–£155,500 (£2,020–£2,770 per m²)
- Approval route
- Planning permission is usually needed: Class 1B permitted development only applies if every part of the extension is at least 10 m from all boundaries. A building warrant is needed before work starts.
- Nearest towns
- Gourock (4.3 miles), Greenock (6.4 miles), Helensburgh (8.7 miles)
- Distance to Helensburgh
- about 8.7 miles
- First visit
- By arrangement
About a two-storey wraparound extension
A two-storey wraparound extension is an L-shaped addition that extends both the side and the rear of your house, on two floors. It gives one of the largest gains in floor space of any extension, typically a big open-plan kitchen and living area below and two or more bedrooms or bathrooms above.
Dunoon sits about 8.7 miles from Helensburgh. Closer to home, Gourock is 4.3 miles away and Greenock 6.4 miles.
What it costs in Dunoon
For budgeting in Dunoon, allow around £113,000–£155,500 for a two-storey wraparound extension with an L-shaped footprint of about 28 m² wrapping the side and rear, on two floors (56 m² of new floor space). That's based on £2,020–£2,770 per m² including VAT for Scotland. Steelwork for wide openings is the item most likely to move the figure; we'll know once the engineer has designed it.
| Spec | Per m² | An L-shaped footprint of about 28 m² wrapping the side and rear, on two floors (56 m² of new floor space) |
|---|---|---|
| Essential | £1,860–£2,550 per m² | £104,000–£143,000 |
| Standard | £2,020–£2,770 per m² | £113,000–£155,500 |
| Premium | £2,430–£3,330 per m² | £136,000–£186,500 |
Planning and building standards in Dunoon
In Scotland, a two-storey wraparound would need to be at least 10 m from every boundary to be permitted development under Class 1B, and not on an elevation fronting a road. That is rarely possible, so plan for a householder planning application, which costs £371 and is decided within two months, followed by a building warrant before work starts.
Approval in Scotland: Householder planning application: £371. Councils have two months to decide a local planning application.
Building standards: A building warrant from the council's building standards service before work starts, and a completion certificate at the end. Scotland uses its own Technical Handbooks.
Design points for Dunoon homes
The corner post
At the outside corner of the L, there is no existing wall to carry the floor above. Opening the ground floor fully usually means a steel frame or a corner post, and the engineer's design sets how slim it can be. We decide early whether you want a clear corner or a visible post.
Two roofs that meet
A wraparound needs the side roof and rear roof to join cleanly, often with a valley or hip where they meet. Getting pitches and ridge heights right keeps rainwater moving and avoids a bulky mass at the back corner, which neighbours and planners notice.
How we'd run your project
Visit by arrangement
We agree a visit to your home in Dunoon and any travel costs with you in writing first, then look at the structure, access and boundaries.
Drawings and permission
Our designers produce plans and elevations, then we take care of planning or permitted development checks with the council covering Dunoon.
Fixed price in writing
With approved drawings and calculations, we give you a fixed build price and a programme you can plan around.
On site
One project lead runs the job, keeps you updated and arranges inspections at each stage until completion.
Questions about two-storey wraparound extensions in Dunoon
How long does a two-storey wraparound extension take?
Allow 4 to 8 weeks for survey and design, then the approval period (councils have two months to decide a local planning application), then 4 to 8 weeks of technical design, which can overlap. The build itself usually takes 14 to 20 weeks, longer for large or complex designs.
How much does a two-storey wraparound extension cost in Dunoon?
Our guide for Scotland, which covers Dunoon, is £2,020–£2,770 per m² including VAT. A typical project with an L-shaped footprint of about 28 m² wrapping the side and rear, on two floors (56 m² of new floor space) comes to about £113,000–£155,500. Design and approval fees are extra, and we fix the build price in writing once the design is agreed.
Do I need planning permission for a two-storey wraparound extension in Dunoon?
Dunoon is in Scotland. Planning permission is usually needed: Class 1B permitted development only applies if every part of the extension is at least 10 m from all boundaries. A building warrant is needed before work starts.
Is a wraparound extension better than separate side and rear extensions?
Building both at once usually costs less than two separate projects, because you pay for one set-up, one scaffold, one roof junction and one set of approvals. It also lets the layout be designed as a whole. The trade-off is a larger single outlay and a longer build, often 16 to 24 weeks at this size.
Can a wraparound extension be part single, part two-storey?
Yes. Many wraparounds keep the rear part single storey with roof lights over the kitchen and put the two-storey part to the side. This can reduce the effect on neighbours and the cost. We set out both options at the design stage, so you can compare floor space against price before choosing.
Nearby
Close to Dunoon? We work across the area, including:
Other extensions in Dunoon
- Rear
- Side
- Part two-storey
- Over a garage
- First floor
- Semi-detached
- Detached
- Kitchen and bedrooms
- Bedroom and en-suite
All two-storey extension services in Dunoon · Two-storey wraparound extensions across Argyll and Bute
The quickest next step is a visit. We'll look at your house in Dunoon and give you an honest view of the options.