Two-storey wraparound extensions in Rhoose
Adding a two-storey wraparound extension in Rhoose 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 Wales.
Before you start in Rhoose, here's what applies.
- Postcode districts
- CF62
- County / area
- Cardiff and the Vale of Glamorgan, Wales
- Price region
- Wales
- Guide price
- £111,000–£152,000 (£1,980–£2,710 per m²)
- Approval route
- Usually needs planning permission, because the combined side and rear works rarely meet every permitted development test.
- Nearest towns
- Barry (3.1 miles), Llantwit Major (5.9 miles), Dinas Powys (6.9 miles)
- Distance to Cardiff
- about 9.8 miles
- First visit
- Free, no obligation
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.
Around Rhoose we also work in Barry, Llantwit Major and Dinas Powys, and across the rest of Cardiff and the Vale of Glamorgan. Postcode district in and near Rhoose: CF62.
What it costs in Rhoose
A guide price for Rhoose: around £111,000–£152,000 for an L-shaped footprint of about 28 m² wrapping the side and rear, on two floors (56 m² of new floor space). That works out at £1,980–£2,710 per m² of new floor space, including VAT at 20%. We'll give you a written design-stage price first, then a fixed build price once the drawings are agreed.
| 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 | £1,820–£2,500 per m² | £102,000–£140,000 |
| Standard | £1,980–£2,710 per m² | £111,000–£152,000 |
| Premium | £2,370–£3,260 per m² | £133,000–£182,500 |
Planning and building regulations in Rhoose
In Wales, a wraparound would have to pass both the side and rear tests to be permitted development: 10.5 m to the opposite side boundary, a 1 m set-back from the front and no more than 50% added width, plus the 4 m and 3 m rear depth limits and 10.5 m to the rear boundary. Many wraparounds therefore need a householder application, which costs £585.
Approval in Wales: Householder planning application: £585. Councils normally decide householder applications within 8 weeks.
Building regulations: Building regulations approval under the Welsh Approved Documents, which differ from England's in places (notably energy efficiency).
Design points for Rhoose homes
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.
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.
How we'd run your project
Visit and first ideas
One of our team visits your house in Rhoose, checks the walls, roof and drains, and sketches out options with you.
Get it approved
Once you're happy with the design we submit it to the council for Rhoose and deal with any questions from the planning officer.
Structure and building control
A structural engineer sizes the foundations and steels, and we get building regulations approval before work starts.
Finish and certify
Second fix, plastering and making good, then building control's final inspection and the completion paperwork.
Questions about two-storey wraparound extensions in Rhoose
Do I need planning permission for a two-storey wraparound extension in Rhoose?
Rhoose is in Wales, so Wales planning rules apply. Usually needs planning permission, because the combined side and rear works rarely meet every permitted development test. If in doubt, a lawful development certificate or a planning application gives you certainty before you build.
Which postcodes do you cover around Rhoose?
We cover Rhoose (CF62) and nearby places including Barry, Llantwit Major and Dinas Powys, plus the rest of Cardiff and the Vale of Glamorgan. The first site visit is free.
Who handles building regulations for a project in Rhoose?
We handle it as part of the project. What's needed in Wales: building regulations approval under the Welsh Approved Documents, which differ from England's in places (notably energy efficiency). We prepare the drawings and the engineer's calculations, book the inspections and pass you the completion paperwork at the end.
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.
Does a wraparound extension need steel?
Almost always. Opening the corner of the house and the old rear wall to make one open-plan space means steel beams, and often a steel post or frame at the outside corner. The structural engineer sizes these, and the steel is ordered once the design is fixed, which is one reason a wraparound needs careful sequencing.
Nearby
Other towns near Rhoose:
Other extensions in Rhoose
- 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 Rhoose · Two-storey wraparound extensions across Cardiff and the Vale of Glamorgan
Tell us about your house in Rhoose and we'll call you back to arrange a free, no-obligation visit.