Two-storey wraparound extensions in Newcastle
If you live in Newcastle and need more room without moving, a two-storey wraparound extension is worth a serious look. We handle the drawings, approvals, structure and build.
The basics for Newcastle at a glance.
- Postcode districts
- BT31 and BT33
- County / area
- County Down, Northern Ireland
- Price region
- Northern Ireland
- Guide price
- £106,000–£145,500 (£1,890–£2,600 per m²)
- Approval route
- Planning permission is usually needed.
- Nearest towns
- Downpatrick (10.4 miles), Kilkeel (11.7 miles), Ballynahinch (12.7 miles)
- Distance to Bangor (County Down)
- about 31.9 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.
We cover Newcastle (BT31 and BT33) and the places around it, including Downpatrick (10.4 miles), Kilkeel (11.7 miles) and Ballynahinch.
What it costs in Newcastle
In Northern Ireland, which includes Newcastle, we'd expect a two-storey wraparound extension to cost around £106,000–£145,500 for an L-shaped footprint of about 28 m² wrapping the side and rear, on two floors (56 m² of new floor space), or £1,890–£2,600 per m² including VAT. The fastest way to a firmer number is a free site visit, after which we price the design stage in writing.
| 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 | £1,740–£2,390 per m² | £97,500–£133,500 |
| Standard | £1,890–£2,600 per m² | £106,000–£145,500 |
| Premium | £2,270–£3,120 per m² | £127,000–£174,500 |
Planning and building control in Newcastle
In Northern Ireland, the permitted development allowance for two-storey extensions covers rear extensions of up to 3 m that stay 7 m from the rear boundary. A wraparound adds a side element on two floors, so it normally needs a planning application. The fee is £347 per dwelling, and councils aim for an average of 15 weeks for local applications.
Approval in Northern Ireland: Planning application for works to a house: £347. Councils aim to decide local applications within an average of 15 weeks; many take longer.
Building control: Building control approval from the local council under the Building Regulations (Northern Ireland), using the Technical Booklets.
Design points for Newcastle 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
Free site visit
We visit your home in Newcastle, look at the structure, access and boundaries, and talk through what you want the new rooms to do.
Design and approvals
We draw the extension and check it against the rules for Northern Ireland, then apply for planning permission or a certificate of lawfulness, whichever fits.
Detail and price
Construction drawings, engineer's calculations and building control sign-off, then a written fixed price for the build.
Build and hand over
We manage the build from groundworks to decoration-ready finish and hand over with the completion paperwork.
Questions about two-storey wraparound extensions in Newcastle
Who handles building control for a project in Newcastle?
We handle it as part of the project. What's needed in Northern Ireland: building control approval from the local council under the Building Regulations (Northern Ireland), using the Technical Booklets. We prepare the drawings and the engineer's calculations, book the inspections and pass you the completion paperwork at the end.
How much does a two-storey wraparound extension cost in Newcastle?
Our guide for Northern Ireland, which covers Newcastle, is £1,890–£2,600 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 £106,000–£145,500. 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 Newcastle?
Newcastle is in Northern Ireland. Planning permission is usually needed.
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.
Can I stay at home during a wraparound extension?
Many people do, but a wraparound affects two sides of the house and usually the kitchen, so there will be weeks without a full kitchen. We plan a temporary kitchen, keep a route through the house and seal off the work area. For some families, moving out while the rear wall is opened up is easier.
Nearby
Nearby towns we cover for two-storey wraparound extensions:
Other extensions in Newcastle
- 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 Newcastle · Two-storey wraparound extensions across County Down
The quickest next step is a visit. We'll look at your house in Newcastle and give you an honest view of the options.