Two-storey wraparound extensions in Maghera
Adding a two-storey wraparound extension in Maghera 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 Northern Ireland.
Maghera: the key facts for this kind of project.
- Postcode districts
- BT46
- County / area
- County Londonderry, 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
- Magherafelt (6.8 miles), Dungiven (11.5 miles), Cookstown (14.2 miles)
- Distance to Derry
- about 27.4 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 Maghera we also work in Magherafelt, Dungiven and Cookstown, and across the rest of County Londonderry. Postcode district in and near Maghera: BT46.
What it costs in Maghera
For budgeting in Maghera, allow around £106,000–£145,500 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 £1,890–£2,600 per m² including VAT for Northern Ireland. Professional fees for drawings and the structural engineer are listed separately on our prices page.
| 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 Maghera
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 Maghera 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
Understand the brief
At your home in Maghera we agree what you need: bedroom count, bathroom, kitchen space, and how much garden you want to keep.
Plans, then approval
Measured survey, design, then the right approval route for your house. We explain each step before we take it.
Price it properly
Once the engineer's calculations are in, we fix the build price in writing, with a clear list of what's included.
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 Maghera
How much does a two-storey wraparound extension cost in Maghera?
Our guide for Northern Ireland, which covers Maghera, 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.
Who handles building control for a project in Maghera?
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.
Which postcodes do you cover around Maghera?
We cover Maghera (BT46) and nearby places including Magherafelt, Dungiven and Cookstown, plus the rest of County Londonderry. The first site visit is free.
How much floor space does a wraparound extension add?
It depends on the width of the side plot and the depth at the rear. Our guide prices are based on a typical wraparound with an L-shaped footprint of about 28 m² wrapping the side and rear, on two floors (56 m² of new floor space). Yours may be larger or smaller, and the measured survey shows what your plot can take.
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
Close to Maghera? We work across the area, including:
Other extensions in Maghera
- 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 Maghera · Two-storey wraparound extensions across County Londonderry
Tell us about your house in Maghera and we'll call you back to arrange a free, no-obligation visit.