Two-storey wraparound extensions in Ballynahinch

Useful details for planning a two-storey wraparound extension in Ballynahinch.

Postcode districts: BT24
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: Carryduff (8 miles), Downpatrick (8.9 miles), Lisburn (10 miles)
Distance to Bangor (County Down): about 20.1 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 postcode district BT24 in and around Ballynahinch, along with neighbouring Carryduff, Downpatrick and Lisburn.

What it costs in Ballynahinch

Using our Northern Ireland rates, 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) comes to about £106,000–£145,500, including VAT. Bigger or more glazed designs cost more per m². 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	£1,740–£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 Ballynahinch

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 Ballynahinch homes

Phasing the build

A wraparound touches two sides of the house at once, so the kitchen and often the rear rooms are out of use for part of the build. We plan the sequence so you keep a working kitchen and bathroom for as long as possible, or advise when moving out briefly makes sense.

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

Free site visit
We visit your home in Ballynahinch, look at the structure, access and boundaries, and talk through what you want the new rooms to do.
Plans, then approval
Measured survey, design, then the right approval route for your house. We explain each step before we take it.
Engineer it
Foundations sized for two floors, steels for any openings, and building control approval, all before anyone starts on site.
Build
Foundations, walls, floor, roof, windows, then first and second fix. We break through into the house as late as we can.

Questions about two-storey wraparound extensions in Ballynahinch

How much does a two-storey wraparound extension cost in Ballynahinch?

Our guide for Northern Ireland, which covers Ballynahinch, 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.

Which postcodes do you cover around Ballynahinch?

We cover Ballynahinch (BT24) and nearby places including Carryduff, Downpatrick and Lisburn, plus the rest of County Down. The first site visit is free.

Do I need planning permission for a two-storey wraparound extension in Ballynahinch?

Ballynahinch is in Northern Ireland. Planning permission is usually needed.

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.

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.

Nearby

The same service in neighbouring towns:

Other extensions in Ballynahinch

All two-storey extension services in Ballynahinch · Two-storey wraparound extensions across County Down

Send us your postcode and a few details. We'll get back to you to arrange a visit and talk through your options.