County Down
Rear extension plans and planning applications in County Down
Measured survey, design options, planning drawings and the application, handled for you. Rear extensions in County Down: we cover 8 towns including Bangor, Castlereagh and Newtownards, with design, approvals and the build under one contract.
Planning applications in Bangor go to the local planning authority, and we check its local design guidance for rear extensions before drawing. County Down has terraces near the centre, semis on the edges and many detached houses and bungalows in the surrounding countryside, where plots are often generous.
What does it cost in County Down?
As a guide, £1,000–£2,500 including VAT. Your written price follows a measured survey and an agreed design, so it reflects your house, not an average.
Do you need planning permission in County Down?
In Northern Ireland a rear extension of more than one storey can be permitted development if it projects no more than 3 metres and stays at least 7 metres from the rear boundary. Two-storey extensions in conservation areas, and most larger schemes, need planning permission from the council.
Conservation areas, Areas of Outstanding Natural Beauty and listed buildings restrict permitted development in Northern Ireland.
Planning fees in Northern Ireland are set by the Department for Infrastructure; we confirm the current householder fee when we submit.
Northern Ireland councils work to a 15-week target for local applications, which include householder extensions; many householder decisions come sooner.
Where in County Down do we work?
FAQ
Questions people ask
Do I need an architect?
You need accurate drawings by someone who knows householder planning; we provide them.
Can I see the design in 3D?
Yes; we produce simple 3D views so you can judge the size and light.
Do neighbours get consulted?
Yes for a full application: the council writes to them or puts up a site notice.
Do you cover all of County Down?
We cover 8 towns and districts in County Down, including Bangor, Castlereagh and Newtownards.
Who builds the extension?
Vetted building teams working under contract to us; your contract is with S&K Property Investments and Improvement Ltd.