Dungannon, County Tyrone
Semi-detached rear extension in Dungannon
Single or two-storey extensions for semi-detached houses, with side access and one party wall. If you live in Dungannon and want to know what a semi-detached rear extension would cost and whether it needs planning, start with the online guide price or a free site visit.
Dungannon is covered from our County Tyrone round, including BT71. Semi-detached houses are common across County Tyrone, and their side access makes rear extensions quicker to build.
Book a free site visit
Tell us about the house and we'll call to arrange a free, no-obligation visit.
How much does a semi-detached rear extension cost in Dungannon?
For Dungannon we work from the Northern Ireland rate: £1,650–£2,700 per square metre of new floor, including VAT, standard specification. Northern Ireland prices are the lowest in our range.
| Size | Guide price inc VAT |
|---|---|
| 3 m wide × 4 m deep (12 m²) | £20,000–£32,500 |
| 4 m wide × 5 m deep (20 m²) | £33,000–£54,000 |
| 4 m wide × 6 m deep (24 m²) | £39,500–£64,500 |
We put a fixed price in writing once the design is agreed, and explain any provisional sums such as foundations.
Do you need planning permission for a semi-detached rear extension in Dungannon?
Whether your semi-detached rear extension in Dungannon needs a planning application depends on its size, your house and any local restrictions.
Northern Ireland's permitted development rules allow a single-storey rear extension of 3 metres on terraced and semi-detached houses and 4 metres on detached houses, with a 4 metre height limit. Listed buildings, conservation areas and houses with removed rights need planning permission from the council.
Northern Ireland's 2015 Order allows a two-storey rear extension of up to 3 metres where at least 7 metres is left to the rear boundary. Anything larger, or in a conservation area, needs a planning application to the council.
Northern Ireland has no larger-extension prior approval route; anything beyond permitted development needs a planning application.
Conservation areas, Areas of Outstanding Natural Beauty and listed buildings restrict permitted development in Northern Ireland. Before any drawing we look up the property's history with the council, because earlier extensions and removed rights change the answer.
What are homes in Dungannon like to extend?
Semis and detached houses are typical of Dungannon, and many have room for a rear extension within Northern Ireland's permitted development limits.
How a semi-detached rear extension in Dungannon comes together
Survey visit
We visit free of charge, measure up, check access, drainage and neighbours' extensions, and note what you want the room to do.
Design and guide price
Two or three layout options with a guide price for each, so you choose the design knowing what it costs.
Paperwork handled
Planning or permitted development, building control approval, structural design and neighbour agreements are all handled by us.
Build and sign-off
We build to the approved drawings with regular updates, then hand over the building control completion certificate and any guarantees from suppliers.
Semi-detached rear extensions near Dungannon
Close by, we work in Coalisland, about 3.7 miles away, and Cookstown, about 9.7 miles away.
- Semi-detached rear extension in Coalisland
- Semi-detached rear extension in Cookstown
- Semi-detached rear extension in Armagh
- Semi-detached rear extension in Portadown
- Semi-detached rear extension in Craigavon
Other work in Dungannon:
FAQ
Semi-detached rear extension questions in Dungannon
Do you handle building control in Dungannon?
Yes. We apply to the council's building control team and hand over the completion certificate.
Can I live at home while the extension is built?
Usually yes. Most of the work is outside until the back wall is opened near the end, and that stage is screened off.
Can I match pebbledash or render?
Yes. Many semis are refinished with new render across the whole back elevation so old and new match.
Will I need a structural engineer?
Yes for the beam over the new opening and usually the foundations; we arrange them and their calculations go to building control.
Who will build my extension?
Vetted building teams working under contract to us. Your contract is with S&K Property Investments and Improvement Ltd for the design and the build.
Can I get a price without a visit?
Our online guide-price tool gives a range in a couple of minutes. A written price needs a survey.