Home office extensions in Bangor, County Down: design, approvals and build
Our design and build teams take on home office extensions in Bangor, County Down, from the first measured survey through planning and building control to the finished room.
- Guide price in Bangor, County DownFrom £13,500 inc VAT
- PlanningNI permitted development (rear 3–4 m) or planning
- Build time8–12 weeks on site
- Postcode districtsBT19, BT20
Do I need planning permission in Bangor, County Down?
In Northern Ireland the Planning (General Permitted Development) Order 2015 lets some single-storey rear extensions go ahead without planning permission, up to 3 m on a semi-detached or terraced house and 4 m on a detached house, within height and boundary limits. Larger, side and two-storey extensions normally need planning permission from the council, and building control approval is separate.
Homes in conservation areas, areas of townscape character and listed buildings have tighter rules, so we always check the property's status and planning history before design starts.
In Northern Ireland building control is run by the councils under the Building Regulations (Northern Ireland). We submit full plans or a building notice and book the inspections through to completion.
Applications are decided by your council, which handles local planning in Northern Ireland.
When a home office extension makes sense
- Homes where a loft or garden room is not practical
- People who work from home most of the week
- Households that need a second quiet room
Working in Bangor, County Down
Across BT19, BT20, we can visit, measure and advise. The same team covers Newtownards (5 miles), Downpatrick (23 miles), Banbridge (33 miles), Newry (43 miles), all within easy reach.
For homes towards County Antrim, Carrickfergus is around 7 miles away. In Northern Ireland, extension projects follow the NI planning rules and council building control, which we account for from the first survey.
How much does a home office extension cost in Bangor, County Down?
Prices below are for Bangor, County Down, using the Northern Ireland factor of ×0.86. They are guide ranges including VAT for the build only, not a quote.
Typical rates in Bangor, County Down: £1,590 to £2,920 per m² including VAT, depending on specification.
| Size | Essential | Standard | Premium |
|---|---|---|---|
| 2.5 m × 3.2 m 8 m² | £13,500 – £16,500 | £14,500 – £19,000 | £18,500 – £23,500 |
| 3 m × 3.6 m 11 m² | £17,500 – £21,000 | £20,000 – £26,000 | £25,500 – £32,500 |
| 3 m × 5 m 15 m² | £23,500 – £28,500 | £27,500 – £35,000 | £34,500 – £44,000 |
Want a range for your exact size? The guide-price tool takes about a minute.
What happens next
Site visits are free and there is no obligation. Where drawings are needed, the design stage is priced in writing before it starts.
Free site visit
First, a site visit: we look at the house, garden, access and drains and listen to what you need.
Design and approvals
Once the layout is agreed, we deal with the council: planning permission or written confirmation that none is needed, plus building control.
Fixed written price
With the design and specification agreed, you get a fixed written price and a start date.
Build and sign-off
Work is carried out to the agreed programme, inspected by building control and signed off at the end.
Your questions about a home office extension in Bangor, County Down
Will my neighbours in Bangor, County Down be involved?
If a planning application is needed, the council notifies neighbours. Where work is close to a shared boundary, we agree access and protection with them in writing.
Do you cover all of Bangor, County Down?
Yes, across the whole of Bangor, County Down. Site visits are free and there is no obligation.
Who do I contract with for a home office extension in Bangor, County Down?
Your contract is with S&K Property Investments and Improvement Ltd, which designs and manages the project and the build teams who carry it out.
How much does a home office extension cost?
Our guide range is about £1,590 to £2,920 per m² including VAT. An 11 m² standard-spec office is typically £20,000 to £26,000 in Bangor, County Down.
Can I claim the cost against tax?
Building work on your home is not normally an allowable business expense, and claiming it can have capital gains tax effects. Speak to an accountant before assuming any tax relief.
Book a free site visit in Bangor, County Down
We will measure up, check the planning position and give you honest guide figures.
- Free, no-obligation site visit
- Planning route checked before you spend on drawings
- Written price once the design is agreed
- Building control sign-off at the end
Prefer to talk? Call 0800 088 6341 or .
Book a free site visit
Tell us a little about the project and we will arrange a time.