Pitched roof extensions in Banbridge: design, approvals and build
From the first sketch to final sign-off, we plan and build pitched roof extensions in Banbridge and the surrounding County Down area.
- Guide price in BanbridgeFrom £19,000 inc VAT
- PlanningNI permitted development (rear 3–4 m) or planning
- Build time10–16 weeks on site
- Postcode districtsBT32

What we take care of
- Lead or proprietary flashings to the main wall
- Roof windows positioned for light and ventilation
- Insulation to current building regulations
- Vaulted ceilings or flat ceilings with storage above
- Roof design matched to the existing pitch and tiles
Working in Banbridge
Postcode districts we cover around Banbridge include BT32. Nearby, we also take on projects in Newry (12 miles), Downpatrick (23 miles), Newtownards (29 miles), Bangor, County Down (33 miles).
In Northern Ireland, extension projects follow the NI planning rules and council building control, which we account for from the first survey.
Do I need planning permission in Banbridge?
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.
Building close to a public sewer needs the agreement of NI Water, which we check during design.
Northern Ireland has no Party Wall Act. Where work is on or close to a shared boundary, we agree access and protection with your neighbour in writing before work starts.
Applications are decided by your council, which handles local planning in Northern Ireland.
Pitched roof extension prices in Banbridge
Labour and material costs vary across the UK, so for Banbridge we use our Northern Ireland factor (×0.86). The ranges include VAT and exclude design, structural and council fees.
Typical rates in Banbridge: £1,590 to £3,010 per m² including VAT, depending on specification.
| Size | Essential | Standard | Premium |
|---|---|---|---|
| 3 m × 4 m 12 m² | £19,000 – £22,500 | £22,000 – £28,500 | £28,000 – £36,500 |
| 4 m × 5 m 20 m² | £31,500 – £37,000 | £36,500 – £47,500 | £47,000 – £60,500 |
| 5 m × 6 m 30 m² | £47,500 – £55,500 | £55,000 – £71,000 | £70,500 – £90,500 |
Try the guide-price tool to see a range for your own size and finish.
From first visit to completion
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
Drawings are prepared and agreed with you, then submitted for the right planning route and building regulations approval.
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.
Questions people ask about pitched roof extensions
Can I see a price before committing to anything?
Yes. The guide prices on this page are adjusted for Banbridge, and the guide-price tool gives a range for your own size. After the survey you get a written price before anything is agreed.
Do I need building regulations approval in Banbridge?
Yes. Almost every extension needs it, whatever the planning route. We prepare the drawings and book the inspections.
Will my neighbours in Banbridge 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.
How much does a pitched roof extension cost?
Our guide range is about £1,590 to £3,010 per m² including VAT, a little more than a flat roof because of the roof structure and tiles.
Is a pitched roof better than a flat roof?
Neither is better in all cases. Pitched roofs blend with traditional houses and shed water quickly; flat roofs give more headroom and suit modern designs and lanterns.
Book a free site visit in Banbridge
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.