Home extensions in Newry
We design and build house extensions for homes in Newry and the surrounding County Down area, with guide prices adjusted for the region.
- Postcode districtsBT35
- Price regionNorthern Ireland (×0.86)
- Planning rulesNorthern Ireland
- Site visitFree, no obligation

Newry and surrounding towns
Our survey diary covers Newry, including BT35. We also work in nearby Banbridge (12 miles), Downpatrick (28 miles), Newtownards (39 miles), Bangor, County Down (43 miles). For homes towards County Armagh, Armagh is around 17 miles away.
Guide prices for Newry
We publish guide prices so you can budget before anyone visits. For Newry they are adjusted by ×0.86, the factor we use across Northern Ireland.
| Extension type | Example size | Standard spec (inc VAT) |
|---|---|---|
| Double-storey extensions | 32 m² | £49,500 – £65,000 |
| Conservatory replacement extensions | 14 m² | £25,500 – £33,500 |
| Side return extensions | 11 m² | £22,500 – £28,500 |
| Single-storey rear extensions | 20 m² | £35,000 – £45,000 |
| Extensions over a garage | 12 m² | £21,500 – £28,000 |
| Kitchen extensions | 20 m² | £36,000 – £46,000 |
Which extension suits a Newry home?
Northern Ireland's housing ranges from city terraces to large numbers of detached houses and bungalows on rural plots, many in render, where single-storey extensions fit easily.
The types we would usually look at first for a home in Newry are side extensions, bungalow extensions and annexe extensions, depending on the garden and how the house is laid out.
Approvals for an extension in Newry
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.
In a conservation area or area of townscape character the permitted development rights are more limited, listed homes need listed building consent, and if rights have been removed by a condition, any extension needs an application.
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.
Choose an extension type
- Timber frame extensions · from £18,000
- Extension plans and drawings · from £1,000
- Orangery extensions · from £25,500
- Side extensions · from £18,500
- Bedroom extensions · from £22,000
- Flat roof extensions · from £18,000
- Side return extensions · from £15,000
- Utility and boot room extensions · from £12,000
- Planning permission for extensions · from £300
- Double-storey extensions · from £32,500
- Building regulations for extensions · from £750
- Bungalow extensions · from £22,500
- Kitchen extensions · from £23,000
- Annexe extensions · from £47,000
- Porch extensions · from £3,400
- Glass box extensions · from £25,500
- Single-storey rear extensions · from £18,000
- Conservatory replacement extensions · from £17,000
- Pitched roof extensions · from £19,000
- Extensions over a garage · from £20,500
- Wraparound extensions · from £30,500
- Home office extensions · from £13,500
Free site visit
It starts with a visit to your house to measure, check access and talk through ideas and budget.
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 about extensions in Newry
How much does an extension cost in Newry?
Using our Northern Ireland factor (×0.86), a standard-spec single-storey extension of 20 m² is a guide £35,000 to £45,000 including VAT, and a 32 m² two-storey extension £49,500 to £65,000. Your written price follows the survey.
Do I need planning permission for an extension in Newry?
Not always. It depends on the size, position and your property's history. In Northern Ireland some single-storey rear extensions are permitted development; larger ones need planning permission.
Do you cover all of Newry?
Yes, including the surrounding parts of County Down. Site visits are free and there is no obligation.
Will my neighbours need to be told?
If you apply for planning permission the council notifies neighbours, and we agree access with them in writing for work near a shared boundary.
Book a free site visit in Newry
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.