Extensions in County Armagh: design, planning and build
More space without moving: we plan and build extensions across County Armagh, with one team for the drawings, the council and the build.
- Towns listed3
- Price regionNorthern Ireland (×0.86)
- Planning rulesNorthern Ireland
- Postcode districts8
Towns we cover in County Armagh
Towns we cover here include Craigavon, Portadown, Armagh.
What works best for County Armagh houses?
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.
Depending on the plot, annexe extensions and single-storey rear extensions are often the strongest options, with side extensions worth considering where there is room.
Do extensions in County Armagh need planning permission?
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.
County Armagh extension prices at a glance
Prices on this page use our Northern Ireland factor of ×0.86, include VAT at 20% and cover the build; your written price follows a survey and agreed drawings.
| Extension type | Example size | Standard spec (inc VAT) |
|---|---|---|
| Extensions over a garage | 12 m² | £21,500 – £28,000 |
| Wraparound extensions | 25 m² | £49,000 – £62,500 |
| Kitchen extensions | 20 m² | £36,000 – £46,000 |
| Side return extensions | 11 m² | £22,500 – £28,500 |
| Single-storey rear extensions | 20 m² | £35,000 – £45,000 |
| Orangery extensions | 16 m² | £38,500 – £48,500 |
| Double-storey extensions | 32 m² | £49,500 – £65,000 |
Extension types and starting prices
- Home office extensions · from £13,500
- Orangery extensions · from £25,500
- Annexe extensions · from £47,000
- Single-storey rear extensions · from £18,000
- Bedroom extensions · from £22,000
- Pitched roof extensions · from £19,000
- Wraparound extensions · from £30,500
- Conservatory replacement extensions · from £17,000
- Kitchen extensions · from £23,000
- Extension plans and drawings · from £1,000
- Building regulations for extensions · from £750
- Flat roof extensions · from £18,000
- Side extensions · from £18,500
- Side return extensions · from £15,000
- Extensions over a garage · from £20,500
- Glass box extensions · from £25,500
- Utility and boot room extensions · from £12,000
- Bungalow extensions · from £22,500
- Double-storey extensions · from £32,500
- Porch extensions · from £3,400
- Timber frame extensions · from £18,000
- Planning permission for extensions · from £300
Neighbouring areas
Questions about extensions in County Armagh
How much does an extension cost in County Armagh?
With our Northern Ireland factor (×0.86), a standard-spec 20 m² single-storey extension is a guide £35,000 to £45,000 including VAT. Prices for every type are linked on this page.
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.
Can I get a price before anyone visits?
Yes. This page shows guide prices adjusted for County Armagh, and the guide-price tool gives a range for your own size and finish in about a minute.
Who do I contract with?
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.
Book a free site visit in County Armagh
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.