Extensions in Armagh: design, planning and build
From a small utility to a two-storey addition, we take on house extensions throughout Armagh, starting with a free visit and a planning check.
- Postcode districtsBT61
- Price regionNorthern Ireland (×0.86)
- Planning rulesNorthern Ireland
- Site visitFree, no obligation

Areas we cover around Armagh
Across BT61, we can visit, measure and advise. We also work in nearby Portadown (8 miles), Craigavon (11 miles). Just over the County Down border, Banbridge is about 14 miles away.
Do extensions in 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.
Applications are decided by your council, which handles local planning in Northern Ireland.
Armagh extension prices at a glance
Use these Armagh guide prices to sense-check a budget; the guide-price tool narrows them to your own size, and the site visit turns them into a written figure.
| Extension type | Example size | Standard spec (inc VAT) |
|---|---|---|
| Orangery extensions | 16 m² | £38,500 – £48,500 |
| Single-storey rear extensions | 20 m² | £35,000 – £45,000 |
| Extensions over a garage | 12 m² | £21,500 – £28,000 |
| Wraparound extensions | 25 m² | £49,000 – £62,500 |
| Conservatory replacement extensions | 14 m² | £25,500 – £33,500 |
| Double-storey extensions | 32 m² | £49,500 – £65,000 |
Which extension suits a Armagh 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.
Start by comparing side extensions, bungalow extensions and annexe extensions: between them they cover most of the layouts we see requested for houses like these.
Every extension type in Armagh
- Extensions over a garage · from £20,500
- Flat roof extensions · from £18,000
- Glass box extensions · from £25,500
- Extension plans and drawings · from £1,000
- Side extensions · from £18,500
- Single-storey rear extensions · from £18,000
- Kitchen extensions · from £23,000
- Side return extensions · from £15,000
- Planning permission for extensions · from £300
- Bedroom extensions · from £22,000
- Bungalow extensions · from £22,500
- Wraparound extensions · from £30,500
- Pitched roof extensions · from £19,000
- Home office extensions · from £13,500
- Timber frame extensions · from £18,000
- Annexe extensions · from £47,000
- Utility and boot room extensions · from £12,000
- Double-storey extensions · from £32,500
- Building regulations for extensions · from £750
- Porch extensions · from £3,400
- Orangery extensions · from £25,500
- Conservatory replacement extensions · from £17,000
Free site visit
We visit your Armagh home, measure up, talk through what you want and check the planning position.
Design and approvals
We draw the design, agree it with you and handle planning or permitted development checks and building regulations.
Fixed written price
You receive a written, itemised price and programme. Nothing starts until you are happy with it.
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 Armagh
How much does an extension cost in Armagh?
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 you cover all of Armagh?
Yes, including the surrounding parts of County Armagh. Site visits are free and there is no obligation.
Do you handle building regulations?
Yes. We prepare the drawings and calculations, submit them and book inspections, ending with a completion certificate.
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 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.