Home extensions in Portadown
Looking to extend your home in Portadown? Start here: extension types, guide prices for Portadown, the planning rules that apply and how a project runs.
- Postcode districtsBT62, BT63
- Price regionNorthern Ireland (×0.86)
- Planning rulesNorthern Ireland
- Site visitFree, no obligation
Popular extension prices in Portadown
Every figure below is a guide for Portadown, adjusted for Northern Ireland build costs (×0.86) and including VAT. Design and council fees are shown separately on each page.
| Extension type | Example size | Standard spec (inc VAT) |
|---|---|---|
| Side return extensions | 11 m² | £22,500 – £28,500 |
| Wraparound extensions | 25 m² | £49,000 – £62,500 |
| Single-storey rear extensions | 20 m² | £35,000 – £45,000 |
| Kitchen extensions | 20 m² | £36,000 – £46,000 |
| Double-storey extensions | 32 m² | £49,500 – £65,000 |
Which extension suits a Portadown 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.
For many houses here, annexe extensions, bungalow extensions or single-storey rear extensions gives the most useful space for the budget.
Approvals for an extension in Portadown
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.
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.
Choose an extension type
- Planning permission for extensions · from £300
- Building regulations for extensions · from £750
- Side return extensions · from £15,000
- Glass box extensions · from £25,500
- Home office extensions · from £13,500
- Annexe extensions · from £47,000
- Bedroom extensions · from £22,000
- Timber frame extensions · from £18,000
- Porch extensions · from £3,400
- Orangery extensions · from £25,500
- Side extensions · from £18,500
- Wraparound extensions · from £30,500
- Extensions over a garage · from £20,500
- Single-storey rear extensions · from £18,000
- Flat roof extensions · from £18,000
- Bungalow extensions · from £22,500
- Utility and boot room extensions · from £12,000
- Conservatory replacement extensions · from £17,000
- Extension plans and drawings · from £1,000
- Kitchen extensions · from £23,000
- Double-storey extensions · from £32,500
- Pitched roof extensions · from £19,000
Free site visit
A designer visits, takes measurements and photos, and discusses layouts, budget and timing with you.
Design and approvals
We produce the drawings and structural design, and manage the approvals so they are in place before work starts.
Fixed written price
You receive a written, itemised price and programme. Nothing starts until you are happy with it.
Build and sign-off
We build it with one project manager, book the building control inspections and hand over the completion certificate.
Questions about extensions in Portadown
How much does an extension cost in Portadown?
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 Portadown?
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.
Can I get a price before anyone visits?
Yes. This page shows guide prices adjusted for Portadown, and the guide-price tool gives a range for your own size and finish in about a minute.
Do I need planning permission for an extension in Portadown?
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.
Book a free site visit in Portadown
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.