Extending your home in Cookstown
Looking to extend your home in Cookstown? Start here: extension types, guide prices for Cookstown, the planning rules that apply and how a project runs.
- Postcode districtsBT80
- Price regionNorthern Ireland (×0.86)
- Planning rulesNorthern Ireland
- Site visitFree, no obligation

Choosing the right extension in Cookstown
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 Cookstown are bungalow extensions, side extensions and single-storey rear extensions, depending on the garden and how the house is laid out.
Planning and building control in Cookstown
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.
Covering Cookstown and nearby
Our survey diary covers Cookstown, including BT80. Nearby, we also take on projects in Omagh (22 miles), Strabane (30 miles). Magherafelt, in County Londonderry, is roughly 9 miles from Cookstown and also on our list.
Guide prices for Cookstown
We publish guide prices so you can budget before anyone visits. For Cookstown they are adjusted by ×0.86, the factor we use across Northern Ireland.
| Extension type | Example size | Standard spec (inc VAT) |
|---|---|---|
| Conservatory replacement extensions | 14 m² | £25,500 – £33,500 |
| Orangery extensions | 16 m² | £38,500 – £48,500 |
| Extensions over a garage | 12 m² | £21,500 – £28,000 |
| Kitchen extensions | 20 m² | £36,000 – £46,000 |
| Double-storey extensions | 32 m² | £49,500 – £65,000 |
| Side return extensions | 11 m² | £22,500 – £28,500 |
| Single-storey rear extensions | 20 m² | £35,000 – £45,000 |
All extension types we build in Cookstown
- Single-storey rear extensions · from £18,000
- Planning permission for extensions · from £300
- Annexe extensions · from £47,000
- Home office extensions · from £13,500
- Extension plans and drawings · from £1,000
- Conservatory replacement extensions · from £17,000
- Pitched roof extensions · from £19,000
- Bungalow extensions · from £22,500
- Utility and boot room extensions · from £12,000
- Orangery extensions · from £25,500
- Extensions over a garage · from £20,500
- Timber frame extensions · from £18,000
- Side return extensions · from £15,000
- Kitchen extensions · from £23,000
- Bedroom extensions · from £22,000
- Building regulations for extensions · from £750
- Double-storey extensions · from £32,500
- Flat roof extensions · from £18,000
- Side extensions · from £18,500
- Glass box extensions · from £25,500
- Porch extensions · from £3,400
- Wraparound extensions · from £30,500
Free site visit
We visit your Cookstown home, measure up, talk through what you want and check the planning position.
Design and approvals
Once the layout is agreed, we deal with the council: planning permission or written confirmation that none is needed, plus building control.
Fixed written price
The price is fixed in writing once the design is settled, with a clear programme and payment stages.
Build and sign-off
The build is managed from start to finish, inspected at each stage and signed off on completion.
Questions about extensions in Cookstown
How much does an extension cost in Cookstown?
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.
Can I get a price before anyone visits?
Yes. This page shows guide prices adjusted for Cookstown, 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.
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 Cookstown
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.