Extending your home in Magherafelt
Every type of house extension in Magherafelt, from single-storey kitchen extensions to two-storey additions, side returns and orangeries. We design, handle the approvals and build.
- Postcode districtsBT45
- Price regionNorthern Ireland (×0.86)
- Planning rulesNorthern Ireland
- Site visitFree, no obligation
What works best for Magherafelt 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, bungalow extensions and single-storey rear extensions are often the strongest options, with annexe extensions worth considering where there is room.
Guide prices for Magherafelt
Use these Magherafelt 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 |
| Conservatory replacement extensions | 14 m² | £25,500 – £33,500 |
| Side return extensions | 11 m² | £22,500 – £28,500 |
| Wraparound extensions | 25 m² | £49,000 – £62,500 |
| Kitchen extensions | 20 m² | £36,000 – £46,000 |
| Double-storey extensions | 32 m² | £49,500 – £65,000 |
Magherafelt and surrounding towns
Our survey diary covers Magherafelt, including BT45. We also work in nearby Limavady (23 miles), Coleraine (26 miles), Derry/Londonderry (31 miles). Just over the County Tyrone border, Cookstown is about 9 miles away.
Planning rules in Magherafelt
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.
All extension types we build in Magherafelt
- Orangery extensions · from £25,500
- Home office extensions · from £13,500
- Side return extensions · from £15,000
- Side extensions · from £18,500
- Double-storey extensions · from £32,500
- Timber frame extensions · from £18,000
- Extensions over a garage · from £20,500
- Bungalow extensions · from £22,500
- Annexe extensions · from £47,000
- Flat roof extensions · from £18,000
- Glass box extensions · from £25,500
- Wraparound extensions · from £30,500
- Pitched roof extensions · from £19,000
- Bedroom extensions · from £22,000
- Planning permission for extensions · from £300
- Conservatory replacement extensions · from £17,000
- Single-storey rear extensions · from £18,000
- Utility and boot room extensions · from £12,000
- Extension plans and drawings · from £1,000
- Kitchen extensions · from £23,000
- Building regulations for extensions · from £750
- Porch extensions · from £3,400
Free site visit
It starts with a visit to your house to measure, check access and talk through ideas and budget.
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
We build it with one project manager, book the building control inspections and hand over the completion certificate.
Questions about extensions in Magherafelt
How much does an extension cost in Magherafelt?
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 Magherafelt?
Yes, including the surrounding parts of County Londonderry. Site visits are free and there is no obligation.
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.
Can I get a price before anyone visits?
Yes. This page shows guide prices adjusted for Magherafelt, and the guide-price tool gives a range for your own size and finish in about a minute.
Book a free site visit in Magherafelt
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.