Portstewart, County Londonderry
Kitchen-diner rear extension in Portstewart
We plan and build kitchen-diner rear extensions for homeowners in Portstewart. An open-plan kitchen, dining and family room that opens straight onto the garden. Start with a free site visit, then a written price once the design is agreed.
We cover Portstewart (BT55) as part of our County Londonderry work. We usually keep the working kitchen where the old one was and put the dining table in the new space by the doors, which suits most Portstewart homes.
Book a free site visit
Tell us about the house and we'll call to arrange a free, no-obligation visit.
How much does a kitchen-diner rear extension cost in Portstewart?
For Portstewart we work from the Northern Ireland rate: £1,650–£2,700 per square metre of new floor, including VAT, standard specification. Northern Ireland prices are the lowest in our range.
| Size | Guide price inc VAT |
|---|---|
| 3 m wide × 4 m deep (12 m²) | £20,000–£32,500 |
| 4 m wide × 5 m deep (20 m²) | £33,000–£54,000 |
| 4 m wide × 6 m deep (24 m²) | £39,500–£64,500 |
We put a fixed price in writing once the design is agreed, and explain any provisional sums such as foundations.
Do you need planning permission for a kitchen-diner rear extension in Portstewart?
Here is how the rules in Northern Ireland apply to a kitchen-diner rear extension in Portstewart.
In Northern Ireland the Planning (General Permitted Development) Order (Northern Ireland) 2015 allows a single-storey rear extension of up to 3 metres on an attached house or 4 metres on a detached house, no higher than 4 metres, with eaves no higher than 3 metres within 2 metres of a boundary. Building control approval from the council is still required.
Northern Ireland has no larger-extension prior approval route; anything beyond permitted development needs a planning application.
Conservation areas, Areas of Outstanding Natural Beauty and listed buildings restrict permitted development in Northern Ireland. Before any drawing we look up the property's history with the council, because earlier extensions and removed rights change the answer.
What are homes in Portstewart like to extend?
Semis and detached houses are typical of Portstewart, and many have room for a rear extension within Northern Ireland's permitted development limits.
How a kitchen-diner rear extension in Portstewart comes together
Look round and measure
A free visit to see the back of the house, measure it, check the drains and boundaries and hear what you need.
Options and costs
We draw layout options and price each one, so the budget shapes the design rather than surprising you later.
Planning and regulations
We take the design through the right planning route, then produce the construction drawings and engineer's calculations for council building control.
Fixed price and build
A written price for the agreed design, a start date and a named contact through the build, ending with the building control completion certificate.
Kitchen-diner rear extensions near Portstewart
From Portstewart, the nearest places we also cover are Coleraine (3.8 miles) and Limavady (13.0 miles).
- Kitchen-diner rear extension in Coleraine
- Kitchen-diner rear extension in Limavady
- Kitchen-diner rear extension in Derry~Londonderry
- Kitchen-diner rear extension in Ballymena
- Kitchen-diner rear extension in Magherafelt
Other work in Portstewart:
FAQ
Kitchen-diner rear extension questions in Portstewart
Who will build my extension?
Vetted building teams working under contract to us. Your contract is with S&K Property Investments and Improvement Ltd for the design and the build.
Is the site visit in Portstewart free?
Yes. We visit, measure up and talk through the options with no cost and no obligation.
Can I have underfloor heating?
Yes. Wet underfloor heating in the new screed is the usual choice, often with the old room's radiators kept or replaced.
How much does a kitchen-diner rear extension cost in Portstewart?
As a guide, £1,650–£2,700 per square metre including VAT for a standard specification. For example, 3 m wide × 4 m deep (12 m²): about £20,000–£32,500 at that rate. Your written price follows the survey.
Will I need a structural engineer?
Yes for the beam over the new opening and usually the foundations; we arrange them and their calculations go to building control.
Can you match the brick or stone on my Portstewart house?
We source the closest match and show you samples before ordering; reclaimed materials are often the best match on older houses.