Derry/Londonderry porch extensions, designed and built
A porch extension in Derry/Londonderry starts with the right design and the right approval route. We take care of both, then build it with our own project management.
- Guide price in Derry/LondonderryFrom £3,400 inc VAT
- PlanningSmall porches often permitted development
- Build time2–4 weeks on site
- Postcode districtsBT48
Porch extension prices in Derry/Londonderry
Prices below are for Derry/Londonderry, using the Northern Ireland factor of ×0.86. They are guide ranges including VAT for the build only, not a quote.
| Option | What it covers | Guide price |
|---|---|---|
| Essential | Small brick or glazed porch, up to 3 m² | £3,400 – £5,600 |
| Standard | Brick porch with tiled roof and composite door | £5,150 – £8,200 |
| Premium | Larger porch with WC or oak frame and premium glazing | £7,700 – £12,900 |
Want a range for your exact size? The guide-price tool takes about a minute.
Included in a typical project
- Tiled, slate or flat roof
- Foundations and drainage for rainwater
- Front door, glazing and electrics
- Brick, render or oak frame walls
- Planning check against the porch limits
Extensions in and around Derry/Londonderry
Across BT48, we can visit, measure and advise. Nearby, we also take on projects in Limavady (15 miles), Coleraine (27 miles), Magherafelt (31 miles).
For homes towards County Tyrone, Strabane is around 13 miles away. In Northern Ireland, extension projects follow the NI planning rules and council building control, which we account for from the first survey.
Will the council need to approve it?
In Northern Ireland a small porch is usually permitted development within limits on floor area, height and distance from a road; larger porches need planning permission from the council, and building control rules still apply.
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.
Building close to a public sewer needs the agreement of NI Water, which we check during design.
Applications are decided by your council, which handles local planning in Northern Ireland.
Our process, step by step
Site visits are free and there is no obligation. Where drawings are needed, the design stage is priced in writing before it starts.
Free site visit
First, a site visit: we look at the house, garden, access and drains and listen to what you need.
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
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 people ask about porch extensions
Who do I contract with for a porch extension in Derry/Londonderry?
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.
How long does a porch extension take to build in Derry/Londonderry?
On site, typically 2 to 4 weeks once approvals are in place. Before that, allow 2–8 weeks design and approvals.
Do I need building regulations approval in Derry/Londonderry?
Yes. Almost every extension needs it, whatever the planning route. We prepare the drawings and book the inspections.
How much does a porch cost?
Our guide range is about £3,400 to £12,900 including VAT, depending on size, materials and whether it includes a WC.
Book a free site visit in Derry/Londonderry
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.