Larne porch extensions, designed and built
Thinking about a porch extension for your Larne home? Start with a free site visit: we measure up, check what the council will allow and give you honest guide figures on the day.
- Guide price in LarneFrom £3,400 inc VAT
- PlanningSmall porches often permitted development
- Build time2–4 weeks on site
- Postcode districtsBT40
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.
Homes in conservation areas, areas of townscape character and listed buildings have tighter rules, so we always check the property's status and planning history before design starts.
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.
How much does a porch extension cost in Larne?
For Larne we adjust our national guide rates by ×0.86, the factor we use for Northern Ireland. Figures include VAT; your written quote after the survey replaces them.
| 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 |
Try the guide-price tool to see a range for your own size and finish.
Who a porch extension suits
- Homes wanting better kerb appeal
- Front doors that open straight into a living room
- Busy hallways with no storage
Extensions in and around Larne
Site visits are available across Larne (BT40). Nearby, we also take on projects in Carrickfergus (9 miles), Newtownabbey (14 miles), Belfast (18 miles), Antrim (18 miles).
For homes towards County Down, Bangor, County Down is around 14 miles away. In Northern Ireland, extension projects follow the NI planning rules and council building control, which we account for from the first survey.
From first visit to completion
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
It starts with a visit to your house to measure, check access and talk through ideas and budget.
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
Our team builds the extension, keeps you updated weekly and finishes with building control sign-off.
Porch extension questions answered
Can I see a price before committing to anything?
Yes. The guide prices on this page are adjusted for Larne, and the guide-price tool gives a range for your own size. After the survey you get a written price before anything is agreed.
Do I need building regulations approval in Larne?
Yes. Almost every extension needs it, whatever the planning route. We prepare the drawings and book the inspections.
How long does a porch extension take to build in Larne?
On site, typically 2 to 4 weeks once approvals are in place. Before that, allow 2–8 weeks design and approvals.
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 Larne
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.