Porch extensions in Lisburn
From the first sketch to final sign-off, we plan and build porch extensions in Lisburn and the surrounding County Antrim area.
- Guide price in LisburnFrom £3,400 inc VAT
- PlanningSmall porches often permitted development
- Build time2–4 weeks on site
- Postcode districtsBT10, BT11, BT17, BT27, BT28
Included in a typical project
- Tiled, slate or flat roof
- Foundations and drainage for rainwater
- Planning check against the porch limits
- Front door, glazing and electrics
Proportion matters on a porch more than on any other extension, because it is at the front. We match the roof pitch and brick and keep the front door in proportion with the house windows.
Local to Lisburn
Postcode districts we cover around Lisburn include BT10, BT11, BT17, BT27, BT28. We also work in nearby Belfast (7 miles), Castlereagh (7 miles), Newtownabbey (11 miles), Antrim (15 miles).
For homes towards County Down, Newtownards is around 15 miles away. 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.
Do I need planning permission in Lisburn?
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.
The planning position for a specific Lisburn address depends on its history and any designations, which is why we check it at the first visit.
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.
How much does a porch extension cost in Lisburn?
These guide figures apply our Northern Ireland adjustment (×0.86) to national rates. They include VAT at 20% and cover the build itself; design and council fees are listed separately.
| 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 |
For a figure based on your own dimensions, use our guide-price tool.
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
We visit your Lisburn home, measure up, talk through what you want and check the planning position.
Design and approvals
We produce the drawings and structural design, and manage the approvals so they are in place before work starts.
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
How long does a porch extension take to build in Lisburn?
On site, typically 2 to 4 weeks once approvals are in place. Before that, allow 2–8 weeks design and approvals.
Do you cover all of Lisburn?
Yes. We cover Lisburn and the surrounding parts of County Antrim. Site visits are free and there is no obligation.
Do I need building regulations approval in Lisburn?
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 Lisburn
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.