Conservatory replacement extensions in Larne
Thinking about a conservatory replacement 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 £17,000 inc VAT
- PlanningNI permitted development (rear 3–4 m) or planning
- Build time8–14 weeks on site
- Postcode districtsBT40
Planning and approvals in Larne
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.
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.
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.
What should I budget for a conservatory replacement in Larne?
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.
Typical rates in Larne: £1,590 to £3,010 per m² including VAT, depending on specification.
| Size | Essential | Standard | Premium |
|---|---|---|---|
| 3 m × 3.3 m 10 m² | £17,000 – £20,500 | £18,000 – £24,000 | £23,500 – £30,500 |
| 3.5 m × 4 m 14 m² | £22,000 – £26,500 | £25,500 – £33,500 | £33,000 – £42,500 |
| 4 m × 5 m 20 m² | £31,500 – £38,000 | £36,500 – £47,500 | £47,000 – £60,500 |
Includes removal of the old conservatory. Reusing existing foundations is only possible after investigation.
Try the guide-price tool to see a range for your own size and finish.
Covering Larne
Our survey diary covers Larne, including BT40. We also work in nearby 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. 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.
Included in a typical project
- Removal and disposal of the old conservatory
- Opening widened into the house if wanted
- Trial holes to check the existing foundations
- New or upgraded foundations
How the project works
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
The price is fixed in writing once the design is settled, with a clear programme and payment stages.
Build and sign-off
The build is managed from start to finish, inspected at each stage and signed off on completion.
Your questions about a conservatory replacement in Larne
How long does a conservatory replacement take to build in Larne?
On site, typically 8 to 14 weeks once approvals are in place. Before that, allow 4–12 weeks design and approvals.
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 you cover all of Larne?
Yes. We cover Larne and the surrounding parts of County Antrim. Site visits are free and there is no obligation.
Is it worth replacing a conservatory with an extension?
If the conservatory is unusable for much of the year, usually yes. A solid extension gives a heated room that counts as proper living space. Our guide range is about £1,590 to £3,010 per m² including VAT, including removal.
Does replacing a conservatory need planning permission?
A solid replacement is treated as a new extension, so it must meet the permitted development limits or get planning permission, and it always needs building regulations approval.
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.