Orangery extensions in Derry/Londonderry
Derry/Londonderry homeowners can use us for the whole orangery extension project: survey, design, planning or permitted development checks, building regulations and the build itself.
- Guide price in Derry/LondonderryFrom £25,500 inc VAT
- PlanningNI permitted development (rear 3–4 m) or planning
- Build time10–16 weeks on site
- Postcode districtsBT48
Working in Derry/Londonderry
Site visits are available across Derry/Londonderry (BT48). We also work in nearby Limavady (15 miles), Coleraine (27 miles), Magherafelt (31 miles).
Strabane, in County Tyrone, is roughly 13 miles from Derry/Londonderry and also on our list. In Northern Ireland, extension projects follow the NI planning rules and council building control, which we account for from the first survey.
What we take care of
- Design of piers, roof perimeter and lantern proportions
- Thermal calculations where glazing is generous
- Foundations, walls and insulated perimeter roof
- Heating sized for the glass area
- Opening into the main house
- Aluminium or timber lantern and full-height glazing
Planning rules that apply in Derry/Londonderry
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.
The planning position for a specific Derry/Londonderry 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.
Orangery extension prices in Derry/Londonderry
For Derry/Londonderry 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.
Typical rates in Derry/Londonderry: £2,060 to £3,870 per m² including VAT, depending on specification.
| Size | Essential | Standard | Premium |
|---|---|---|---|
| 3 m × 4 m 12 m² | £25,500 – £31,500 | £28,500 – £36,500 | £35,000 – £46,500 |
| 4 m × 4 m 16 m² | £33,000 – £40,000 | £38,500 – £48,500 | £46,500 – £62,000 |
| 4 m × 6 m 24 m² | £49,500 – £60,000 | £57,500 – £72,500 | £70,000 – £93,000 |
For a figure based on your own dimensions, use our guide-price tool.
What happens next
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
A designer visits, takes measurements and photos, and discusses layouts, budget and timing with you.
Design and approvals
Drawings are prepared and agreed with you, then submitted for the right planning route and building regulations approval.
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
Our team builds the extension, keeps you updated weekly and finishes with building control sign-off.
Your questions about an orangery extension in Derry/Londonderry
Will my neighbours in Derry/Londonderry be involved?
If a planning application is needed, the council notifies neighbours. Where work is close to a shared boundary, we agree access and protection with them in writing.
Do you cover all of Derry/Londonderry?
Yes. We cover Derry/Londonderry and the surrounding parts of County Londonderry. Site visits are free and there is no obligation.
How long does an orangery extension take to build in Derry/Londonderry?
On site, typically 10 to 16 weeks once approvals are in place. Before that, allow 6–12 weeks design and approvals.
How much does an orangery cost?
Our guide range is about £2,060 to £3,870 per m² including VAT, so a 16 m² standard-spec orangery is typically £38,500 to £48,500 in Derry/Londonderry.
Will an orangery be too hot in summer?
Not if it is designed with solar-control glass, a solid perimeter and ventilation. We size the lantern and opening vents with that in mind.
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.