Does an orangery need Building Regs?
Usually yes. An orangery has a mostly solid roof and masonry pillars, so it generally does not qualify for the conservatory exemption and needs Building Regulations approval for structure, insulation and ventilation. Building control looks at how much of the walls and roof is actually glazed.
What is the conservatory exemption?
A conservatory is exempt if it is at ground level, under 30 m², meets Part K glazing safety rules, is separated from the house, and has its own heating. English guidance gives no fixed glazing percentage, so building control decides case by case.
Why does an orangery fall outside it?
The solid roof perimeter, masonry and insulated build-up make it closer to an extension. It then needs to meet the energy rules in Approved Document L, including the limit on glazing area (25 percent of the floor area) and the 2.2 W/m²K limit for the roof lantern.
What approvals are usually needed?
- A building notice or full plans application
- Foundation and structure checks
- Insulation to Part L standards
- Planning permission only if permitted development limits are exceeded
Order from the trade counter at Unit 1, Friar Walk, Worthing, with free delivery within 30 miles. See the orangery roof lanterns range for specs.
Need a trade price? Call the trade counter on 01903 262 636 or visit us at Unit 1, Friar Walk, Worthing. We offer free delivery within 30 miles.
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