What Does a Conservatory Cost in the UK?
A conservatory adds usable living space and can be a cost-effective alternative to a traditional extension. A basic lean-to conservatory in uPVC costs around £8,000 to £14,000 installed. A larger Victorian or Edwardian style runs £15,000 to £30,000. An orangery — closer to a traditional extension with more solid structure — starts at around £25,000 and can exceed £60,000 for larger premium versions.
Costs by Type
- Lean-to (uPVC, medium size): £8,000 to £14,000
- Edwardian (uPVC, medium): £14,000 to £22,000
- Victorian (uPVC, medium): £15,000 to £25,000
- P-shaped: £20,000 to £35,000
- Orangery (medium): £25,000 to £50,000
Roof Type Matters
- Polycarbonate — cheapest, but very poor insulation — extremely hot in summer, cold in winter
- Glass roof — better thermally and aesthetically; adds £2,000 to £5,000 over polycarbonate
- Solid or tiled roof — best insulation; makes the room usable year-round; adds £5,000 to £15,000
If you want a room that's genuinely comfortable in all seasons, a solid or tiled roof is worth the investment.
Planning Permission
Most conservatories are covered by Permitted Development rights, so planning permission isn't required, subject to size and position conditions. Building Regulations approval is needed if the conservatory will be used as a habitable room or has a solid roof. Conservation areas and listed buildings have additional restrictions — always check with your local planning authority first.
Additional Costs to Budget For
- Base preparation: £500 to £2,000
- Bi-fold or sliding doors: £3,000 to £8,000
- Underfloor heating or radiator: £1,500 to £3,000
- Electrics (sockets, lighting): £500 to £1,500
Finding a Reliable Conservatory Company
Check for GGF and FENSA registration. Ask to visit a completed installation and speak to that homeowner directly. Get at least three quotes and never sign on the first visit — legitimate companies hold their prices.