1. How much does a conservatory cost in the UK in 2026?
Costs depend heavily on type, size, and material. A basic lean-to UPVC conservatory starts from £5,000-£10,000. A mid-range Victorian or Edwardian style conservatory costs £15,000-£25,000. An orangery costs £25,000-£40,000 mid-range and £40,000-£80,000+ premium. A fully insulated garden room costs £20,000-£35,000 mid-range. These prices include design, groundworks, construction, and basic electrics. Add £2,000-£5,000 for heating systems, £1,000-£3,000 for flooring, and £500-£2,000 for blinds. The biggest price differentiator is the roof type: polycarbonate is cheapest but least comfortable, glass offers brightness with moderate insulation, and solid insulated roofs provide the best year-round performance. Get quotes from verified specialists on HouseJester.
2. What is the best type of conservatory roof?
Polycarbonate roofs are the most affordable but offer poor insulation (hot in summer, cold in winter) and can be noisy in rain. Glass roofs (double or triple glazed with solar control coatings) provide excellent light transmission with much better thermal performance — choose self-cleaning, solar-reflective glass for optimal performance. Solid insulated roofs (lightweight tiled systems like Guardian or Supalite) offer the best thermal performance and make the space feel like a proper room rather than a conservatory, but reduce natural light. A combination roof (solid perimeter with a central glass lantern) is the orangery approach, offering an excellent balance of light and thermal performance. For year-round comfort, glass with solar control or solid-with-lantern are the best options.
3. Do conservatories need Building Regulations approval?
A conservatory is exempt from Building Regulations if: the floor area is less than 30m², the conservatory is at ground level, there is a wall, door, or window separating it from the house, the glazing and electrics comply with relevant regulations, and independent heating has its own controls. If you remove the separating wall or doors between the conservatory and the house, the space becomes an extension and must comply with Building Regulations (Part L for energy efficiency, Part A for structure, etc.). An orangery or garden room with a solid roof is more likely to be treated as an extension and may require Building Regulations approval from the outset.
4. How long does it take to build a conservatory?
A standard UPVC conservatory takes 3-5 weeks from start of groundworks to completion. An orangery or garden room, with more substantial brickwork and structural elements, takes 6-10 weeks. Before construction begins, allow 2-4 weeks for design and planning, 4-8 weeks for manufacturing (if bespoke), and potentially 8-12 weeks if planning permission is required. The construction sequence is: excavation and foundations (3-5 days), base and damp-proof course (2-3 days), walls and frame (3-7 days), roof installation (2-3 days), glazing (1-2 days), electrics and heating (2-3 days), and internal finishing (2-5 days). Weather can affect the schedule, particularly the groundworks and roofing stages.
5. Can I use a conservatory as a kitchen or bedroom?
A conservatory can be used as a kitchen or dining extension, and this is increasingly popular. However, if you connect it to the main house by removing the separating wall, it must comply with Building Regulations as an extension — including structural calculations, drainage for kitchen facilities, adequate ventilation, and energy efficiency requirements. Using a conservatory as a bedroom is possible but the room must be comfortable year-round (adequate heating and insulation) and have a suitable means of escape in case of fire. For a fully integrated kitchen-diner, an orangery or insulated garden room is the most practical option.
6. How do I prevent my conservatory from overheating in summer?
Solar control glass (reflecting a percentage of solar radiation while maintaining light transmission) is the most effective solution for new builds. For existing conservatories: roof blinds (manual or motorised) reduce solar gain significantly — pleated blinds and cellular blinds are particularly effective. External shading (a retractable awning over the roof) blocks heat before it enters the glass, which is more effective than internal blinds. Roof vents and opening windows allow hot air to escape — hot air rises, so roof-level ventilation is essential. Air conditioning (a split system providing both heating and cooling) is the most comprehensive solution, costing £1,500-£3,000 installed.
7. What heating options work best for a conservatory?
The best option depends on the conservatory's thermal performance. For well-insulated structures (solid roof or high-performance glass): extend your central heating with additional radiators — this is the most cost-effective and consistent solution. For standard glazed conservatories: underfloor heating provides comfortable, invisible warmth and works well with the tile or stone flooring common in conservatories. Electric radiators are the easiest to install (no plumbing) but cost more to run. A split air-conditioning system provides both heating and cooling, making it ideal for conservatories that overheat in summer and are cold in winter — costs £1,500-£3,000 installed.
8. Can I replace my old conservatory roof with a solid roof?
Yes, and this is one of the most popular conservatory upgrades in the UK. Lightweight solid roof systems (such as Guardian Warm Roof and Supalite) are specifically designed to retrofit onto existing conservatory frames, replacing polycarbonate or old glass roofs with a fully insulated, tiled roof. The process takes 5-8 days and does not require the conservatory to be demolished or the frame to be replaced. Costs range from £3,000-£8,000 depending on the conservatory size. The transformation is dramatic — the space becomes warmer in winter, cooler in summer, and quieter in rain. Note that this upgrade may bring the space under Building Regulations if the thermal separation from the main house is affected.
9. What is the difference between UPVC and aluminium for a conservatory?
UPVC is the most popular and affordable material for UK conservatories. It is low-maintenance, thermally efficient, and available in various colours and woodgrain finishes. Frame profiles are typically 60-70mm wide. Aluminium is stronger, allowing slimmer frame profiles (35-45mm), which means larger glass areas and a more contemporary aesthetic. It is more durable (40+ year lifespan vs 20-30 for UPVC), inherently weather-resistant, and available in any RAL colour. However, aluminium costs 40-80% more than equivalent UPVC. For traditional-style conservatories, UPVC is the practical choice. For contemporary designs, orangeries, and situations demanding large glass panels, aluminium is superior.
10. How does the Future Homes Standard affect conservatories?
The Future Homes Standard primarily affects new-build homes and extensions. For conservatories built as exempt structures (glazed roof, separating wall from the house), the Standard has limited direct impact. However, if a conservatory is classified as an extension (solid roof, no separating wall), it must meet the Standard's energy efficiency requirements — including minimum U-values for roof, walls, and glazing. The broader impact is cultural: homeowners increasingly expect year-round comfort and energy efficiency from any addition to their home. This is driving demand for orangeries and insulated garden rooms over traditional conservatories. Solar control glass, insulated roof systems, and efficient heating are becoming standard rather than optional specifications.
This article was created with AI assistance and reviewed by the HouseJester editorial team for accuracy and relevance.