Conservatory vs Orangery vs Extension: Which Is Right?
Three options for adding a room at the back of your house, each with different costs, comfort levels, and resale value. This guide compares them honestly.
The details
Definitions
Conservatory: 75%+ glazed roof and walls. Orangery: solid walls with large windows and a flat roof with glazed lantern. Extension: solid brick/block construction with standard windows. Each has different Building Regulations implications and comfort characteristics.
Year-round comfort
Conservatories are the worst for year-round use — too hot in summer, too cold in winter. Orangeries are significantly better (solid walls provide insulation). Extensions are the most comfortable (full insulation, same as the rest of the house).
| Factor | Conservatory | Orangery | Extension |
|---|---|---|---|
| Cost | £10,000–£25,000 | £30,000–£55,000 | £36,000–£56,000 |
| Year-round comfort | Poor | Good | Excellent |
| Planning needed? | Usually PD | Usually PD | Usually PD |
| Building Regs? | Maybe exempt* | Yes | Yes |
| Resale value added | 3–5% | 5–8% | 5–10% |
| Build time | 2–4 weeks | 8–14 weeks | 10–16 weeks |
Our verdict
If budget is tight and you want a summer room, a conservatory works. For year-round living at a moderate cost, an orangery is the sweet spot. For maximum comfort, value, and usability, a brick extension is the best investment.
Common questions
Frequently asked questions
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