UK conservatory calculator
Conservatory Cost Calculator
Model lean-to, Victorian, Edwardian and higher-spec conservatory budgets using current 2026 UK benchmark examples.
Enter a postcode to set the cost region automatically.
Estimated conservatory budget
£8,903 – £17,806Typical planning estimate £13,354. The model is anchored to current 3.5m × 3.5m UK examples (£9,000 lean-to and about £13,500 Victorian); size, style, specification and regional factors are planning assumptions.
Benchmark source: Checkatrade conservatory cost guide, June 2026. Size, style and regional factors are planning assumptions rather than quoted market averages. See sources →