UK garden room calculator
Garden Room Cost Calculator
Estimate mini garden rooms, insulated office pods and high-spec cabins with postcode-aware regional pricing.
Enter a postcode to apply a regional adjustment.
Estimated garden room cost
£3,890 – £20,600Typical planning estimate £12,045. Plumbing, premium glazing and bespoke landscaping can add more.
Benchmark source: Checkatrade 2026 garden room cost guide. Regional and add-on adjustments are UK Home Costs modelling assumptions. See sources →