Estimates are based on typical 2026 UK installed prices: lean-to £8,500–£15,000, Victorian £12,000–£17,500, Edwardian £12,000–£20,000 and orangery £25,000–£35,000, adjusted for size and frame material (aluminium and timber cost more than uPVC). High-spec glass rooms can exceed these figures. See our full conservatory cost guide and check whether you need planning permission.