Quantity surveyors and cost engineers provide advice to the construction industry on the financial and legal aspects of new constructions, and operation of existing buildings. They are involved in the construction process from the feasibility stage to post-completion, and they manage and administer construction costs and contracts for a variety of levels and types of construction. Tasks may include preparing cost plans and estimates, bills of quantities, tender appraisals, valuations, project audits, property taxation and life cycle cost advice.