物業估價主任主要負責測量和調查房地產物業，包括擬備圖則和報告，以及收集和整理與房地產物業有關的資料，作評估差餉、地租和其他用途；協助進行物業估價作評估差餉、地租和其他用途、協助處理有關租用和購置寫字樓和宿舍作政府用途、協助處理物業管理的事宜，以及協助執行《業主與租客（綜合）條例》的規定；解答市民查詢，協助處理往來書信，以及管理部門和估價記錄；協助訓練初級技術人員；及執行其他與上述事宜相關的職務。（註：物業估價主任需擔任戶外及辦公室工作。）

A Valuation Officer is mainly deployed on surveying and referencing landed properties which include the preparation of plans and reports, collecting and collating information relating to landed properties for rating, Government rent and other purposes; assisting in the valuation of properties for rating, Government rent and other purposes, in the leasing and purchasing of offices and quarters for Government use, in property management work and in the administration of the Landlord and Tenant (Consolidation) Ordinance; answering public enquiries, assisting in handling correspondence, and maintaining office and valuation records; assisting in the training of junior technical staff; and such other duties related to the above as required. (Note : A Valuation Officer is required to work both outdoor and in office.)