The assessor shall take charge of the assessor's office, and shall:

• Ensure that all laws and policies governing the appraisal and assessment of real properties for taxation purposes are properly executed;
• Initiate, review, and recommend changes in policies and objectives, plans and programs, techniques, procedures and practices in the valuation and assessment of real properties for taxation purposes;
• Establish a systematic method of real property assessment;
• Install and maintain a real property identification and accounting system,
• Prepare, install and maintain a system of tax mapping, showing graphically all property subject to assessment and gather all data concerning the same;
• Conduct frequent physical surveys to verify and determine whether all real properties within the province are properly listed in the assessment rolls;
• Exercise the functions of appraisal and assessment primarily for taxation purposes of all real properties in the local government unit concerned;
• Prepare a schedule of the fair market value for the different classes of real properties,
• Issue, upon request of any interested party, certified copies of assessment records of real property and all other records relative to its assessment, upon payment of a service charge or fee to the treasurer;
• Submit every semester a report of all assessments, as well as cancellations and modifications of assessments to the local chief executive and the sanggunian concerned;
• In the case of the assessor of a component city or municipality attend, personally or through an authorized representative, all sessions of the local board of assessment appeals whenever his assessment is the subject of the appeal, and present or submit any information or record in his possession as may be required by the board; and,
• Exercise such other powers and perform such other duties and functions as may be prescribed by law or ordinance.