助理屋宇保養主任的主要職責是： (a) 協助工程監督監督工程顧問的表現及監察承建商的工程質素； (b) 巡查工地以確保小規模工程合乎標準完成； (c) 監察工程進度及核對工地上的工程； (d) 協助工程監督監察項目質素、審核及統籌複雜的工程項目； (e) 審查工程顧問及承建商的小規模維修工程計劃及預算 ；以及 (f) 統籌小規模工程項目及與有關工程顧問、承建商及學校聯絡。

Assistant Maintenance Officers are mainly deployed to : (a) assist in monitoring the overall performance of consultants and the quality control of works done by work contractors taking charge of projects; (b) conduct audit checking on site to ensure the site works are completed to the required standards for projects of minor scope in nature; (c) check work progress and verify work done on site; (d) assist in the quality control, audit checking and coordination of more complicated projects; (e) check repair proposals and estimates prepared by consultants for projects of minor scope in nature; and (f) coordinate and liaise with consultants, works contractors and schools for projects of minor scope in nature.