Abstract: An adjustable manhole/catch basin structure includes a mounting base, adjustable tube, and protection sleeve. The mounting base includes a mounting flange and an externally threaded tube which extends upward from the mounting flange. A plurality of mortar openings are formed through the mounting flange. The protection sleeve is mounted concentric with the externally threaded tube. The adjustable tube is internally threaded such that it may be threaded on to the externally threaded tube. The inner diameter of the protection sleeve is large enough to provide clearance for the outer diameter of the adjustment tube. Three notches are preferably formed in a top of the adjustment tube to allow an adjustment tool to rotate thereof to the desired height. The adjustment tool includes a body, three arms and a torque lever.