A blocking apparatus is disclosed for selectively blocking movement of a deadbolt actuation lever on a door. The apparatus includes a base mounting plate for mounting on the door, the base mounting plate including an engaging portion for positioning against the inside surface of the door and a deadbolt receiving portion for positioning against the edge surface of the door. The apparatus also includes a mounting shaft mounted on and extending from the engaging portion and a blocking member mounted on the mounting shaft and movable between a block position and an unblocked position. The block position is characterized by the blocking member blocking movement of the deadbolt actuation lever from the locked orientation to the unlocked orientation. The unblocked position of the blocking member is characterized by the deadbolt actuation lever being free to move without interference by the blocking member.