Essentiality of permit Unless otherwise specifically mentioned in these rules,-
(1) No person shall develop or re-develop any parcel of land without first obtaining a development permit for each such development or re-development from the Secretary;
(2) No person shall erect or re-erect a building or make alterations to any building or cause the same to be done without first obtaining a separate building permit for each such building from the Secretary;
(3) No person shall change the occupancy of an existing building from one group to another, without first obtaining the permit from the Secretary.