[R.O. 1993 § 520.170; CC 1969 § 21-18]
No plumbing work, unless excepted in this Article, shall be undertaken prior to the issuance of a permit therefor by the Administrative Authority. A permit shall be issued only to a licensed plumber, except that any permit required by the Plumbing Code may be issued to any person to do any work regulated by this Chapter in a single-family dwelling used exclusively for living purposes, including the usually accessory buildings and quarters in connection with such building, when such person is the bona fide owner of such dwelling and the dwelling will be occupied by him/her and he/she shall personally purchase all material and perform all labor in connection therewith.