53 Pa. Stat. § 14943
No cellar or cellar-room shall be used for living purposes. No basement room in any building of the grades referred to in this act shall be used for living purposes, other than laundry, the finished ceiling of which is less than seven feet above the finished floor level, and the walls of which are not damp-proof and water-proof. Such rooms shall have a window area equal to that required in section twelve, and shall not be used for sleeping purposes, unless along the side containing the window there is an open area, of not less than six inches, below the level of the window sill, and extending upward to the surface of the street, which area shall be satisfactorily drained. The tenant of a cellar-room or basement not conforming to the above requirements shall be subject to the penalties hereinafter provided for violations of this act, and the chief of the division shall thereupon notify the agent or owner, and the lessor if he be not the owner, that such tenancy shall be terminated.
53 P.S. § 14943