The provisions of this article shall be administered and enforced by the building official of the city. All applications for building permits shall be accompanied by a plat in duplicate, drawn to scale, showing the actual dimensions of the lot to be built upon, the size of the building to be erected, the use of the property, and such other information as may be necessary to provide for the enforcement of these regulations. A careful record of such applications and plats shall be kept in the office of the building official.