All applications for building permits shall be accompanied by plans in duplicate or by electronic copy, drawn to scale, showing the actual dimensions and shape of the lot to be built upon; the exact sizes and locations on the lot of buildings already existing, if any; and the location and dimensions of the proposed building or alteration. The application shall include such other information as lawfully may be required by the administrative official, including existing or proposed building or alteration; existing or proposed uses of the building and land; the number of families, housekeeping units, or rental units the building is designed to accommodate; conditions existing on the lot; and such other matters as may be necessary to determine conformance with, and provide for, the enforcement of these zoning regulations. The administrative official shall have 14 days, excluding legal holidays, in which to accept or reject an application for building permits after the same has been submitted in proper form.