Before work is commenced on the construction or erection of a private or residential swimming pool or on any alterations, additions, remodeling or other improvements, an application for a swimming pool building permit to construct, erect, alter, remodel, or add must be submitted, in writing, to the Building Inspector. Plans and specifications and pertinent explanatory data should be submitted to the Building Inspector at the time of application. No work or any part of the work shall be commenced until a written permit for such work is obtained by the applicant. A building permit fee shall accompany such application.