The Board of Playground and Recreation Commissioners shall make an investigation of the plans and the location of the proposed or existing structure to determine whether the same will interfere or is interfering with any of the rights of the public. After an investigation and report by the Board there shall be a hearing upon the application. Notice of the hearing of the application, giving the time of and place at which the hearing is to be held, shall be mailed to the applicant at his place of residence as contained in the application, at least ten days prior to the date of the hearing.