The enforcing agency shall examine each application for a construction
permit. If the application conforms with the Act, the code and the
requirements of other applicable laws and ordinances, it shall be
deemed a completed application, and the enforcing agency shall approve
the application and shall issue a construction permit to the applicant.
Every completed application for a construction permit shall be granted,
in whole or in part, or denied within 20 business days. If a completed
application is denied, in whole or in part, the enforcing agency shall
set forth the reasons therefor in writing. If an enforcing agency
fails to grant, in whole or in part, or deny a completed application
for a construction permit within the period of time prescribed herein,
such failure shall be deemed a denial of the application for purposes
of an appeal to the Construction Board of Appeals, unless such period
of time has been extended with the consent of the applicant. The enforcing
agency may approve changes in plans and specifications previously
approved by it, if the plans and specifications when so changed remain
in conformity with law.