The DC building permit fee below uses the DC Department of Buildings' actual published formula - not a guess. The other agencies only apply if your project touches them, so check what's real for your scope.
DOB's figure uses their published formula exactly, for the alteration/repair tier - new construction is priced differently, by cubic foot. Every other line is a typical range, not a quote - actual fees depend on your specific project, and DOEE and DC Water in particular depend on details this slider can't see. Confirm the real numbers with each agency, or during the on-site visit.