Permit fees shall be calculated on a charge of four (4) per cent of the total dollar
amount of work accomplished by the applicant as verified by correct copies of the
contract documents to be filed with the permit application. The initial permit fee
shall be based upon the estimated dollar amount of work to be accomplished and shall
be adjusted to correspond to four (4) per cent of the actual dollar amount of work
accomplished, based upon receipt of a correct copy of the final payment to the permitted
filed with the director of public works, prior to the written acceptance of any work
covered under the conditions of the permit.