Where fees for permits are determined on the basis of the cost of work to be done, an initial cost estimate of such work shall be submitted by the applicant on the permit application. The Chief Building Official may require the applicant to substantiate the initial cost estimate with such evidence, information or records as may be necessary to reasonably and accurately establish such valuation. In the absence of substantiation which is reasonably acceptable to the Chief Building Official, he or she shall determine, compute or estimate such valuation in accordance with generally accepted methods of estimating and may, for such purpose, refer to other valuations submitted for comparable work involved.
(1966 Code § 1303.02)