Any person who shall commence any installation or work for which a permit is required by this Building Code, without first having obtained a permit therefor shall, if legally authorized and subsequently allowed to obtain a permit, pay double the permit fees prescribed, however this requirement shall not apply to emergency work or installations as provided by § 150.039 when it shall be proved to the satisfaction of the Chief Building Official that such work or installation was urgently necessary and that it would have been impractical to have waited the normal time consumed in application for and issuance of the permit. Nevertheless, even in such emergencies the required permit shall be obtained without unreasonable delay after installation starts, and in no case more than three days in which the office of the Chief Building Official is open for business, or the extra fee as herein provided shall be charged for the permit. Before issuing such permit, the Chief Building Official shall take necessary steps to determine whether work performed prior to the date of permit and inspection conform to this Building Code. Such steps may include but shall not be limited to directing the tearing out of sections of surface work for access to subsurface sections, digging for access to foundations, piping and other subterranean work and the like. The applicant for the permit shall perform all such work as may be directed at his own expense.
(‘74 Code, § 150.25)