It is unlawful for any person to do any of the following unless he or she has a valid permit issued by the enforcement agency:

any lot in a park that has been constructed, reconstructed, or altered without having obtained a permit as required herein.

This section shall not apply to any employee housing having a valid annual permit to operate.

Applications for a permit to construct or reconstruct shall be accompanied by:

fees.

All permits as required by this chapter for construction or reconstruction shall automatically expire within six months from the date of issuance thereof in those cases where the construction or reconstruction has not been completed within that period. However, the enforcement agency may extend the expiration date of the permit for a reasonable time.

If any person who holds a permit to operate violates the permit or this part, the permit may be suspended by the enforcement agency. This section does not, however, authorize the suspension of a permit of any park existing on September 15, 1961, for any violation of this part directly or indirectly that was not a violation of the law that this part supersedes.

The enforcement agency shall issue and serve upon the permittee a notice setting forth in what respect the provisions of the permit or this code have been violated, and shall notify them that unless these provisions have been complied with within 60 days after the date of notice, the permit shall be subject to suspension.

The notice shall be served by posting at least one copy in a conspicuous place on the premises described in the permit, and by sending another copy by registered mail, postage prepaid, return receipt requested, to the person to whom the permit was issued at the address therein given.

Any permittee receiving a notice issued pursuant to Section 18870.12 may request and shall be granted a hearing on the matter before an authorized representative of the enforcement agency. The permittee shall file with the enforcement agency a written petition requesting the hearing and setting forth a brief statement of the grounds therefor within 10 days of the date of mailing of the notice.

Upon receipt of the petition, the enforcement agency shall set a time and place for the hearing and shall give the petitioner written notice thereof. At the hearing the petitioner shall be given an opportunity to be heard and to show cause, if any, why the notice should be modified or withdrawn.

The hearing shall be commenced not later than 10 days after the day on which such petition was filed. Upon application of the petitioner the enforcement agency may, however, postpone the date of the hearing for a reasonable time beyond the 10-day period, if in its judgment the petitioner has submitted a good and sufficient reason for the postponement.

After the hearing the enforcement agency shall sustain, modify, or withdraw the notice, depending upon its findings as to whether the provisions of this part have been complied with.

If the requirements of the notice have not been complied with on or before the expiration of 30 days after the mailing and posting of the notice, the enforcement agency may suspend the permit.

Upon compliance by the permittee with the provisions of this part and of the notice, and submission of proof thereof to the enforcement agency, the enforcement agency shall reinstate the permit or issue a new permit.