Where work for which a permit is required by this chapter is started or proceeded with prior to the obtaining of such permit, the fees prescribed in Section 19132.3 shall be doubled. The payment of such double fee does not relieve any person from fully complying with the requirements of this chapter in the execution of the work.
Source:
Section 19132.5, https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=HSC§ionNum=19132.5..