This chapter does not legalize any current illegal use, unless the use is a conforming use for that district. A use that was permitted by right or was a nonconforming use under previous regulations, or was established lawfully prior to the adoption of this chapter is deemed a nonconforming use. A use that was not lawfully established is an illegal use.

This chapter does not discharge or otherwise affect the prosecution of any prior offense, or the imposition of any liability, penalty or forfeiture, either civil or criminal. Prosecutions and suits for any offenses, liabilities, penalties or forfeitures may be instituted or causes presently pending may proceed as if this chapter had not been passed.

This chapter is not intended to abrogate or annul any permit issued by the city before the effective date of this chapter. Nothing in this chapter nor in any amendments to this chapter which change district boundaries shall require any change in the plans, construction or designated use of a building that is completed in its entirety within two years from May 5, 2016 (the effective date of this chapter), provided such building was authorized by a permit issued by the city prior to May 5, 2016 (the effective date).