Any building used in the commission of offenses prohibited by Sections 9-1, 10-1, 10-2, 11-14, 11-15, 11-16, 11-17, 11-20, 11-20.1, 11-20.1B, 11-20.3, 11-21, 11-22, 12-5.1, 16-1, 20-2, 23-1, 23-1(a)(1), 24-1(a)(7), 24-3, 28-1, 28-3, 31-5 or 39A-1, or subdivision (a)(1), (a)(2)(A), or (a)(2)(B) of Section 11-14.3, of this Code, or prohibited by the Illinois Controlled Substances Act, the Methamphetamine Control and Community Protection Act, or the Cannabis Control Act, or used in the commission of an inchoate offense relative to any of the aforesaid principal offenses, or any real property erected, established, maintained, owned, leased, or used by a streetgang for the purpose of conducting streetgang related activity as defined in § 10 of the Illinois Streetgang Terrorism Omnibus Prevention Act is a public nuisance.
     (b) Sentence. A person convicted of knowingly maintaining such a public nuisance commits a Class A misdemeanor. Each subsequent offense under this Section is a Class 4 felony.