The HSTPA, effective June 14, 2019, was a watershed event in New York City rent regulation. Among its most consequential provisions was Part D, which repealed high-rent and high-income luxury deregulation. L. 2019, ch 36, pt. D, §4. Luxury deregulation had been a prominent feature of the RSL since 1993.

Several days later, the Legislature enacted an HSTPA "cleanup" bill to address various ambiguities and omissions in the HSTPA. L. 2019, ch 39, pt. Q, §8 amended the luxury deregulation repeal language to provide that: