Local Law 150 of 2016 falls within DOB’s jurisdiction and will require as of January 1, 2020 a DOB-issued “gas qualification” to complete work on building gas piping systems within the Department’s jurisdiction. The law provides for exceptions: if you are a licensed master plumber or a DOB-registered journeyman by January 1, 2019, you automatically hold “gas qualification” for purposes of building gas piping systems.