Amends the Town of Black Mountain's charter, SL 1951-747, as amended, as the title indicates. Also provides that in 2020 and quadrennially thereafter, three aldermen are to be elected to four-year terms and in 2022 and quadrennially thereafter, the mayor and two aldermen are to be elected to serve four-year terms. Prohibits holding a municipal election in 2019 and extends the terms of the three members of the Board of Aldermen elected in 2015 until 2020, and the mayor and the two members of the Board of Aldermen elected in 2017 are extended until 2022. Regular municipal elections must be conducted in 2020.