Zoning for More Transit-Oriented Housing Development in Massachusetts
Last year, Massachusetts passed the Multi-Family Zoning Requirement for MBTA Communities (also known as Section 3A). When fully implemented, the law will impact the 175 municipalities—half of the total in the Commonwealth—that are served by the state’s mass transit system. Section 3A mandates that there must be at least one zoning district where multi-family housing is allowed "as of right."
Source: uli.org