Section 4. Any zoning ordinance or by-law which divides cities and towns into districts shall be uniform within the district for each class or kind of structures or uses permitted.
Districts shall be shown on a zoning map in a manner sufficient for identification. Such maps shall be part of zoning ordinances or by-laws. Assessors' or property plans may be used as the basis for zoning maps. If more than four sheets or plates are used for a zoning map, an index map showing districts in outline shall be part of the zoning map and of the zoning ordinance or by-law.
Structure Massachusetts General Laws
Part I - Administration of the Government
Title VII - Cities, Towns and Districts
Section 3a - Multi-Family Zoning As-of-Right in Mbta Communities
Section 5 - Adoption or Change of Zoning Ordinances or By-Laws; Procedure
Section 6 - Existing Structures, Uses, or Permits; Certain Subdivision Plans; Application of Chapter
Section 8 - Appeals to Permit Granting Authority
Section 9c - Child Care Facilities; Allowable Floor Area; Charges of Owner; Family Incomes
Section 12 - Boards of Appeal; Membership; Rules
Section 13 - Zoning Administrators; Appointment; Powers and Duties