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Zoning Atlas Technical Appendix
  • Introduction
  • Data Sources
    • Spatial Data
    • Tabular Data
  • Interpretation of Zoning Districts
    • Not Referenced or Unspecified Core Fields
    • Multiple By-Right Dimensional Regulations
  • Field Structure
  • Field Groups
    • Zone Use Type
    • Multifamily Housing
    • Minimum Lot Size
    • Maximum Percent Lot Coverage
    • Minimum Land Area per Dwelling Unit
    • Maximum Building Height
    • Maximum Building Floors
    • Maximum Dwelling Units
    • Dwelling Units per Acre
    • Floor-area Ratio
  • Data Dictionary
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Interpretation of Zoning Districts

The section of the technical documentation pertains to base zoning districts.

PreviousTabular DataNextNot Referenced or Unspecified Core Fields

Last updated 4 years ago

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For the base zoning districts in the Zoning Atlas, MAPC defined a basic set of “core fields” covering use allowances and dimensional requirements to populate. The core fields are as follows:

  • Minimum lot size

  • Dwelling units allowed per acre

  • Maximum height

  • Maximum floor-area-ratio (FAR)

  • Whether multifamily housing was a permitted use, and if a special permit was required

The values in the Zoning Atlas for these fields generally reflect the by-right regulations of a zone as they appeared in the bylaw or ordinance on the date it was accessed by MAPC. The exception to this rule is the four multifamily fields (MULFAM2, MULFAM3_4, MULFAM5_19, and MULFAM20_), which capture uses allowed by special permit, in addition to those allowed by-right.

The pages below describe two our approach to two common interpretation challenges:

Not Referenced or Unspecified Core Fields
Multiple By-Right Dimensional Regulations