Zoning Study Guide

ZONING

Introduction to Zoning

  • Definition: Regulatory controls on land use and built form.

  • Purpose: Organizes urban environments by regulating activities, building dimensions, and other developmental standards.

Key Concepts

  • Zoning regulations are also known as zoning ordinances or zoning by-laws.

  • Local government jurisdictions are divided into districts (zones) with specific regulations applicable to all properties in each zone.

Core Components of Zoning Regulations

  • Control over:

    1. Activity (land uses)

    2. Built form (dimensions, position, and density)

    3. Other developmental standards (e.g., parking, landscaping)

Zoning Map vs Zoning Text

  • Zoning Map: Spatial delineation of zoning districts.

  • Zoning Text: Describes common standards for different zone types.

Historical Context and Evolution of Zoning

Quote from Söderström (1996)

  • "A spatial processing device of a new kind, the zoning plan also represented a temporal processing device. With it, urban planning entered a new era, transforming the city into a 'logical and predictable structure.' The zoning plan allowed a reduction of uncertainty as to the future of the city…"

Zoning Types and Examples in NYC

  • Common zoning types include:

    • R-2, R-3 (Residential districts)

    • C-1, C-2 (Commercial districts, e.g., C-2C includes various goods and services).

  • Each district uses specific regulations to determine the intended use, coverage, density, and hierarchy of developments.

Zoning Regulations Elaborated

  • Regulatory measures:

    1. Permitted activities (e.g., residential, commercial, mixed).

    2. Dimensions (lot size, building height, coverage).

    3. Setbacks and landscaping:

      • Setbacks define distances from property lines that buildings must maintain.

    4. Density calculations (Floor Area Ratio - FAR).

  • Examples of FAR:

    • FAR = total floor area / site area.

Zoning Case Study: Village of Euclid v. Ambler Realty (1926)

  • Supreme Court Ruling: Upheld single-use zoning as a legitimate exercise of police power to regulate land use to preserve public health and safety.

  • Introduced the concept of “Euclidean zoning,” emphasizing separation of land uses.

Challenges with Zoning

  • Separation vs Mixed-Use:

    • Historically, land uses were separated to prevent nuisances, but this has created challenges such as increased transportation needs.

  • Contemporary Trends: There is a current emphasis on mixed-use zones to enhance urban vibrancy and reduce dependency on cars.

Zoning Code and Graphics

Graphic Representation

  • Line Weight and Types:

    • Visible change line: thick lines indicating a boundary or change in zoning.

    • Hidden line: thinner lines representing elements not directly visible.

    • Dimension line: indicates measurements and sizes on zoning maps.

Conclusion on Zoning

  • Zoning regulations greatly shape the urban environment, impacting everything from land use to the types of buildings that can be constructed.

  • Understanding zoning is crucial for urban planning and development, catering to needs while addressing social and environmental concerns.