Land Use and Zoning

State-Specific Requirements

This skill provides general frameworks for zoning and land use analysis. Before providing any zoning or land use guidance, you MUST read state-references/{STATE}.md (where {STATE} is the state abbreviation from municipal.local.md, e.g., state-references/IL.md for Illinois). Do not give generic answers when a state reference exists — read it and cite the specific enabling authority, procedural deadlines, legal standards, and court-established reasonableness tests.

Critical for non-home-rule municipalities: Zoning authority derives entirely from state enabling legislation. Non-home-rule municipalities can only exercise powers explicitly granted. The state reference identifies the specific statutory sections, enumerated powers, notice periods, decision deadlines, and appeal timelines that govern all zoning actions.

Overview

Zoning is the primary tool municipalities use to regulate land use. It divides the community into districts and specifies what uses are permitted, conditionally permitted, or prohibited in each district, along with dimensional and design standards.

Zoning Fundamentals

Legal Basis

• Zoning is an exercise of police power
• Must serve legitimate public purpose (health, safety, welfare)
• Cannot be arbitrary or discriminatory
• Must provide due process
• Subject to "takings" limitations (5th Amendment)

Enabling Authority

• States grant zoning authority to municipalities through enabling legislation (see state reference for specific statutory sections and enumerated powers)
• Standard Zoning Enabling Act (1926) — historical model; most states have their own enabling statutes
• Home rule municipalities derive zoning authority from their state constitution (broader powers)
• Non-home-rule municipalities derive authority exclusively from state enabling legislation (limited to enumerated powers) — see state reference for constitutional framework and population thresholds
• State law may preempt certain local regulations — check state reference for preemption landscape

Zoning District Types

Residential Districts (typical hierarchy)

• R-1 / SF-1: Single-family detached, large lots
• R-2 / SF-2: Single-family detached, medium lots
• R-3 / SF-3: Single-family detached, small lots
• R-4 / TF: Two-family / duplex
• R-5 / MF-1: Multi-family, low density
• R-6 / MF-2: Multi-family, medium density
• R-7 / MF-3: Multi-family, high density

Commercial Districts (typical)

• C-1 / NC: Neighborhood commercial
• C-2 / CC: Community commercial
• C-3 / RC: Regional commercial
• C-4 / HC: Highway commercial
• CBD: Central business district
• O: Office

Industrial Districts (typical)

• I-1 / LI: Light industrial
• I-2 / HI: Heavy industrial
• BP: Business park

Special Districts

• PUD: Planned Unit Development
• MU: Mixed Use
• TOD: Transit-Oriented Development
• H: Historic
• A: Agricultural
• OS: Open Space
• P: Public/Institutional

Zoning Standards

Dimensional Standards

• Lot size minimum: Square footage or acreage
• Lot width minimum: Frontage requirement
• Setbacks: Front, side, rear yard requirements
• Building height: Maximum feet or stories
• Lot coverage: Maximum % of lot that can be built on
• Floor Area Ratio (FAR): Ratio of building area to lot area
• Impervious surface: Maximum % of lot that can be paved/built

Use Regulations

• Permitted uses: Allowed by right
• Conditional/Special uses: Allowed with additional review
• Accessory uses: Subordinate to principal use
• Prohibited uses: Not allowed in district
• Temporary uses: Time-limited permissions

Design Standards

• Architectural standards
• Landscaping requirements
• Parking requirements
• Signage regulations
• Lighting standards
• Screening/buffering requirements

Development Review Process

By-Right Development

1. Application submitted
2. Staff review for code compliance
3. Permit issued if compliant
4. No public hearing required

Special Use / Conditional Use Permit

1. Application submitted
2. Staff review and report
3. Public notice (mail, posting, publication)
4. Public hearing (Plan Commission or ZBA)
5. Recommendation to Council (or final action by commission)
6. Council action (if required)
7. Conditions may be attached

Variance

1. Application submitted
2. Staff review
3. Public notice (see state reference for required notice period, e.g., Illinois requires 15-day newspaper publication)
4. Public hearing (typically Zoning Board of Appeals)
5. Findings required — applicant must demonstrate "unnecessary hardship" or "practical difficulty":
   • Hardship (not self-created)
   • Unique circumstances
   • Not merely financial
   • Minimum variance necessary
   • Not contrary to public interest
6. Decision deadline — see state reference (e.g., Illinois requires action within 90 days of hearing)
7. Appeal — see state reference for appeal timeline (e.g., Illinois: 45 days under Administrative Review Law)

Note: Variances involve a distinct legal test from special use permits. Special uses evaluate compatibility of an otherwise-permitted use at a specific location; variances evaluate whether hardship justifies a deviation from standards.

Court-established reasonableness tests: Many states have court-established factors for evaluating zoning decision reasonableness (e.g., Illinois LaSalle/Sinclair factors: character of surrounding area, property value impact, public benefit, comprehensive plan consistency, gain to public vs. hardship on owner). See state reference for applicable legal standards.

Rezoning / Map Amendment

1. Application submitted (or initiated by municipality)
2. Staff review and report
3. Public notice (expanded notification)
4. Plan Commission public hearing
5. Plan Commission recommendation
6. City Council public hearing (often required)
7. City Council action (may require supermajority)

Planned Unit Development (PUD)

1. Pre-application conference
2. Concept plan review
3. Preliminary plan submission
4. Public hearings (Plan Commission and Council)
5. Final plan approval
6. Development agreement
7. Phased implementation

Nonconforming Uses and Structures

Definitions

• Nonconforming use: Use that was legal when established but no longer permitted
• Nonconforming structure: Building that doesn't meet current dimensional standards
• Nonconforming lot: Lot that doesn't meet current size requirements

Common Rules

• May continue but cannot expand
• If abandoned for specified period, rights lost
• If destroyed beyond specified %, cannot rebuild
• May have amortization provisions (controversial)
• Variance not needed to maintain

Form-Based Codes

Form-based codes are a contemporary alternative to conventional Euclidean zoning that regulate development based on physical form rather than use separation.

Core Concept

• Regulates building type, placement, and frontage rather than separating land uses
• Development outcomes are more predictable because the code specifies physical form directly
• Mixed use is permitted by default in most zones; the code controls the built environment, not the activity inside

The Transect

Form-based codes typically organize zones along a rural-to-urban transect — a gradient of intensity:

• T1 Natural: Preserved lands, open space, no development
• T2 Rural: Agricultural land, very low density, natural character
• T3 Sub-Urban: Lower-density residential, detached buildings, landscaped yards
• T4 General Urban: Mixed-use, moderate density, attached and detached buildings, defined streetscape
• T5 Urban Center: Higher-density mixed-use, buildings at or near the sidewalk, active ground floors
• T6 Urban Core: Highest density and intensity, towers and large-footprint buildings, major civic presence

Key Elements

• Regulating plan: The map assigning transect zones (replaces the traditional zoning map)
• Building form standards: Envelope, height, setback, frontage type, parking placement
• Street standards: Right-of-way design specifying travel lanes, sidewalks, tree plantings, on-street parking
• Public space standards: Requirements for plazas, greens, parks, and civic spaces

Advantages over Conventional Zoning

• More predictable physical outcomes for neighborhoods and corridors
• Mixed use by default encourages walkability and reduces auto dependency
• Focuses community discussion on the built environment rather than use lists
• Reduces the need for variances and PUD negotiations

Adoption Approaches

• Overlay: Applied to a specific area on top of existing zoning (lowest-risk pilot)
• Parallel code: Applicants may choose either the conventional code or the form-based code
• Full replacement: Entire zoning ordinance replaced with form-based code (most comprehensive)
• Growing adoption nationwide: SmartCode (model template), Miami 21 (first citywide form-based code), and many smaller municipalities adopting form-based elements for downtown or corridor plans

Affordable Housing and Inclusionary Zoning

Municipalities increasingly use zoning and regulatory tools to promote or require affordable housing within new development.

Inclusionary Zoning

• Requires or incentivizes developers to include affordable units in market-rate projects
• Can be mandatory (required by ordinance) or voluntary (incentive-driven)
• Common set-aside: 10-20% of units at specified Area Median Income (AMI) levels (e.g., 60% AMI, 80% AMI)

Common Implementation Tools

• Density bonuses: Allow additional units beyond base zoning in exchange for affordable units
• Fee-in-lieu: Developers pay into a housing fund instead of building affordable units on site
• Land dedication: Developer donates land for affordable housing development
• Tax abatement: Property tax reductions for projects that include affordable units
• Reduced parking requirements: Lower parking minimums for affordable housing projects

Affordability Period

• Duration that units must remain affordable varies: 15-30 years is typical
• Some programs require permanent affordability through deed restrictions or land trust models
• Monitoring and compliance mechanisms are essential (annual income verification, resale restrictions)

Housing Element and State Mandates

• Some states require comprehensive plans to include a housing element addressing affordability
• State-level mandates may set housing production targets or preempt local exclusionary practices
• Check municipal.local.md for your state's housing mandates and local affordable housing goals

Fair Housing Considerations

• Zoning cannot discriminate on the basis of race, color, religion, sex, familial status, national origin, or disability (Fair Housing Act)
• Exclusionary zoning — using lot-size minimums, single-family-only districts, or other tools to effectively exclude lower-income or minority populations — is legally vulnerable
• Affirmatively furthering fair housing (AFFH) obligations may apply to municipalities receiving federal funding
• Jurisdictions should review zoning for disparate impact and barriers to housing choice

Special Planning Tools

Tax Increment Financing (TIF)

• Freezes base property tax
• Increment funds improvements in district
• Time-limited (duration varies by state — commonly 15-30 years)
• Requires finding of blight, conservation area, or similar statutory criteria
• May require review board, joint review, or public hearing process (varies by state)

Special Service Areas (SSA)

• Additional property tax for specific services
• Limited geographic area
• Services above normal municipal level
• Requires petition or referendum

Business Improvement Districts (BID)

• Self-taxing commercial districts
• Fund marketing, maintenance, security
• Governed by property owner board

Historic Preservation

• Design review for alterations
• Demolition delay or prohibition
• Tax incentives for rehabilitation
• Secretary of Interior standards

Overlay Districts

• Additional regulations on top of base zoning
• Examples: floodplain, airport, historic, design
• More restrictive standard applies

Comprehensive Plan

Purpose

• Long-range vision for community
• Guide for zoning decisions
• Not legally binding (in most states) but influential
• Required for zoning validity in some states

Elements (typical)

• Land use
• Transportation
• Housing
• Economic development
• Parks and open space
• Community facilities
• Utilities
• Environmental resources

Plan-Zoning Relationship

• Zoning should implement the plan
• Rezoning inconsistent with plan raises questions
• Plan amendments may precede rezoning

Using Connected Tools

Use municipal-code to look up zoning provisions. See the municipal-code-analysis skill for the full MunicipalMCP tool reference.

Common search patterns for zoning analysis (use search_municipal_codes with these queries):

• Zoning districts and use tables: "zoning district", "permitted uses", "conditional use"
• Dimensional standards: "setback", "building height", "lot coverage", "floor area ratio"
• Variances and special uses: "variance", "special use permit", "zoning board of appeals"
• PUD and development agreements: "planned unit development", "development agreement"
• TIF districts: "tax increment", "redevelopment area", "TIF"
• Nonconforming uses: "nonconforming", "legal nonconforming", "amortization"
• Overlay districts: "overlay district", "historic district", "floodplain"

Workflow tip: Use titles_only=true first to identify the zoning title/chapter structure, then drill into specific sections with get_code_section.

When connected tools are unavailable, note the gap and suggest manual verification via the municipality's code website.

Planned connectors (not yet available — plugin works without these):

• agenda-management — development application status
• document-management — staff reports and plans

Municipal Configuration

Check municipal.local.md for:

• Zoning code title/chapter reference
• Subdivision code reference
• Active TIF districts
• Special districts
• Plan commission structure
• State-specific procedures

Related Skills

• municipal-code-analysis — zoning code interpretation, amendment analysis, and cross-referencing
• public-finance — TIF districts, special assessments, and fiscal impact of development proposals
• policy-evaluation — evaluating land use policy changes, comprehensive plan alignment, and regulatory impact

Key Questions for Zoning Analysis

1. What is the current zoning?
2. What uses are permitted/conditional/prohibited?
3. What are the dimensional requirements?
4. Is the use by-right or does it need approval?
5. Are there any overlay districts?
6. Is the property in a TIF district?
7. What does the comprehensive plan say?
8. Are there any nonconforming issues?
9. What is the review process?
10. Who has final decision authority?