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Danbury Zoning & Land Use Guide

Last updated: Verified:

Key Zoning Facts

Planning Department
City of Danbury Planning & Zoning Department(203) 797-4525
Building Code Edition
2022 Connecticut State Building Code (based on 2021 IBC as amended)
ADUs Allowed
No
Primary District
RA-80 Single Family Residential
Max Height
35 ft

Danbury Zoning Overview

Danbury is a city in Fairfield County, Connecticut with a population of approximately 86,500 (2020 Census). The city manages land use through its zoning regulations, administered by the Planning & Zoning Department.

Danbury uses a detailed zoning system with lot-size-based residential zones, multi-family zones, multiple commercial district types, and industrial zones. The city also has a Downtown Transit Oriented Development (D-TOD) district.

Key Zoning Districts

Residential Districts

  • RA-80 — Single-family residential (80,000 sq ft minimum lot)
  • RA-40 — Single-family residential (40,000 sq ft minimum lot)
  • RA-20 — Single-family residential (20,000 sq ft minimum lot)
  • RA-8 — Single-family residential (8,000 sq ft minimum lot)
  • RMF-10 / RMF-6 / RMF-4 — Multi-family residential
  • R-3 — Three-family residential
  • RH-3 — High-rise residential
  • RR-10 — Waterfront residential-recreational
  • R-O — Residential-office
  • PND — Planned Neighborhood Development

Commercial Districts

  • CG-20 — General Commercial
  • CA-80 — Arterial Commercial
  • CL-10 — Light Commercial
  • CN-5 / CN-20 — Neighborhood Commercial
  • LCI-40 — Limited Roadside Commercial Industrial
  • D-TOD — Downtown Transit Oriented Development
  • CRP — Campus Research Park
  • MURMMixed-Use Regional Mall

Industrial Districts

  • IL-40 — Light Industrial (40,000 sq ft minimum lot)
  • IG-80 — General Industrial (80,000 sq ft minimum lot)

Accessory Dwelling Units (ADUs)

Under Connecticut PA 21-29, Danbury is required to allow accessory dwelling units. Contact Planning & Zoning at (203) 797-4525 for specific local ADU regulations.

Development Process

  1. Zoning Verification — Check your property's zoning using the interactive GIS map or contact Planning & Zoning at (203) 797-4525
  2. Application Submission — Submit required applications to the Planning & Zoning Commission
  3. Public Hearing — Required for special permits, variances, and zone changes
  4. Building Permit — Obtain from the Building Department
  5. Inspections — Schedule required inspections during construction

Key Considerations

  • Danbury has a Downtown Transit Oriented Development (D-TOD) district encouraging mixed-use development near transit
  • The Campus Research Park (CRP) zone accommodates corporate and research uses
  • Review the full zoning regulations for specific dimensional standards
  • Verify flood zone status using FEMA's Flood Map Service

Disclaimer: This guide provides general information about zoning in Danbury and should not be relied upon as legal advice. Zoning codes are subject to change. Always verify current regulations with the Danbury Planning & Zoning Department at (203) 797-4525 before making development decisions.

Regulatory Layers That Apply in Danbury

Your property is subject to ALL of these regulatory layers. Each one can impose additional requirements beyond the others.

Federal

State — Connecticut

  • Building Code: 2022 Connecticut State Building Code (based on 2021 IBC as amended)
  • State ADU Override: Yes (Connecticut PA 21-29)
View Connecticut zoning overview

County — Fairfield County

  • Role: County-level geographic reference; Connecticut has no county government.

City / Municipal

The city's zoning ordinance, building codes, and local permits form the primary layer of land-use regulation for your property.

Overlay Districts

No overlay districts identified.

Private Restrictions

  • HOA / CC&Rs common: Yes
  • Check HOA CC&Rs and deed restrictions for additional requirements.

Primary Zoning Districts

RA-80Single Family Residential
Min Lot
80,000 sq ft
Max Height
35 ft
Front Setback
Varies
Side Setback
Varies
Rear Setback
Varies
RA-40Single Family Residential
Min Lot
40,000 sq ft
Max Height
35 ft
Front Setback
Varies
Side Setback
Varies
Rear Setback
Varies
RA-20Single Family Residential
Min Lot
20,000 sq ft
Max Height
35 ft
Front Setback
Varies
Side Setback
Varies
Rear Setback
Varies
RA-8Single Family Residential
Min Lot
8,000 sq ft
Max Height
35 ft
Front Setback
Varies
Side Setback
Varies
Rear Setback
Varies
RMF-10Multi-Family Residential
Min Lot
Varies
Max Height
Varies
Front Setback
Varies
Side Setback
Varies
Rear Setback
Varies
CG-20General Commercial
Min Lot
20,000 sq ft
Max Height
Varies
Front Setback
Varies
Side Setback
Varies
Rear Setback
Varies
CA-80Arterial Commercial
Min Lot
80,000 sq ft
Max Height
Varies
Front Setback
Varies
Side Setback
Varies
Rear Setback
Varies
D-TODDowntown Transit Oriented Development
Min Lot
Varies
Max Height
Varies
Front Setback
Varies
Side Setback
Varies
Rear Setback
Varies
IL-40Light Industrial
Min Lot
40,000 sq ft
Max Height
Varies
Front Setback
Varies
Side Setback
Varies
Rear Setback
Varies
IG-80General Industrial
Min Lot
80,000 sq ft
Max Height
Varies
Front Setback
Varies
Side Setback
Varies
Rear Setback
Varies

ADU Rules in Danbury

ADUs:Not Allowed

Permit Costs & Timelines

Permit Costs & Timelines

Specific permit fee schedules for Danbury are available from the local planning department. Fees vary based on project type, scope, and valuation.

Check Danbury permit fees →

Official Sources

Frequently Asked Questions

How do I find the zoning for my property in Danbury?
Use the Danbury interactive GIS map at axisgis.com/danburyct or contact Planning & Zoning at (203) 797-4525.
What building code does Danbury follow?
Danbury follows the Connecticut State Building Code, based on the International Building Code as amended by the state.
Can I build an ADU in Danbury?
Under Connecticut PA 21-29, municipalities must allow accessory dwelling units. Contact Planning & Zoning at (203) 797-4525 for local requirements.