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Fort Collins Zoning & Land Use Guide

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Key Zoning Facts

Building Code Edition
2021 IBC with Fort Collins Amendments
ADUs Allowed
Yes
Primary District
RL Residential Low Density
Max Height
28 ft

Fort Collins Zoning Overview

Fort Collins, home to Colorado State University, is the fourth-largest city in Colorado and the economic center of Larimer County. The city uses a unique land use code (Article 4 of the Municipal Code) that combines elements of performance-based and form-based zoning rather than relying on a purely traditional Euclidean system. Fort Collins organizes its zoning into district types that describe intended development patterns, such as Low Density Mixed-Use Neighborhood (LMN) and Medium Density Mixed-Use Neighborhood (MMN), reflecting the city's emphasis on walkable, mixed-use communities.

Fort Collins has a strong tradition of proactive planning, with its City Plan comprehensive plan guiding growth along transit corridors and into established urban areas rather than sprawling outward. The city's transit system, Transfort, including the MAX Bus Rapid Transit line along Mason Street, has influenced land use patterns and spurred transit-oriented development in the downtown and midtown areas. Fort Collins is known for its high quality of life, active outdoor recreation culture, and a historic downtown that serves as a model for Main Street preservation.

Development review in Fort Collins is handled by Community Development & Neighborhood Services, which processes development plans, building permits, and land use applications through a tiered review system that ranges from administrative review to Planning and Zoning Commission hearings.

Key Zoning Districts

Fort Collins uses district names that describe the intended neighborhood character. The Residential Low Density (RL) district covers large-lot single-family areas, while the Low Density Mixed-Use Neighborhood (LMN) allows a mix of housing types including single-family, duplexes, and townhomes. The Medium Density Mixed-Use Neighborhood (MMN) permits higher-density housing including apartments. The Downtown (D) district allows the highest density and intensity of uses. Neighborhood Commercial (NC) and Community Commercial (CC) districts serve retail and service needs at various scales.

ADU Regulations

Fort Collins allows ADUs in residential zone districts, with regulations aligned with Colorado HB 24-1152. ADUs are limited to 800 square feet and 20 feet in height. No additional parking is required, and owner-occupancy mandates have been removed. The city processes ADU building permits administratively with typical review times of four to six weeks.

Development Process

Fort Collins uses a multi-step development review process. Minor projects receive administrative review, while larger developments undergo Planning and Zoning Commission review. The city emphasizes conceptual review meetings before formal application submission. Building permits are processed by the Building Services Division, with residential permits typically reviewed in four to six weeks. Fort Collins offers online permit submission and tracking through its development services portal.

Regulatory Layers That Apply in Fort Collins

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

Federal

State — Colorado

  • Building Code: 2021 IBC (locally adopted)
View Colorado zoning overview

County — Larimer County

  • Role: Property records, tax assessment, unincorporated area planning

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 for additional restrictions.

Primary Zoning Districts

RLResidential Low Density
Min Lot
9,000 sq ft
Max Height
28 ft
Front Setback
20 ft
Side Setback
5 ft
Rear Setback
15 ft
LMNLow Density Mixed-Use Neighborhood
Min Lot
4,500 sq ft
Max Height
40 ft
Front Setback
15 ft
Side Setback
5 ft
Rear Setback
15 ft
NCNeighborhood Commercial
Min Lot
None
Max Height
40 ft
Front Setback
0 ft
Side Setback
0 ft
Rear Setback
10 ft

ADU Rules in Fort Collins

ADUs:Allowed
Max Size
800 sq ft
Max Height
20 ft
Rear Setback
5 ft
Side Setback
5 ft
Parking
No additional parking required
Owner Occupancy
Not required
Permit Timeline
4-6 weeks

Permit Costs & Timelines

Permit Costs & Timelines

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

Check Fort Collins permit fees →

Official Sources

Frequently Asked Questions

Can I build an ADU in Fort Collins?
Yes. Fort Collins permits ADUs in residential zones under the Land Use Code. The city has aligned its regulations with Colorado HB 24-1152, allowing ADUs by right with a building permit.
How do I find the zoning for my property in Fort Collins?
Use the City of Fort Collins GIS zoning map available on the city website, or contact Community Development & Neighborhood Services at (970) 416-2740.
What zones allow multi-family housing in Fort Collins?
Multi-family housing is permitted in Medium Density Mixed-Use Neighborhood (MMN), High Density Mixed-Use Neighborhood (HMN), and Downtown (D) zone districts.