Sidney Zoning & Land Use Guide
Key Zoning Facts
Sidney Zoning Overview
Sidney is a small city in eastern Montana's Richland County, located near the confluence of the Yellowstone and Missouri rivers close to the North Dakota border. The city experienced rapid growth during the Bakken oil boom, which brought an influx of workers and strained housing and infrastructure. While activity has moderated, Sidney remains an important service center for the oil industry and regional agriculture.
The city's zoning framework was tested by the boom-and-bust cycle of oil development, highlighting the need for flexible regulations that can accommodate rapid change. Sidney's planning efforts now focus on maintaining infrastructure, supporting steady economic development, and providing adequate housing for its residents.
Key Zoning Districts
Sidney uses R-1 (Single-Family), R-2 (Multi-Family), C-1 (General Commercial), and I-1 (Industrial) districts. The city expanded its development area during the oil boom and has worked to integrate new subdivisions with existing neighborhoods.
ADU Regulations
Montana state law (SB 528 and HB 211) requires Sidney to allow ADUs in residential zones. No owner-occupancy or parking mandates can be imposed. ADUs became particularly relevant during the oil boom as a source of additional housing.
Development Process
Building permits in Sidney are processed through the city's Building Department. The Planning Board reviews zoning changes and conditional use applications.
Regulatory Layers That Apply in Sidney
Your property is subject to ALL of these regulatory layers. Each one can impose additional requirements beyond the others.
Federal
- FEMA Flood Zones: Applicable
- View FEMA Flood Map
State — Montana
- Building Code: Montana Building Code (based on 2021 IBC)
- State ADU Override: Yes (SB 528 and HB 211)
County — Richland 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
- Min Lot
- 7,500 sq ft
- Max Height
- 35 ft
- Front Setback
- 25 ft
- Side Setback
- 6 ft
- Rear Setback
- 20 ft
- Min Lot
- 5,000 sq ft
- Max Height
- 40 ft
- Front Setback
- 20 ft
- Side Setback
- 8 ft
- Rear Setback
- 20 ft
- Min Lot
- None
- Max Height
- 40 ft
- Front Setback
- 0 ft
- Side Setback
- 0 ft
- Rear Setback
- 10 ft
ADU Rules in Sidney
- Max Size
- 800 sq ft
- Max Height
- 22 ft
- Rear Setback
- 5 ft
- Side Setback
- 5 ft
- Parking
- None required (per state law SB 245)
- Owner Occupancy
- Not required (per state law)
- Permit Timeline
- 2-4 weeks
Permit Costs & Timelines
Permit Costs & Timelines
Specific permit fee schedules for Sidney are available from the local planning department. Fees vary based on project type, scope, and valuation.
Check Sidney permit fees →