Mandan Zoning Overview

Mandan is located in Morton County, North Dakota, with a population of 22,752 (2020 Census). Situated across the Missouri River from the state capital of Bismarck, the city manages land use and development through its zoning ordinance, which is administered by the Mandan Planning Department. The zoning code divides the city into residential, commercial, and industrial districts, each with specific dimensional standards governing lot size, building height, setbacks, and density.

Key Residential Zoning Districts

R-1 — Single-Family Residential

• Minimum Lot Size: 8,000 sq ft
• Front Setback: 25 ft
• Side Setback: 6 ft
• Rear Setback: 25 ft
• Maximum Height: 35 ft

R-2 — Two-Family Residential

• Minimum Lot Size: 6,000 sq ft
• Front Setback: 20 ft
• Side Setback: 5 ft
• Rear Setback: 20 ft
• Maximum Height: 35 ft

R-3 — Multi-Family Residential

• Allows multi-family dwellings including apartments
• Dimensional standards vary; consult the municipal code

Commercial and Industrial Districts

• C-1 (Neighborhood Commercial) — Intended for smaller-scale retail and service uses that serve surrounding residential neighborhoods.
• C-2 (General Commercial) — Accommodates a wide range of retail, office, and service uses, typically along major corridors.
• I (Industrial) — Designated for manufacturing, warehousing, and related industrial operations.

Specific dimensional standards for commercial and industrial districts vary. Consult the Mandan Municipal Code for current requirements.

Building Code

Mandan follows the ND State Building Code, which is based on the International Building Code (IBC) and the International Residential Code (IRC). All construction, renovation, and demolition projects must comply with this code. Contact the Mandan Planning Department at (701) 667-3225 for information about any local amendments or additional requirements.

ADU (Accessory Dwelling Unit) Rules

ADU regulations for Mandan have not been confirmed. North Dakota does not have a state-level law mandating that cities allow accessory dwelling units. Property owners interested in building an ADU should contact the Mandan Planning Department to determine whether ADUs are permitted in their zoning district and what standards apply.

Development Process

Development in Mandan requires obtaining the appropriate permits from the Planning Department. The process typically involves:

1. Zoning Verification — Confirm that your proposed use is permitted in the applicable zoning district
2. Site Plan Review — For commercial and multi-family projects, submit a site plan for review
3. Building Permit Application — Apply for a building permit with construction documents
4. Inspections — Schedule required inspections during construction
5. Certificate of Occupancy — Obtain final approval before occupying the structure

For projects that do not conform to existing zoning, property owners may need to seek a variance, conditional use permit (CUP), or rezoning through the Board of Adjustment or Planning and Zoning Commission.

Key Considerations

Before starting any development project in Mandan, property owners should:

• Verify the zoning classification of their property through the Planning Department or the municipal code
• Review setback, height, and lot coverage requirements for the applicable district
• Check for any overlay districts or special regulations
• Determine if the property is in a flood zone using FEMA's flood map service
• Confirm whether HOA covenants or deed restrictions apply
• Contact the Planning Department at (701) 667-3225 for pre-application guidance

Disclaimer: This guide provides general information about zoning in Mandan and should not be relied upon as legal advice. Zoning codes are subject to change. Always verify current regulations with the Mandan Planning Department or the municipal code before making development decisions.