Do I Need a Permit to Build a Shed in North Dakota?

A Statewide Code with a 120-Square-Foot Threshold

North Dakota has a true statewide building code — and unlike many western and Great Plains states, it's not optional. State law mandates that any city, county, or township that elects to enforce a building code must adopt and enforce the North Dakota State Building Code. The code is maintained by the North Dakota Department of Commerce, Division of Community Services, and is updated regularly as new editions of the International Code Council standards are published.

The current edition, effective January 1, 2026, is based on the 2024 International Building Code, 2024 International Residential Code, 2024 International Mechanical Code, and 2024 International Fuel Gas Code, all with North Dakota-specific amendments. The North Dakota State Plumbing Code and the Wiring Standards of North Dakota — administered by separate state boards — cover plumbing and electrical work.

For shed builders, the key provision is the permit exemption in the IRC as adopted by North Dakota: one-story detached accessory structures used as tool and storage sheds, playhouses, and similar uses are exempt from a building permit when the floor area does not exceed 120 square feet. This is the IRC's default threshold, and North Dakota has not amended it upward or downward.

For a broader perspective on how shed permits work nationally, see our national guide to shed permits.

How Five Major Cities Handle Shed Permits

Fargo: 120 Square Feet with a Flood Zone Exception

Fargo — the state's largest city — follows the state code's 120-square-foot threshold. If your shed is under 120 square feet, you don't need a building permit. But the city's inspections department adds one important caveat: sheds located in the floodplain require a permit regardless of size.

This matters in Fargo more than almost anywhere else in North Dakota. The city sits along the Red River, which floods regularly, and large portions of the city are in FEMA-designated flood zones. The catastrophic floods of 1997 and 2009 shaped Fargo's approach to floodplain regulation, and the city takes flood zone compliance seriously for all structures.

For sheds outside flood zones, Fargo's rules are straightforward. The shed must be at least 3 feet from rear and side property lines and cannot be built on an easement. The structure must sit completely behind the house — no accessory buildings in the front yard. Permit fees are valuation-based, and the city provides an online calculator to estimate costs. Review time is typically 3 to 5 business days for standard residential projects.

Bismarck: State Code, Straightforward Process

Bismarck applies the state code directly. Sheds under 120 square feet are exempt from a building permit. For larger sheds, the city requires a permit application with a site plan showing the shed's location relative to property lines, easements, and existing structures.

Bismarck's climate adds a practical consideration: the city's frost depth is approximately 54 inches, meaning any shed that requires a code-compliant foundation needs footings nearly 5 feet below grade. For small exempt sheds, a gravel pad or concrete block supports are acceptable. For larger sheds, most builders opt for post-frame construction with posts set below the frost line, which is more economical than poured footings for accessory buildings.

Grand Forks: Flood Risk Shapes the Rules

Grand Forks experienced devastating flooding in 1997 when the Red River inundated much of the city. The aftermath reshaped the city's approach to development, and floodplain regulations are strict. Like Fargo, Grand Forks applies the state code's 120-square-foot exemption but requires permits for any structure in flood-prone areas regardless of size.

The city rebuilt with extensive flood protection, but many residential properties still carry flood zone designations. If your property is in or near the protected floodway, verify your flood status with the city before planning any construction — including a shed.

West Fargo: Additional Size and Height Limits

West Fargo follows the state code's 120-square-foot permit exemption but adds local zoning restrictions that go beyond the state standard. The city caps accessory structures at a maximum of 1,000 square feet unless otherwise noted in the zoning ordinance, and limits height to 15 feet — measured from grade to the midpoint between eaves and ridge for gable roofs.

West Fargo requires all accessory structures over 120 square feet to include detailed plans with the permit application: foundation design, wall framing details, truss specifications, and a site plan with dimensions to all property lines. The city requires all accessory structures to be anchored into the ground a minimum of 12 inches, even for small sheds. Foundation options include concrete slabs with turned-down footings or decay-resistant wood bases. Plan review takes 3 to 5 business days, and the city contacts you when plans are approved.

Williston: Oil Boom Town, Standard Rules

Williston — the hub of North Dakota's oil boom — follows the state code's 120-square-foot exemption. Sheds over 120 square feet need a permit and must be at least 3 feet from side and rear property lines and 6 feet from the house. No accessory structures are allowed in the front yard.

Williston's rapid growth over the past decade means many neighborhoods are relatively new, and HOA restrictions are common in newer subdivisions. The city requires contractors working within its jurisdiction to hold a North Dakota Contractor's License and current liability insurance — copies must be provided before a permit is issued.

Frost Depth: The Defining Factor

North Dakota's frost line is among the deepest in the nation, and it varies significantly from south to north:

• Southern cities (Fargo, Wahpeton): approximately 48 inches
• Central cities (Bismarck, Jamestown): approximately 54 inches
• Northern and western cities (Minot, Williston, Grand Forks): approximately 60 inches or more

For sheds under 120 square feet, the IRC exempts freestanding accessory structures with an eave height of 10 feet or less from frost-depth foundation requirements. A gravel pad, concrete blocks, or treated timber skids are all acceptable. The structure should still be anchored to resist wind uplift.

For sheds over 120 square feet, foundations must extend below the frost line. The most common approaches in North Dakota are:

• Post-frame construction — treated posts set in the ground at or below frost depth, supporting the building frame above. This is the dominant method for agricultural and residential accessory buildings across the state.
• Concrete piers — poured in sonotube forms extending below frost depth, with the building anchored to the piers.
• Frost-protected shallow foundations — insulated perimeter footings that prevent frost from reaching below the footing. Less common for sheds but allowed by the code.

Post-frame construction deserves special mention because it's so prevalent in North Dakota. The method is well-suited to the state's soil conditions, handles frost depth cost-effectively, and produces buildings that perform well in high-wind conditions — all important factors in North Dakota.

Wind Loads and Anchoring

North Dakota sits squarely in the Great Plains wind corridor. The state experiences some of the highest average wind speeds in the country, and severe thunderstorms with damaging wind gusts are a regular summer occurrence. The western half of the state is particularly wind-prone.

The state building code requires all structures — including accessory buildings — to be designed for the wind speed applicable to their location. For most of North Dakota, the design wind speed is approximately 115 mph (3-second gust). West Fargo's code explicitly requires all accessory structures to be anchored at least 12 inches into the ground.

Even for small exempt sheds under 120 square feet, anchoring is a practical necessity. An unsecured shed in a North Dakota thunderstorm is a liability. Auger-style ground anchors, concrete pier blocks, or a concrete slab with anchor bolts are all effective options.

Electrical Work: State-Level Oversight

North Dakota's Wiring Standards are administered by the North Dakota State Electrical Board, and they apply statewide — not just in jurisdictions that enforce building codes. Any electrical work on a shed, no matter how simple, requires a permit from the state electrical board and must be performed by a licensed electrician.

This applies to running a circuit from your house panel to the shed, installing a subpanel, or even adding a single outlet. The electrical permit and inspection are separate from the building permit process. Plan for additional time and cost if your shed will have power.

The Rural Exception

North Dakota's building code mandate only applies to jurisdictions that choose to enforce a code. While nearly all cities with populations above a few thousand have adopted and enforce the state building code, many rural townships and smaller communities have not.

In areas without building code enforcement, there are no permit requirements for shed construction. You could theoretically build any size shed without interacting with any government office. However, several cautions apply:

• County zoning may still regulate setbacks, lot coverage, and permitted uses even in areas without a building code
• Floodplain regulations apply regardless of building code adoption — federal law requires communities participating in the National Flood Insurance Program to regulate development in flood zones
• Electrical work still requires a state electrical permit everywhere in North Dakota
• Property taxes — your county assessor will eventually add the structure to your tax rolls regardless of whether you pulled a permit

HOA Restrictions

North Dakota's Homeowners Association (HOA) presence is concentrated in the newer subdivisions of Fargo, West Fargo, Bismarck, and the Williston oil patch communities. HOA restrictions commonly include limits on shed size, materials, and placement. Some HOAs prohibit metal-sided sheds, require sheds to match the home's exterior, or limit the total number of accessory structures per lot.

The building department doesn't enforce HOA rules, so it's possible to have a valid building permit for a shed that violates your HOA's covenants. Check your deed restrictions before planning your project.

Consequences of Skipping the Permit

In cities that enforce the state building code, building without a required permit carries these risks:

• Double permit fees — most jurisdictions charge a penalty for work started before a permit is issued
• Stop-work orders — construction must halt until a permit is obtained
• Removal orders — if the shed violates setbacks or cannot be brought into compliance
• Sale complications — unpermitted structures create issues during home inspections and title transfers

Permit fees for a typical residential shed in North Dakota run $50 to $150. The minimum fee in many jurisdictions is $40. Given the modest cost, pulling a permit is straightforward insurance against future problems.

If you're also planning a garage or carport alongside your shed, coordinate with your city about total lot coverage limits and the combined size of accessory structures. West Fargo, for example, caps total accessory building area at 1,000 square feet without a conditional use permit.

For an overview of all building permit requirements in North Dakota — including decks, fences, pools, and more — see our complete North Dakota building permit guide.