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Shed Installation · Yellowstone County, Montana
In Yellowstone County, a Shed Installation generally does not require a building permit.
Yellowstone County does not issue building permits or certificates of occupancy at all for any structure outside the city limits of Billings, a jurisdictional gap the county states plainly on its own site; structures outside Billings are simply not subject to the same restrictions and permits that apply inside the city. This sits on top of a separate Montana state law that independently exempts private garages and storage buildings built for the owner's own use from state building permits in areas without local code enforcement, so a shed in unincorporated Yellowstone County can be exempt under both the county's lack of jurisdiction and the state's own private-storage-building exemption at once. Billings and the county do share a single joint City-County Planning Department for zoning purposes, so zoning questions for unincorporated land still route through that shared office even though building permits do not. This reflects the rule for Yellowstone County specifically. Local zoning, property-line setbacks, and any electrical or plumbing work can still require separate approval, so confirm the details with Billings Building Division-Permits.
Source: No county building permit authority; Billings Building Divis, IRC Montana state reside · County-specific · Verified 2026 by StateDataIndex
Permits for sheds often depend on square footage and whether the structure is permanent.
Because of severe winter weather in Montana, any exterior structures or footings must be set below the local frost line to prevent shifting, as mandated by the Montana State Building Code.
Montana law allows for citizen-initiated zoning districts, meaning neighbors can band together to create custom zoning regulations in otherwise unzoned rural areas. Fortunately, Montana maintains relatively builder-friendly regulations, keeping base permit fees competitive.
Permit fees vary by jurisdiction and by your project's valuation, so there is no single fixed figure for Yellowstone County. We only publish fees confirmed by real homeowners — none have been reported here yet.
Confirm the current fee directly with Billings Building Division-Permits ((406) 657-8270). If you have paid for a permit here, you can add it here to help others.
Office: Billings Building Division-Permits
Address: 316 N 26th St, Billings, MT 59101, USA
Phone: (406) 657-8270
Source: official Yellowstone County government records. Hours and procedures can change — call ahead to confirm.
In Yellowstone County, you or your contractor typically submit blueprints and a property survey to the local building department. Call ahead to confirm hours and accepted payment methods.
When applying for a Shed Installation permit, you or your contractor will generally need to submit the following documentation for the city's review:
Key code points for a Shed Installation in Yellowstone County: Accessory structures under 120 or 200 square feet often bypass building permits, but almost always require a zoning permit to ensure they are not built too close to the property line.
Typical processing time: a few days to several weeks, depending on current workload and the season. Contact Billings Building Division-Permits for a current estimate.
Building without authorization is considered a code violation. The local government can issue a Stop Work Order, forcing you to halt construction immediately. You may be subject to retroactive permit fees (often double the original cost), daily fines, or even a mandate to tear down the unpermitted work at your own expense.
Yes. Montana generally allows property owners to act as their own general contractor under an Owner-Builder exemption. If you take this route, you assume full legal and financial liability and must ensure all work complies with the Montana State Building Code.
Permit fees vary by jurisdiction and by your project's valuation, so Yellowstone County does not publish a single fixed figure. Confirm the exact fee with the local building department before applying.
Processing time in Yellowstone County varies by season and current application volume at the building department; contact Billings Building Division-Permits for a current estimate.
You can apply through the Billings Building Division-Permits or online via the county permit portal. For questions, call (406) 657-8270.
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Planning another home improvement project? Check the requirements and fees for:
Some cities set their own shed installation rules, separate from the county. Check your city specifically:
Building near the county line? Check requirements for neighboring areas: