Before You Build in Billings, MT: Permit & Rule Checklist (2026)
Everything you need to know before starting a home improvement project
Building a fence, installing a pool, or adding a shed? Each project has its own set of local permits and rules in Billings. This guide consolidates fence, pool, ADU, shed, fire pit, and landscaping regulations into one checklist so you know what to expect before you start.
Quick Permit Checklist
At-a-glance overview of permit categories in Billings. Click any card for details.
Fences & Walls
Height limits, materials, permits, and shared fence rules.
No specific fences & walls rules found for Billings. Check with your local building department for current requirements.
Swimming Pools
Pool permits, safety fencing, and drainage requirements.
No specific swimming pools rules found for Billings. Check with your local building department for current requirements.
ADUs & Granny Flats
Accessory dwelling unit rules and garage conversion permits.
No specific adus & granny flats rules found for Billings. Check with your local building department for current requirements.
Sheds & Outbuildings
Shed permits, setback limits, and outbuilding size rules.
No specific sheds & outbuildings rules found for Billings. Check with your local building department for current requirements.
Fire Pits & Outdoor Structures
Some RestrictionsFire pit placement, outdoor burning restrictions, and permits.
Outdoor Burning
Some RestrictionsOpen burning of yard waste in Billings requires a permit through the Billings Fire Department under BMC Chapter 15, with seasonal restrictions and Yellowstone County air-quality stage controls; recreational fires in approved containers are allowed without a permit.
Fire Pit Rules
Few RestrictionsBillings allows recreational backyard fire pits, chimineas, and patio fireplaces fueled by clean wood under BMC Chapter 15, provided the fire is contained, attended, and kept a safe distance from structures, fences, and combustible vegetation.
Landscaping & Tree Removal
Tree removal permits, heritage tree protections, and water rules.
No specific landscaping & tree removal rules found for Billings. Check with your local building department for current requirements.
General Permit Tips
When do you typically need a permit?
Most cities require permits for structural work, including fences over a certain height, pools, ADUs, and sheds above a size threshold. Even projects that seem minor can trigger permit requirements, so it is always best to check first.
How to apply for a building permit
Visit your local building department or their website. Most jurisdictions accept online applications. You will typically need a site plan, project description, and may need contractor information. Processing times vary from same-day for simple projects to several weeks for larger builds.
Common permit violations to avoid
Building without a permit, exceeding approved dimensions, and ignoring setback requirements are the most common violations. Penalties can include fines, required removal of the structure, and complications when selling your home.
Looking for rules beyond permits? View all ordinances we track for Billings.