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To request a Building Inspection email us or call us at 406.657.8270.
Building permits applications are submitted via the GoPost online portal. Residential and commercial roofing, siding, windows, and doors may be submitted via email.
The Building Division is on the Fourth floor of the Miller Building, 2825 3rd Avenue North, in downtown Billings. Parking available in the lot behind the building.
A building permit is required for almost any type of construction on private property including:
Some of the items that do not require a permit are:
In addition, certain construction activities in the public right of way may require permits.
-By law, most electrical and plumbing permits can only be issued to licensed electricians and licensed plumbers. -Certain permits are requested before the primary permit is ready (e.g., temporary use permits). -Some projects are divided among different contractors, each with responsibility for only certain aspects of the job. -Work in the right of way requires a licensed and bonded contractor. -Certain permits are administered by different city or county departments.
We also offer the opportunity for architects and designers to sit down with key City staff members to discuss the project prior to plan submittal.
Part of the plan review process is to examine submitted plans for conformance with all codes, laws, and ordinances. This includes all phases of construction including site, structural, architectural, plumbing, mechanical, and electrical drawings. The plumbing and electrical detail may be excluded on single-family residences provided the location of the mechanical equipment is shown. Commercial plans need to be stamped by a Montana-licensed architect or engineer. Handouts are available from the Building Division.
Fees are based on the valuation assigned to each individual project. On large commercial projects valuation may be determined by a competitive bid process. Other commercial and single family structures are assigned a value based on square footage. Remodels are determined by contract price or the estimated value of material and labor.
Once a complete plan has been submitted, and special issues have been addressed (i.e., variances, special reviews, subdivisions, etc.), the initial review takes: Residential (single-family and duplex): 4-7 business days Commercial - Minor: 2-4 weeks Commercial - Major: 3-6 weeks
Because building plans are submitted electronically, only one (1) set of plans is required.
City of Billings’ Building Codes were last adopted on September 1, 2022 per Administrative Order #150.A handout specifying each code and edition year is available at the Building Division front counter on the 4th floor of the Miller Building at 2825 3rd Avenue North.
The State of Montana governs the area outside the city limits. You may call (406) 841-2056 for additional information.
State of MT Building Permits
You will be notified via email as soon as plans have been reviewed by all departments and divisions. If you would like to check the status, enter the permit number at the following link.
In cases where curb, gutter, and sidewalk improvements are not appropriate at the time of development (e.g., gravel streets, no curbs adjacent to property, etc.), the City Engineer may accept an SID Waiver of Protest in lieu of construction.
Inside the city limits, call Jessica Fust, Floodplain Administrator (406) 657-8271.Outside the city limits, call Emergency and General Services at (406) 256-2775.
Contact a private surveyor. You can find a list of surveyors in the Yellow Pages. City staff is prohibited from surveying private property lines. It is also very important to know where a property's underground utility lines are located before starting a project. Please dial 811 or go to
While there are instances where a plan is not required, such as re-siding or re-roofing, many so-called "small jobs" are affected by building codes. The adding or deletion of a wall down the middle of a room can dramatically affect the existing and structural integrity of the building. A plan that clearly indicates the work to be done can avoid surprises and conflicts at the job site. Part of the building plan process should be knowing the location of a property's underground utility lines. Please dial 811 or go to callbeforeyoudig.org for more information.
The minimum opening area in accordance with the IRC section 310 is 5.7 square feet. Minimum opening height is 24 inches and the minimum opening width is 20 inches. The bottom sill height shall be no more than 44 inches from the floor. To obtain more information please call 657-8270.