Any construction work where the grade of the lot or parcel is altered more than three feet requires a Grading, Drainage and Erosion Permit, as governed by Ordinance 3580 – MMC 13.27, to be submitted to City of Missoula Development Services for review. Exclusions may apply where the site's original slope is less than 5%. Grading, drainage, and hillside standards for slopes greater than 5% are listed in the Residential Site Plan and Commercial Site Plan checklists. If you require assistance contact Development Services at 406-552-6635.
Any construction activity that results in disturbance of one acre or greater total land area requires additional permit coverage. This total disturbance may include any clearing, excavating, grading, stockpiling earth materials, placement or removal of earth material performed during the construction project. If so, the construction activity’s owner or operator is required to follow the below steps: