Grading, Drainage & Erosion Permits

Purpose
  • To control the quantity and quality of storm water runoff
  • Provide minimum standards for site grading and control of storm water
Permits Required
For any new buildings where the grade of the lot is altered more than three feet. The exception is for new single family residences where the original slope is less than 5%. These permits are governed by Missoula Municipal Code 15.65.

Expiration Date
Permits expire if work is not started within 180 days of issuance.

Questions
Contact Development Services at 406-552-6630.