Call 811 Call 811



Explore damage prevention information, local contacts and rules for safe digging in Michigan.

One Call Centers

811 or


3285 Lapeer West Road
Auburn Hills MI 48326


24 / 7

Advance Notice:

Not less than 72 hours and not more than 14 days
Number of days in advance of a digging project that you need to notify the one call center of your intent to dig.

Marks Valid:

21 days if digging is started within 14 days of dig start date
Defines the period of time the facility marks (paint, flags, stakes, etc.) are valid according to state law or practice.