By law, excavators and contractors working in New York City must contact New York 811 at least 48 hours before beginning any digging or excavation work to ensure that underground utility lines are marked. For safety reasons, homeowners are also encouraged to call before digging on their property.
- Agency: New York 811
- Phone Number: 811 or (800) 272-4480
- Business Hours: 24 hours, 7 days a week
