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New Hampshire 811 rules

In New Hampshire you call Dig Safe System, Inc: at least 72 hours before excavation, not including Saturdays, Sundays and legal holidays. Ticket life: valid for 30 calendar days from confirmation of notification.

Advance notice before digging
At least 72 hours before excavation, not including Saturdays, Sundays and legal holidays.
Farthest ahead you can call
No more than 30 days before.
How long the ticket or marks last
Valid for 30 calendar days from confirmation of notification.
Tolerance zone (hand dig inside it)
Not confirmed in the law we read. Ask Dig Safe System, Inc.
White lining (premarking)
Yes, premark perimeter in white before notifying (exempt: continuous excavation over 100 ft, pole replacement within 5 ft).
The law
RSA 374:48-56 (374:51); NH Admin Rules Puc/En 800.

Good to know: You white-line before you call. Exceptions: continuous digs over 100 feet and pole swaps within 5 feet.

Call 811 from anywhere in New Hampshire to reach Dig Safe System, Inc, or file online at digsafe.com.

Running several digs at once?

TrackOver keeps each ticket number, markout date and expiry on the job it belongs to, and warns before a ticket runs out, so the crew in the hole isn't digging on a dead ticket.

Start free811 ticket trackingDig GuardFind dig work on the board

Where this comes from

Checked September 24, 2026 against the state's own statute or rule text. Rules change; confirm with the center before a big job.

Using TrackOver in New Hampshire? See excavation contractor software in New Hampshire.

Working as a sub in New Hampshire? How fast a GC has to pay you in New Hampshire.

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