New Hampshire is one of the clearer “yes, but here’s where” states: the DNCR rule actually lists the zones where detecting is permitted — beach shorelines, ball fields, playgrounds, near picnic areas — with a tidy 12-inch dig limit. A couple of historic spots are hard no’s. Here’s the detail.
At a glance
| State parks | Allowed* Detectors are permitted along beach shorelines and at athletic fields, playgrounds, and within 25 feet of picnic tables/pavilions; a special-use permit is needed elsewhere, and historic sites are off-limits. |
|---|---|
| State & public land | Restricted RSA Ch. 227-C reserves the state’s exclusive right to field investigations on state land; appropriating a historic resource without a permit is a misdemeanor. |
| Beaches | Depends State-park ocean beaches (e.g., Hampton) are permitted along the shoreline; digging is sand-beaches-only, holes filled, no deeper than 12 inches. Odiorne Point is off-limits. |
| Local & federal | Depends Town and municipal parks and school grounds set their own rules; get town or landowner permission. |
*Even where detecting is allowed, archaeological/historic sites are protected and you must fill holes and follow posted rules. Always confirm the current rule with the specific land manager.
Metal detecting in New Hampshire state parks
Under N.H. Admin. Code Res 7301.19, detectors are not permitted on Department of Natural and Cultural Resources (DNCR) properties unless otherwise stated or by special-use permit — but the rule affirmatively permits detecting “along the shoreline of beaches and at athletic fields, playgrounds, and within a 25-foot radius from picnic tables and pavilions.” It’s prohibited at state historic sites and natural areas (listed in Res 101.06) and specifically at Odiorne Point State Park. The digging rule (Res 7301.20) limits ground disturbance to sand beaches, with holes filled and no deeper than 12 inches.
Items found worth more than $50 are subject to state lost-and-found rules (Res 7301.27), and an individual park may override with “unless otherwise posted” signage.
New Hampshire’s antiquities law
RSA Chapter 227-C protects historic resources: RSA 227-C:7 reserves to the state the exclusive right to conduct field investigations that alter historic resources on state land or waters, and RSA 227-C:11 makes it a misdemeanor (up to $1,000 or 6 months) to appropriate, excavate, or alter a historic resource on state land without a permit.
Beaches, local rules & federal land
State-park ocean beaches such as Hampton allow detecting along the shoreline, subject to the fill-holes and 12-inch limits and “unless otherwise posted” signage; Odiorne Point is off-limits. Town and municipal parks and school grounds set their own rules, so get town or landowner permission first. See our national guide.
Sources
Official and statutory sources this page is based on (last verified July 2026):
Once you’ve confirmed where you’re allowed to hunt, LuckyFind helps you make the most of it — track your route on the map, log each find with its location, and remember exactly which spots you have permission for. Free for iPhone and Android.
Frequently Asked Questions
- Do you need a permit to detect on a New Hampshire state-park beach?
- Not for the permitted zones — Res 7301.19 allows detecting along the beach shoreline, at athletic fields, playgrounds, and within 25 feet of picnic tables and pavilions. A special-use permit is needed outside those areas, and historic sites are off-limits.
- How deep can you dig in New Hampshire?
- On sand beaches you may dig no deeper than 12 inches and must completely fill every hole before leaving (Res 7301.20). Ground disturbance is otherwise not allowed at state parks or historic sites without approval.
- Can you detect at Odiorne Point or other historic sites in New Hampshire?
- No — Res 7301.19 specifically bans metal detectors at Odiorne Point State Park and at the state historic sites and natural areas listed in Res 101.06.
Find more, remember where
Download LuckyFind — free for iPhone and Android — to track your routes, log your finds, and keep your permitted spots organized.
