Private property requires landowner permission. Public-land rules depend on the agency, location, resources and active closures, so check with the land manager before detecting.
The first question is who manages the ground. A public map or trailhead sign may not show every restriction, while private property requires permission from the owner or authorized manager.
| Land type | Permission check | Important limit |
|---|---|---|
| Private property | Obtain the owner’s permission and agree on access and finds | Do not assume permission to cross means permission to detect |
| National Park Service land | Do not detect; NPS rules prohibit visitor metal detector use | Archaeological resources and park property are protected |
| BLM-managed land | Check the local office, claim status, site restrictions and permitted methods | Rules vary by area; existing claims and protected sites have restrictions |
| State, county or city land | Check the relevant park or land manager | Local rules may require a permit or prohibit detecting |
On BLM-managed lands, the agency describes recreational prospecting with hand tools as possible in some settings, while existing mining claims require the claimholder’s permission and local restrictions still apply. NPS rules prohibit metal detector use in national parks outside specific authorization. These examples do not determine rules for another public parcel or land manager.
Before a visit, identify the exact parcel, contact the responsible office, check closures and confirm whether digging, removing objects or collecting is allowed. Ask about the permitted equipment, hours, reporting requirements and any restrictions on archaeological or historic areas. Keep written landowner permission when detecting on private land.
Use the metal detecting laws and permission guide for the wider rule checklist. Check first detector settings only after the site and equipment are allowed.
Sources
Common questions
Can I metal detect on public land?
Rules vary by agency and site. Check the managing office, local orders and any protected-area restrictions before detecting.
Do I need written permission on private land?
Get the landowner’s permission before searching and agree in advance how finds and disturbed ground will be handled.
Are metal detectors allowed in national parks?
The National Park Service prohibits metal detecting in national parks except authorized research or other specific authorization.