Can I use a metal detector?
Conditional: by default it's prohibited, only with prior DGPC authorisation. The basis is Law 121/99 and Law 107/2001 (cultural heritage). It's prohibited to use a detector to search for objects of historical, artistic, numismatic or archaeological value without DGPC authorisation. And a key point: you cannot keep archaeological finds — under Law 107/2001 they are State property. If you find something by chance, you have a duty to report it to the DGPC, suspend works and not conceal it. In classified zones or monuments, detecting is off-limits. The GNR and Maritime Police seize detectors on beaches and at archaeological sites. In short: it depends — you need authorisation.
📋 The rules
- Searching for valuable objects: only with DGPC authorisation
- Archaeological finds are State property
- Duty to report chance finds to the DGPC
- Detecting off-limits at classified sites
- GNR/Maritime Police seize detectors
🔓 Exceptions
- Licensed archaeologists may detect within the licence scope
- Non-heritage use (locating pipes, a lost item) isn't the targeted conduct
- A chance find isn't a crime; concealing or appropriating it is
⚠️ Penalties & fines
The fines in Law 121/99 are still set in escudos: for an individual, 500,000$ to 1,000,000$, i.e. about €2,494 to €4,988; for a company, about €7,482 to €44,892. There's also forfeiture of the detector and of any objects found. Beware a myth from Brazil: "finders keepers" or "50/50 with the landowner" — Brazil's "treasure find" rule (50%) doesn't apply; in Portugal, under Law 107/2001, archaeological objects belong to the State and any reward is discretionary. The authority is the DGPC, not Brazil's IPHAN. To use a detector: get DGPC authorisation, avoid sites and classified zones and report any find.
📎 Official sources
- Law 121/99 — use of metal detectors →
- Law 107/2001 — cultural heritage →
- DGPC — heritage and legislation →
❓ Frequently asked
Can I freely use a metal detector?
No. It's prohibited to use a metal detector to search for objects of historical, artistic, numismatic or archaeological value without prior DGPC authorisation, assessed by objectives, sites and scientific suitability. Without it, the use is an offence, with seizure of the equipment.
Can I keep what I find?
No, if it's archaeological heritage. Under Law 107/2001, objects of archaeological or historical value are State property, so you can't keep them. You have a duty to report the find to the DGPC, suspend any works and not move or conceal it. Appropriating the find is illegal.
And if I find something by chance?
A chance find, without a detector, isn't, in itself, an offence. What the law punishes is failing to report the find or appropriating it. So if you fortuitously find an object of possible historical value, you should report it to the DGPC, suspend works if applicable, and not conceal or sell it.
What's the fine for using a detector without authorisation?
The fines in Law 121/99 are still set in escudos. Converted, they run from about €2,494 to €4,988 for individuals, and about €7,482 to €44,892 for companies. There's also forfeiture of the detector and the objects found. Figures like "€500" circulating online are wrong.
Does "finders keepers" apply?
Not for heritage. In Portugal, unlike Brazil, the rule of splitting treasure 50/50 with the landowner doesn't apply. Archaeological objects are State property under Law 107/2001, and any reward is discretionary. The competent authority is the DGPC, not an entity like Brazil's IPHAN.
🔎 Common searches
What people search to land here:
- “metal detector portugal law”
- “dgpc detector authorisation”
- “archaeological finds state property”
- “metal detector beach seizure”
- “metal detector fine”
- “found treasure whose”