Understanding Section 6-402: Trespass on Posted Property (Maryland)
In Maryland, trespassing isn’t just a property concern — it’s a criminal offense. Put simply, Section 6-402 of the Maryland Criminal Law makes it illegal to enter or remain on private property that’s clearly marked against trespassing by either:
- Signs posted where they can reasonably be seen, or
- Purple paint marks on trees or posts that meet Maryland Department of Natural Resources standards.
Moreover, these markings must appear at road entrances and along public edges of the property — such as adjacent roads, waterways, or neighboring land. The law does not require a fence, gate, or verbal notice; proper signage or purple paint alone is sufficient to make unauthorized entry a criminal act.
Why This Matters to Surveillance Work
At AIP Investigations, many surveillance operations occur near private homes, rural lots, or commercial properties. While it’s lawful to observe from a public vantage point, stepping even a single foot onto posted property without permission could result in a misdemeanor — and jeopardize the entire investigation. To stay compliant and effective, we plan each assignment with legal boundaries in mind. For a full overview of what we offer, see our investigative services.
Criminal Penalties for Trespassing in Maryland
To clarify the stakes, Maryland law imposes the following penalties for trespass on posted property:
- First offense: Up to 90 days in jail and/or a $500 fine
- Second offense (within 2 years): Up to 6 months in jail and/or a $1,000 fine
- Third or more (within 2 years): Up to 1 year in jail and/or a $2,500 fine
Clearly, these are not slap-on-the-wrist penalties — they can impact your case, your reputation, and your legal standing.
Our Approach: Lawful, Professional, Reliable
Because details matter, we don’t take shortcuts. Before any surveillance, we evaluate legal access points, confirm signage, and check for purple-paint boundary markers. Then, we determine the limits of public versus private property. If the subject is on land posted against entry, we maintain a lawful distance and use long-range equipment where appropriate.
In addition, we routinely review zoning maps, survey lines, and satellite overlays (e.g., Google Earth) to avoid assumptions. As a result, the information we collect is positioned to stand up in court — protecting both you and your investigator from unnecessary risk.
Why It Matters to You
When you hire a private investigator in Maryland, you want someone who knows the law, respects boundaries, and delivers usable results without crossing the line. AIP Investigations is fully licensed and insured in Maryland, and we go the extra mile to produce evidence that’s both powerful and legally sound.
Talk to a Maryland Investigator
Ready to move forward with a compliant surveillance plan? Contact AIP Investigations today or explore our full list of services to see how we can help.
📞 Need a lawful surveillance investigator near Hagerstown or Boonsboro? Let’s discuss a strategy that holds up in court — contact us here.
