How to Prevent Theft at Open Houses: Security Tips for Sellers & Agents (2026)

A series of thefts targeting luxury open houses on New York's Upper East Side underscores a critical vulnerability in the real estate sales process. Law enforcement sources reported a single individual stole approximately $40,000 in jewelry during property showings. This pattern highlights an urgent need for sellers and real estate agents to implement rigorous security protocols. Based on our experience assessment, the most effective strategy involves pre-screening attendees, securing all valuables, and maintaining constant supervision to significantly mitigate these risks.

Why Are Open Houses a Target for Theft?

An open house is inherently vulnerable because it allows numerous unknown individuals to enter a private property. As one industry professional noted, it can be a perfect environment for theft. The perpetrator in the Upper East Side cases allegedly posed as both a real estate agent and a lawyer, demonstrating how easily bad actors can blend in with legitimate buyers. The primary goal is to exploit the open and trusting atmosphere to steal high-value, portable items left in plain sight. Valuables like jewelry, watches, and small electronics are the most common targets. This incident is a reminder that security cannot be an afterthought when marketing a home.

What Practical Steps Can Sellers Take Before a Showing?

The responsibility for security is a shared effort between the homeowner and the listing agent. The most crucial step a seller can take is to remove all valuables from the premises entirely. If removal isn't possible, items should be locked in a secure safe that is bolted down. Do not rely on hiding places, as thieves are adept at searching drawers and closets quickly.

Additionally, sellers should:

• Create an inventory: Document serial numbers and take photographs of valuable items that remain in the home.
• Discuss security with your agent: Ensure you are aligned on the screening procedures that will be used for visitors.

What Security Protocols Should Real Estate Agents Implement?

Agents are on the front lines and must take proactive measures to protect their clients' property. The reported response from brokers in New York—including screening visitors at the door with a suspect's photo—is a direct example of risk management. Key protocols include:

• Mandatory Registration: Require every visitor to provide a government-issued ID and complete a registration form before entering. This creates a record of who was in the home.
• Constant Supervision: Agents should never allow visitors to roam the property unattended. It is essential to accompany small groups or have multiple agents present to monitor all areas.
• Controlled Access: Utilize a "one-in, one-out" policy during busy open houses to prevent overcrowding and maintain visibility.

The following table outlines a basic security checklist for agents conducting an open house:

How Can Technology Enhance Open House Security?

Modern technology offers additional layers of protection. While security cameras are often disabled during a listing to protect buyer privacy, temporary, overtly placed cameras can act as a powerful deterrent if the seller agrees. Furthermore, digital registration tools that run on a tablet can streamline the check-in process and create a more reliable digital record than paper sign-in sheets. These systems can also help agents pre-screen attendees by requiring valid contact information.

Conclusion: Vigilance is the Best Defense

While open houses are essential for marketing a property, they require a security-first mindset. The recent thefts demonstrate that even in the most affluent neighborhoods, the risk is real. The most predictable advice is to eliminate the opportunity for crime by combining physical preparation (removing valuables) with vigilant human oversight (agent supervision and guest screening). By implementing these structured protocols, sellers and agents can better protect property and ensure a safer selling environment for everyone involved.