Final answer:
An agent conducting an open house should check in with the office or a 'buddy' every 30 minutes, as it is a standard safety practice and ensures that any issues can be addressed promptly.
Step-by-step explanation:
The frequency at which an agent conducting an open house should check in with the office or a 'buddy' is a guideline that can vary by agency or local real estate board recommendations. However, for safety reasons, a common best practice is for agents to check in every 30 minutes. This ensures that if there are any issues or emergencies, help can be sent in a timely manner. It also provides a regular update on the status of the open house to the office. If the open house is particularly busy, the on-site agent might be checking in more frequently with colleagues who may be helping or with any staff at the office coordinating the open house event. Though some may argue that an agent only needs to check in if there is an issue, regular check-ins can prevent issues from escalating and provide a measure of safety for the agent.