A house detective is someone who is responsible for ensuring the safety and security of a building or establishment. Synonyms for this term can include security guard, building inspector, surveillance officer, inspector of buildings, or safety and security manager. These professionals are tasked with monitoring a building, identifying any potential threats to safety or security, and taking corrective measures to prevent such incidents from occurring. A house detective might also be referred to as a private investigator, private detective, or investigator of crimes. These synonyms suggest a more investigative element to the role, where the focus is on gathering evidence to identify and prevent potential criminal activity.