Abstract: Various implementations include systems and methods for unlocking a door to a building on behalf of a tenant of the building that addresses the shortcomings of legacy telephone entry systems and allows for more efficient and safer management of building entry requests from third parties. In some implementations, the system taps into the legacy telephone entry systems to communicate with third parties seeking entry into the building. In some implementations, the system communicates with third party computing devices (e.g., stationary or mobile devices) to process entry requests. And, in some implementations, the system communicates entry preferences (or parameters) associated with a tenant with a door lock system to allow for entry during certain time windows or under certain conditions.