Abstract: A system for facilitating real estate (RE) unit rentals by intermediating landlords and potential tenants (PT) and enabling RE unit inspections and viewing without requiring on-site landlord representatives. The system includes a master-server facility including software modules and databases for executing system algorithms that enable and control communications between landlord communication devices, PT devices and apartment devices including a remote door lock, cameras and movement sensors. The door lock is remotely-operable and wirelessly controlled. The apartment devices include communication and monitoring devices temporarily installed in the RE units to enable RE unit inspections and viewing.