Computer software applications for mobile phones and handheld tablet computer devices, namely, software for interacting with buildings and building systems, namely, setting home location preferences, lighting control, temperature control, environmental control, accessing lighting information, accessing temperature information, accessing environmental information, accessing and providing environment feedback, accessing building maps and layout information, accessing filtered building maps and information, locking and unlocking doors, opening and closing doors, credentialing, automating lighting and temperature control, allowing use of a mobile device to emulate a credentialing badge for access and identification, setting and initiating automated actions within the building, elevator access and control, viewing elevator information including available accessible elevators and the location of elevators, wayfinding (accessing directions within the building), providing Point of Interest information and other information with respect to the building, navigating within the building, mapping and locating within the building, providing emergency information including accessing evacuation information, searching for and locating persons within the building, searching for and locating Points of Interest and other locations within the building, viewing occupancy and use schedule information for individual rooms, scheduling room and conference room availability and concierge services