Concepts and technologies are disclosed herein for detecting presence using a presence sensor network. In some embodiments, a computer executing a presence service generates a user interface for display at a user device. The user interface can include a control that, when selected, generates room data defining a monitored location. The computer can obtain sensor identifier data that identifies a presence sensor located at the monitored location and a location of the presence sensor at the monitored location. The computer can provide the user interface to the user device to obtain the room data and obtain the room data. The computer also can store the room data and the sensor identifier data.