Humidity zone boundaries are defined by differences in space use and are affected by differences in the ability of cooling control systems to manage humidity levels. Examples of zones that may have the same temperature settings as other zones but different humidity levels include kitchens, locker rooms, and swimming pools. Perform a thorough assessment of your building using mechanical drawings and floorplans and a full walkthrough to map out each of the zones and determine required locations for humidity sensors. The LEED-EBOM Reference Guide and ASHRAE 55-2004 provide useful guidelines for determining humidity zone boundaries in your building.