For smaller properties, especially senior properties, that may have to use 100% sampling, certain circumstances will skew the resulting UA up or down, e.g., residents spending weeks or months in a hospital, residents spending (colder) months with relatives, residents with medical conditions who need their apartments to be exceptionally warm, cold, or where they use medical equipment that uses a lot of energy. In most cases, the resident has not requested a reasonable accommodation to increase the UA.