Residential buildings are usually designed to withstand earthquake damage through their elastic and plastic deformations. The damage causes the buildings to be unoccupiable for a period of time, called the downtime. This report introduces a methodology to predict the downtime of buildings given an earthquake through the use of Fuzzy logic. Generally, the downtime can be divided into three main components: downtime due to the actual damage (DT1); downtime due to rational and irrational delays (DT2); and downtime due to utilities disruption (DT3). DT1 is evaluated by relating the building damageability of the building’s components to pre-defined repair times. A rapid visual screening questionnaire form has been designed to acquire information about the analyzed building.