The performance gap of buildings is commonly defined as the difference between the
performance value predicted in the design stage and that measured in the post-occupancy
stage. Knowledge about the performance gap of buildings is valuable in many aspects and
thus is a research subject drawing much attention. Important questions that should be asked
include:(1) Definition: what is the performance gap of buildings?(2) Magnitude: how large is
the performance gap of buildings?(3) Techniques: how to determine the performance gap of …