Building certification performance has been on the research agenda, and studies from all over the world
present different results. Some authors state that the certified buildings are more efficient, while some
argue they are not. In Brazil, little is known about the performance of certified buildings, since relatively
few are the buildings actually certified, most of them from the private sector. This study analyzed the first
years of post-occupancy phase of a Brazilian commercial building, certified by LEED/gold level, version
2.2. Besides energy consumption, the research covered water consumption and the commitment of users'
in the adoption of sustainable practices and their perception of the certified building, as well. As main
results, the study points that: measured consumption are quite higher than predicted at the design,
however show a reduction trend over time; some of the credits scored due to design solution are not
effective during the post-occupancy; the majority of the interviewed users are satisfied with thermal and
lightning comfort and think that the certification promotes work quality.