Room climate is a fundamental factor for human wellbeing. Laws and standards define the ‘state of art for room climate parameters. To know this state of art helps us, to understand better the influence of environmental factors on human wellbeing. The development of a database with room climate factors defined in laws and standards is the starting point for this research and allows the comparison with other systems. Criteria for the database are structured in thermal comfort, indoor air quality, natural and artificial lighting and acoustics, all with a human centered perspective. The certification of building aims partly in a similar direction, namely to put a focus on building occupants comfort. TQB (Total Quality Building) is the certification system of the Austrian ÖGNB, the Austrian Society for Sustainable Building. This paper compares the legal requirements for offices buildings with the requirements of the TQB certification system and shows, if and why TQB has an additional benefit for the occupant of a building.