Occupants’ Perception on Green-rated Office Building in Surabaya, Indonesia

The research studied the correlation between green office building and occupants’ perception on the green–rated building. The purpose is to learn whether occupants perceive the green predicate in their daily activities, including in supporting indoor health and comfort, or the predicate just serves as formality. The selected green-office-building in Surabaya, Indonesia is Graha Pangeran. The building is in use for banking business. This research distributed questionnaire survey using Likert's scale. Questions were constructed using parameter of “Greenship” rating tools, a tool commonly used to certify green buildings in Indonesia. The tool used to assess physical condition of a building is now used to assess occupants’ perception. The direct adoption from an assessment tool to collect occupants’ perception is intended to learn any linear correlation between occupants’ response and building's physical conditions investigated during the certification process. Close-ended questions with 5 points Likert's scale method was employed. The questions were grouped into parameters as in the Greenship, namely appropriate site development, energy efficient, water conservation, building materials, indoor health and comfort, and management of built environment. The data collected shows only 51% agreed the office building is within green–rated, 28% was neutral and 21% perceived the building as a non-green. From the parameter of “health and comfort”, the perception of those experiencing comfort and neutral is in a balanced proportion between visible-audible and non-visible-audible parameters.