TABLE OF CONTENTS - The Professional Green Building Council

Theme C: Education and Market Transformation2. CHARACTERISATION OF THE BUILDINGS AND DATA2.1 Building StatisticsThis study includes data from 9 existing office buildings located in Sydney andCanberra. The buildings ranged from approximately 6,000 to 25,000 square metresof net lettable area, with a mix of medium and high rise buildings. The buildingages varied, with construction dates ranging from the 1970’s through to the early2000’s.Table 1: Distribution of sample buildings between states.___________________________________________________StateNumber of Samples___________________________________________Australian Capital Territory 3New South Wales 6___________________________________________________All buildings were observed in occupied and operating status. They included arange of original and refurbished plant at various stages of commercial life.Pre-audit energy efficiency had been assessed via conducting base buildingAustralian Building Greenhouse Ratings (ABGR). ABGR is an Australiangreenhouse performance rating tool, which assesses greenhouse ratings based uponreal building performance. As such, the inputs to an ABGR rating will includeenergy uses on the site and normalisation factors, such as climate data, hours ofoperation and floor area. The normalised emissions for the office are used toassign a rating on a 0-5 star scale.ABGR ratings have been designed to assess three core types of rating, a wholebuilding rating, which incorporates all energy consumption associated with theoffice building, a tenancy rating, which assesses all tenant light and powerassociated with the tenancies in the building, and base building ratings, whichassess the emissions associated with the provision of base building services, suchas HVAC, common area lighting, car parks and vertical transportation.588