The City of Melbourne initiated an office retrofit program in 2008: the 1200 Buildings Program, which aimed to reduce total building related greenhouse gas emissions in the Central Business District (CBD). Given that it is estimated that 87 percent of buildings we will have in 2050 are already built (based on current building rates) (Kelly, 2008), retrofit is vital to mitigate the impacts of climate change and global warming. City authorities must lead by promoting and incentivising sustainable building adaptation. Following the 2011 and 2013 City of Melbourne 1200 Buildings Melbourne Retrofit Survey, this chapter analyses data to ascertain the patterns of retrofit as the city transitions to low carbon. Based on earlier studies of 7,393 Melbourne office buildings retrofits from 1998 to 2008 and 1,453 retrofits from 2009 to 2011, this chapter investigates building attributes previously found to be important and provides further insight into retrofit trends in the Melbourne office market, the lessons of which may be transferable.