The ongoing coronavirus pandemic caused the whole world to shut down; people were told to stay at home and only leave for essentials. This meant businesses were forced to re-position their working spaces, most of which needed to be working from home. In 2017, Manchester added 1,509,096 square feet of office space, and in 2018, we saw a further increase of 2,070,897 square feet, a rise of 37% (Construction index, 2019). Since March 2020, most of this office space has been unused and may continue to be underutilised in the future. As we get used to the ‘new normal’, Jes Staley, the chief executive of Barclays, has suggested that piling 7000 employees into a tall building ‘may be a thing of the past’ (The Guardian, The coronavirus pandemic is accelerating a digitally driven trend that was already in train. We need to plan for the downsides [Online]. Available from: https://www.theguardian.com/commentisfree/2020/aug/04/the-guardian-view-on-empty-offices-goodbye-to-all-that . Accessed 10 Feb 2021, 2020). With the built environment contributing to 39% of all carbon emissions in the world (WGBC, The building and construction sector can reach net zero carbon emissions by 2050 [Online]. Available from: https://www.worldgbc.org/news-media/WorldGBC-embodied-carbon-report-published . Accessed 11 Feb 2021, 2019), instead of new construction projects, would redeveloping unused office space reduce this percentage? This research paper identifies the most sustainable working environment and how underused office spaces can be adapted by looking at the design of office spaces in Class A2 and B1. In order to collate data for this research, a convergent mixed methods approach was used to answer the research questions. The results conclude that it is more social and environmentally sustainable for employees to have the choice whether to work from home; offices should be repurposed to relieve the housing crisis and reduce the impact the built environment has on CO2 emissions.