There is little doubt that in certain markets flex office space is on fire. The sector has grown an average of 23% each year since 2010, according to a recent report by JLL. Last year alone it made up for nearly two-thirds of the country's office market occupancy gains. Not only that, there is still plenty of runway left for this asset type. JLL notes that right now, flex space inventory accounts for less than 5% of US office stock and that by 2030 that number will have skyrocketed to approximately 30% by 2030.