- RARE FIND!!! +/- 2,780 sf Flex Building for Sale In Essington - Featuring 800 sf of office space - Reception area, bullpen, 2 private offices, storage room - 2,000 sf of warehouse featuring a 12' drive-in along the front of the building - 12-14' ceiling - Ample parking - Tremendous Signage - Mins away from the I-95 exit and close proximity to the Airport along the heavily traveled Rt. 291.