At 16:32hrs units were dispatched to the reported commercial structure fire in the 13000 block of FM1092. With a column visible enroute Battalion 21 called a working and fire and went on scene 4-minutes later with heavy smoke from a row of office/warehouses with one obvious burn victim. Upon arrival of Truck 22 fire attack was initiated via Side C on multiple vehicles inside along with burning flammable liquids spilled from a cabinet. With Engine 24 stretching a back-up line and Engine 23 performing searches and checking for extension units achieved a quick knockdown as Ladder 2 and Tower 31 assisted in exposure occupancies with Battalion 1 as Division A and Battalion 31 as the Accountability Officer. Upon arrival of Fort Bend County Haz Mat to assess the flammable liquid spill and the patient transported to the Burn Unit in the TMC, the incident was placed under control awaiting Investigators. Upon completion of ventilation and assisting the Investigator all units returned to service at approximately 20:00hrs.