In 1978, Sobhan started the East West Property Development (Pvt) Ltd., now known as Bashundhara Housing. He currently leads group of enterprises consisting of nearly three dozen medium to large ventures steel and engineering, paper, tissue, cement, LP Gas, sanitary napkin, multi-paper, dredging, shipping, food and beverage, galvanised iron pipe, etc. He has an estimated wealth of about 50,000 crore BDT.