O. Ahlborg & Sons is a general construction contractor located in Cranston, R.I. The company has expertise in the design and construction of commercial buildings, office complexes, schools, health care facilities, municipal buildings, retail and multi-residential complexes. Founded more than 75 years ago by Olaf Ahlborg, the company has grown from a specialized residential construction firm to an industry leader involved in all forms of construction delivery services including general contracting, construction management, fast track and design-build projects. The company builds projects throughout the United States. Its completed projects include: Rocky Hill School in East Greenwich, R.I.; Tamarisk Assisted Living Residence in Warwick, R.I.; and Providence Public Safety Complex in Providence, R.I.