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Founded in 1981, O'Brien Constructors is a general contractor that offers construction services to public and private sector clients. It provides services for hospitals, schools, wineries, hotels and industrial facilities. O'Brien Constructors offers preconstruction services that include reviewing designs, exploring alternate materials and methods, cost estimating and management, permitting, scheduling, sequencing and value engineering. Its construction services include coordinating and managing construction service teams, administering contracts, organizing weekly progress meetings, conducting on-site compliance reviews and analyzing claims. The company provides various postconstruction services, including expediting final completion and processing contract closeout documentation, as well as coordinating occupancy for completed facilities. O'Brien Constructors is located in Portland, Ore.