Barr Associates has renewed their lease at 300 Potash Hill Road, Tyngsboro, MA.  The 47,780 sq. ft. lease was extended for an additional 7 year term.  Barr has occupied the single-level office/flex building since 1999.  In addition to this location, Barr also owns and occupies two other buidings in Westford, MA totaling 75,000 sq. ft.

Founded in 1971, Barr Associates is the world's largest independent manufacturer of precision thin film coatings and optical filters, and has an unmatched heritage in the optical filter and coating business providing solutions and parts for some of the most challenging requirements.  Barr services the leading players and innovators in virtually every major market where optical filters or thin film coatings are enabling technologies or components.

Mark Stevens, Principal of ITRA / The Stevens Group, represented Barr in the transaction, providing real estate advisory services and assisting them in negotiating the lease extension.  The landlord, Franklin Equities LLC, represented themselves.

ITRA / The Stevens Group is a commercial real estate advisory firm located in Boston, MA, that specializes in exclusively representing corporate clients in the leasing acquisition and disposition of commercial real estate.  ITRA / The Stevens Group is an affiliate of the International Tenant Representative Alliance (ITRA) with offices in major cities around the world.