68 Elm St. and 5 Parkwood Drive in Hopkinton have been sold for $31.5 million to U.S. Realty Advisors.

The acquisition and expansion financing was arranged by Jay Wagner of Cushman & Wakefield’s Equity, Debt and Structured Finance Practice, who worked in concert with the Cushman & Wakefield Capital Markets team. Cushman & Wakefield’s Capital Markets team of Robert E. Griffin, Jr., Edward Maher, and Matthew Pullen, together with leasing specialist J.R. McDonald, exclusively represented the seller, an affiliate of the RREEEF Funds, a real estate investment management firm.

The buildings collectively encompass 198,000 square feet (SF) of office/R&D space that serves as the headquarters of Caliper Life Sciences, a subsidiary of technology giant PerkinElmer, Inc. Expansion plans for the property will add 61,000 square feet to the campus including 40,000 square feet of office and 21,000 square feet of warehouse space.