SOMERVILLE, MASS. — Upland Capital Corp. has purchased 212 Elm Street, an office and retail building in Somerville, from Paradigm Properties for $19.6 million. The four-story, 66,217-square-foot building was 100 percent leased at the time of sale. Tenants include Arrowstreet, Inc., Citizens Bank, Tibco and Powderhouse Productions. Tad Lee and Leigh Freudenheim of Meredith & Grew procured the buyer in the transaction. Lee and Freudenheim will continue to market the property, and Paradigm Properties will continue to manage it.