BOSTON — The National Consumer Law Center (NCLC) has purchased 22,500 square feet of office space at Seven Winthrop Square for $5.5 million from Seven Winthrop Square, LLC. The five-story office building totals 27,000 square feet. NCLC purchased the second through fifth floors of Seven Winthrop Square, located at the corner of Otis and Summer streets in Boston’s financial district. Occupancy for NCLC, which is relocating from its 15,000-square-foot leased office space at 77 Summer St. in Boston, is slated for second quarter 2008. Tom Robinson and Jim Belli of The Codman Company represented the buyer in the transaction, and the seller was represented in-house.