PORTLAND, ORE. — Urban Renaissance Group and Boston-based Great Point Investors have acquired the Morgan Building in Portland for $27.5 million. The 8-story, 156-984-square-foot historic building is located at 720 S.W. Washington St. in the central business district. It is currently home to Morgan’s Alley, a 17,500-square-foot retail arcade. The sellers name was undisclosed.