CREVE COEUR, MO. — NAI Desco has brokered the sale of Ballas Place in Creve Coeur for $5.5 million. The 78,252-square-foot office building is located at 425 N. New Ballas Road. Constructed in 1980, the property is 74 percent occupied by tenants such as Central Bank of St. Louis, Trileaf Corp., Brookdale Senior Living and Povaddo. Bamboo Equity Partners, the buyer, plans to invest $4 million in building upgrades over the next year. Plans call for the transformation of the two-story atrium into shared collaborative space. Carl Conceller and Stephen Gwinnup of NAI Desco represented the undisclosed seller. Intelica Commercial Real Estate represented Bamboo.