MARIETTA, GA. — Atlanta-based SDM Partners has purchased Sandy Plains Business Park, a 167,329-square-foot office/flex business park in Marietta, a northwest suburb of Atlanta. SDM purchased the three-building asset from an unnamed global investment manager. The property was 94 percent leased at the time of the sale. The Bank of North Georgia, represented internally by Mark Hancock, provided acquisition financing, and Rooker Properties provided equity financing. Colliers International’s Atlanta office will provide leasing and property management services at the business park. Matt Tritschler of Avison Young represented the seller in the transaction.