MichiganOffice NAI Farbman sells former United Airlines building in Detroit market August 15, 2018 Share on Facebook Share on Twitter Share on LinkedIn Share via email NAI Farbman recently negotiated the sale of the former United Airlines Building at 17501 Michigan Ave. in Southfield, Michigan. 17501 Michigan Ave Acquisitions LLC purchased the office building for $1.53 million. The property will now be known as the Dearborn Office Centre NAI Farbman associate broker Ali Haidar represented the buyer in this transaction. The seller was UA Investment Group LLC. The two-story, 35,800-square-foot building occupies 4.55 acres.