Quaker Building-Philadelphia, PA Michael Barmash of Colliers International, along with Josh Nadel of MPN Realty, arranged the sale of the massive Quaker warehouse at 900-58 N. 9th St. for $17.25M to Post Brothers, paving the way for the real estate company to move forward with a roughly $100 million redevelopment of the structure. The developer has approvals to convert the 10-story, 380,000 s/f building into a mix of 350 apartments and 60,000 s/f of office space.