PHILADELPHIA, PA. — Marcus & Millichap has negotiated the sale of a five-building, 31-unit, multifamily portfolio in Philadelphia. The asset sold for $5.6 million or $182,258 per unit. Dana Newton and Mike Maxwell of Marcus & Millichap represented both the undisclosed seller and the buyer, a New York-based firm, in the transaction. The portfolio consists of 2105-2107 Green St., 2034 and 2036 Mt. Vernon St., 321 South 12th St., and five scattered condominiums.