PHILADELPHIA — Marcus & Millichap has negotiated the sale of a 4,568-square-foot mixed-use property in Philadelphia. The building, which is located at 262 S. 16th St., sold for $1.2 million or approximately $279.11 per square foot. Lawrence Gariano, Matthew Bess and Mark Taylor of Marcus & Millichap represented the seller, a private investor, in the transaction. The buyer was a limited liability company. The property is located two blocks east of Philadelphia’s Rittenhouse Square.