Erwin Apartments, a multifamily property at 14740 Erwin St. in Van Nuys, has sold for $5.59 million, or $310,556 a unit, according to Warren Berzack, principal of Lee & Associates-LA North/Ventura, who represented the seller with Lee Principal Slavic Zlatkin. Both seller and buyer are private investors. Built in 2007, the property features 18 townhouses, each roughly 900 square feet with two bedrooms, two baths and balconies. “This property is non-rent-controlled with a lot of rental upside,” Berzack said in a statement. “Along with that, it is located in a very walkable neighborhood close to amenities, transportation and schools, making it a highly attractive investment.” Lee & Associates-LA North/Ventura has offices in Sherman Oaks and Calabasas.