The Southwest College of Medical-Dental Assistants has purchased an office building in Van Nuys for $3.3 million. The two-story 13,500 square foot building at 14540 Haynes St. is about 50 years old and was renovated in 2000 and again in 2011. The seller of the property was 14540 Haynes LLC in Encino. The buyer was represented by Robert Stover, senior vice president with NAI Capital in Encino. Stover said the Van Nuys building fits the school’s expansion plans and market coverage. “The uniqueness of the property and its accessibility to amenities and their target market made it a perfect opportunity for my client to buy,” Stover said in a prepared statement.