OCEANSIDE, CALIF. — Matthews Real Estate Investment Services has arranged the sale of Del Oro Marketplace, a shopping center located at 4181 Oceanside Blvd. in Oceanside. A San Diego-based private seller sold the property for $41.7 million. The property features 102,000 square feet of retail space. El Warner and Caitlin Zirpolo of Matthews Real Estate Investment Services, along with Reg Kobzi and Joel Wilson of CBRE, represented the seller in the transaction. The buyer was an undisclosed private investor.