SAN DIEGO, CALIF. — MetroGroup Realty Finance has provided $21.9 million permanent acquisition financing for a R&D/flex corporate campus located at 10307 and 10309 Pacific Center Court in San Diego. The seven-year loan features a 30-year amortization, fixed interest rest and a loan-to-purchase-price ratio of 69 percent. Colony Northstar sold the property to a Newport Beach, Calif.-based private investor for an undisclosed price. Quantum Design International, a global scientific instrumentation manufacturer and distributor, occupies the 103,830-square-foot property. Michael Hartel of Colliers International represented the buyer in the acquisition transaction.