TriVista Real Estate | We are a purpose driven, mission focused, group of realtors committed to excellence and serving the expressed an unexpressed needs of our real estate clients. With decades of experience we have become the only concierge service agency in Newport Beach (and Orange County), who truly has the seller's best interest in mind. We sell houses in Orange County, Newport Beach, Costa Mesa, Huntington Beach, Newport Coast, Corona Del Mar, Laguna, Laguna Beach, Laguna Hills, Irvine.