Introducing Harbor Island, the most exclusive and prestigious address in Newport Beach! This is a rare and extraordinary opportunity for visionary developers and/or discerning owner-users to build a truly spectacular and breathtaking estate. Featuring an impressive 50' water frontage on a private, ultra-secure, gated island, this prized location is accessible only via a guarded bridge that seamlessly connects the island to the mainland. Indulge in the expansive, panoramic views of the shimmering, tranquil channel, and the majestic mountains in the background, all framed by stunning sunsets and twinkling city lights at night. This unparalleled site is an absolute gem and a once-in-a-lifetime offering. The oversized, lush, grassy backyard extends to a private dock equipped with a generous 60' boat slip, plus additional space for a second boat, jet ski, or any of your favorite luxury water toys. Harbor Island is a distinguished and exclusive enclave, a safe haven for some of the world's most influential and high-net-worth individuals. Comprising only 30 ultra-private residences, opportunities to own here are exceedingly rare. This very secluded location is in the heart of the peninsula and minutes away from Fashion Island, luxury shops and fine dining. Take advantage of the existing architectural plans to build an approximately 10,000 sq. ft. masterpiece, live in the current modest home, or design your own dream estate from the ground up!