Just one-half block from the beach and directly across from Ocean Beach Dog Beach, 5157-59 Muir Avenue presents a rare opportunity to own a versatile coastal duplex in one of San Diego's most iconic neighborhoods. Whether you're seeking a strong rental asset, an owner-occupied property with income from the second unit, or a future development opportunity, this property offers multiple paths to maximize its value. Positioned on an RM-2-4 zoned lot, the property offers the potential to build up and capture sweeping Pacific Ocean views, creating the opportunity for an exceptional ocean-view coastal retreat. The existing two-unit configuration provides immediate flexibility and long-term upside for the savvy buyer. The front 1 bedroom, 1 bath cottage is currently operating as a sought-after vacation rental and features a modern kitchen, quartz countertops, stainless appliances, mini-split AC, built-in bedroom storage, and approximately 375 SF of additional front patio space for entertaining, dining al fresco, or an outdoor garden. The rear 2 bedroom, 1 bath residence features an updated kitchen, spacious backyard, and a private view deck with approximately 250 SF outdoor entertaining space and beautiful ocean views. Adding even more value are 2 dedicated parking spaces directly in front of the property, and laundry, a rare convenience in Ocean Beach. From the sand and surf to Newport Avenue's eclectic shops, restaurants and bars, Voltaire Street, and the beloved Ocean Beach farmers market, the location puts the best of the neighborhood right outside your door.