In the heart of Manhattan Beach’s coveted Gas Lamp District, designer Nicole Heininger of Est. Collective has crafted her most personal project yet—a refined, family-friendly sanctuary that fuses coastal elegance with bold, modern design. With a sunlit courtyard at its center, 515 Marine Avenue offers effortless indoor-outdoor living, luxurious natural materials, and thoughtful architecture by Laney LA—all within walking distance to schools, shops, and the beach. This 5-bedroom, 4.5-bath home is a rare blend of serene privacy, soulful detail, and sophisticated function.