One of the last premium buildable homesites in the Mount Helix area with potential for two detached primary residences under SB 9. This expansive 14,636-square-foot parcel offers a rare opportunity to create a custom estate, family compound, or multigenerational retreat in a proven luxury market, including the neighboring residence that recently sold for over $2.3 million. Enjoy a rare sense of privacy and open space with expansive undeveloped land surrounding the property and nearby Eucalyptus County Park, creating a peaceful country-estate setting rarely found so close to shopping, dining, schools, and freeway access. Significant development work has already been completed, including a dedicated 1-inch water lateral, existing ¾-inch water meter, and county-approved private improvement plans incorporating the private road and engineered sewer improvements. Parcel may allow up to two detached primary residences under SB 9; buyer to verify all development potential with the County of San Diego.