6591 Black Rail Road presents a flexible development opportunity in Coastal North County San Diego. Situated on approximately 1.8 acres in Carlsbad, the property is zoned R-1 (Single-Family Residential) and is currently unentitled, offering potential for a small subdivision or a private family compound. It falls within the well-regarded Carlsbad Unified School District, combining accessibility with a peaceful setting. Enjoy close proximity to world-class resorts, golf courses, fine dining, spas, and the Carlsbad Premium Outlets. With easy access to I-5 and the Carlsbad Train Station, and just minutes from the beach, this prime location offers the best of coastal living and connectivity.