Prime 3.56-acre opportunity in the desirable Coombsville area, just minutes from Downtown Napa. This mostly level parcel is located within the 2020 U.S. Census Urban Area and may have potential for an SB 9 Urban Lot Split, subject to eligibility requirements and County approval. Buyer to independently investigate and verify subdivision, development, water, and land-use possibilities with Napa County. The property includes an approximately 2,000 sq ft main residence with owned solar, detached garage, and an additional approximately 700 sq ft dwelling with carport. Additional improvements include a large workshop/barn and separate six-stall horse barn with tack room. The property is served by two existing wells. With usable topography, substantial existing improvements, and close proximity to Downtown Napa, dining, wineries, and services, this property presents a compelling opportunity for investors, builders, or buyers seeking a private estate or family compound with potential development opportunities.