4375 Sweeney Rd
Lompoc, CA 93436 Outer Lompoc/Santa Ynez

Introducing Sweeney Canyon Riverside Estate, a Mediterranean-inspired masterpiece set on approximately 49 acres with 1,400 feet of Santa Ynez River frontage in the highly coveted Sta. Rita Hills AVA, home to world-renowned 94+ point Chardonnay and Pinot Noir vineyards.
Poised for completion, this unfinished residence spans roughly 14,423 square feet across four levels connected by an elevator shaft. Built in 2012 with substantial steel and I-beam construction, the estate was designed for permanence, scale, and timeless architectural appeal. Framed, plumbed, and ducted throughout, the structure is ready for its final touches under an active building permit, offering the rare chance for a discerning buyer to finish an extraordinary home to their exact vision.
The design features a grand two-story foyer, multiple indoor and outdoor entertaining terraces, seven bedrooms, six full baths, and three half baths, along with a 5,000-square-foot daylight basement featuring roll-up doors and center floor drains, perfect for a collector’s showroom, wine storage, or wellness retreat.
Nestled among rolling hills with sweeping valley views, Sweeney Canyon Riverside Estate provides exceptional privacy and immense potential. Its location within the Sta. Rita Hills AVA supports a variety of agricultural or hospitality ventures, now further enabled by the recently completed fire department-approved access road and eligibility under the Santa Barbara County Agricultural Enterprise Ordinance (adopted January 2025).
Formerly home to the acclaimed Sweeney Canyon Vineyard, this site offers approximately 35 acres of usable terrain suitable for vineyard replanting, orchards, equestrian use, or private gardens. With two wells, a shared 30,000-gallon cistern, and abundant natural beauty along the riverfront, this property seamlessly combines privacy, function, serenity, and investment potential.
Set within the heart of Santa Ynez Valley wine country, Sweeney Canyon Riverside Estate is more than a property. It is an opportunity to craft a legacy destination defined by luxury, seclusion, and the essence of California’s premier viticultural landscape.