
Nicasio, CA 94946
A once-in-a-generation opportunity to own the storied Tomasini Ranch 440 extraordinary acres in the heart of West Marin offering unmatched privacy, sweeping natural beauty, and a legacy estate unlike any other. Set at the end of a private road, this remarkable property unfolds across rolling pastures, oak groves, open valleys, and dramatic ridgelines with breathtaking 360-degree views stretching from Mt. Tam to Tomales Bay. From nearly every vantage point, iconic West Marin landscapes and shimmering water views create a setting of rare serenity and scale. The jewel of the property is a custom-built 4-bedroom, 3-bath main residence perfectly positioned to capture panoramic vistas from every room. Designed with an open floor plan that seamlessly connects indoor and outdoor living, the home features custom tigerwood hardwood flooring, bespoke cabinetry, expansive decks and patios, and walls of glass framing the surrounding landscape. The luxurious primary suite offers stargazing through overhead skylights, while outside, a heated saltwater infinity pool seemingly disappears into the rolling hills beyond. Adding to the property's charm is the original 5-bedroom, 2-bathroom mid-century guest house, rich with timeless character and authentic design. A dramatic wall of windows frames water and hillside views, while original wood paneling, built-ins, and a double-sided stone fireplace evoke the warmth and simplicity of a bygone era. Thoughtfully positioned outdoor spaces include a sun-drenched front deck and a sheltered rear patio surrounded by Madrones, oaks, bays, and cedars fully immersing you in the beauty of the natural setting. Completing the estate is a 3,000-square-foot agricultural barn with lodging, ideal for ranch operations, creative pursuits, equipment storage, or extended guest accommodations.
Property is move-in ready.
The primary residence was custom-built in 2006 (18 years old), placing it squarely in the 'Good' category. It features high-end finishes like tigerwood hardwood flooring and bespoke cabinetry that appear well-maintained. While the property includes a dated mid-century guest house, the main estate is functional, move-in ready, and reflects the quality of its 10-20 year age bracket.
The property has a large lot size, which is more than 4 times of its living area. lot size in square feet = 19397704, living area = 6954.
Spanning 440 extraordinary acres in West Marin, this property offers unparalleled privacy and scale, featuring rolling pastures, oak groves, and dramatic ridgelines that are rare to find in a single holding.
The estate includes a custom-built main residence, a 5-bedroom mid-century guest house, and a 3,000-square-foot agricultural barn with lodging, providing exceptional versatility for multi-generational living or ranch operations.
Living area discrepancy between mls listing and other public or private record. mls listing living area = 6954, other record living area = 3977. Bedroom count discrepancy between mls listing and other public or private record. mls listing bedroom count = 9, other record bedroom count = 4.
Managing a 440-acre ranch with multiple large structures and agricultural facilities necessitates significant ongoing capital investment and labor-intensive upkeep.
Located at the end of a private road in rural Nicasio, the property offers extreme seclusion but requires a substantial commute to reach major metropolitan hubs, high-end retail, and essential services.
No exterior & parking available.
No sensitive facilities data found.
Oct 14, 2026
$7,995,000
$9,995,000
-20% Price Drop
Initial Listing
May 26, 2026
$9,995,000
Initial Listing
Nov 16, 2020
$39,000
Public Record