There is a name that appears on wine lists in restaurants you've been to, in tasting notes you've read, in the cellars of producers you already admire. It appears not as the winery name but as the vineyard designation — a small line of secondary type beneath the producer's label that serious wine drinkers have learned to look for.
That name is Sangiacomo.
More than 35 Sonoma wineries produce wines that carry the Sangiacomo Vineyards designation. They seek out this fruit because it is exceptional. The first wine to carry the Sangiacomo name was made in 1979 by Gundlach Bundschu. Since then, half a century of winemakers have come to the same conclusion: there is something about the way this family farms that produces fruit other people want to build their reputations on.
What most visitors to Sonoma never realize is that Sangiacomo makes their own wine now — and has for years. The farmers who built Sonoma's reputation are pouring for guests at their Home Ranch tasting room, two miles from Sonoma Plaza, and most wine tourists drive right past it without knowing what's there.
That is exactly the kind of story Wine Country Corner exists to tell.
A Hundred Years of One Family on One Land
Vittorio Sangiacomo was seventeen years old when he borrowed $200 from his mother and left Genoa, Italy for America. He arrived at Ellis Island in 1913 and traveled by train to San Francisco, where his father had already settled. Within a year he was earning a dollar a day working vegetable fields in Alameda County. Within a year after that he had repaid every cent of what he had borrowed.
In 1927, fourteen years after arriving in America, Vittorio purchased a 52-acre fruit tree ranch in Sonoma Valley. He called it Home Ranch. He married Maria Julia — she was 19, he was 32. They raised four children. They planted pears, peaches, prunes, and cherries. They made it work.
For decades the family farmed pears, becoming one of the largest pear growing operations in California. Then the market began to shift. In 1969, the family planted Green Acres — their first vineyard, 162 acres at the southern end of Sonoma Valley, where Sonoma Creek and Fowler Creek create a microclimate that would prove to be extraordinary. The conversion from pear orchards to vineyards was completed by 1981. Four years later, the pear market collapsed. The timing was not luck. It was vision.
Third Generation, 1,600 Acres, Four AVAs
Today Sangiacomo Family Wines is operated by the third generation: Mike, Steve, and Mia Sangiacomo Pucci. They grew up on the ranch. They learned to farm before they understood what they were learning. They have expanded what their grandparents started into something remarkable: 1,600 acres across fifteen vineyards in four American Viticultural Areas.
The vineyards are the asset. Steve Sangiacomo describes them as "family heirlooms — they all have a story, an emotional connection."
The Heritage Block at Green Acres — five acres of Old Wente Clone on St. George rootstock, planted in 1969, still producing — is the most storied five acres of grapevines in Sonoma Valley. The Four Siblings Chardonnay made from this block scored 97 points from Wine Enthusiast and 93 from Wine Spectator in 2023. These are not wines that need defending.
James MacPhail and the Winemaking Philosophy
Winemaker James MacPhail has a specific reputation in California wine. He is known for Pinot Noir that expresses place precisely — wine that doesn't try to be more than its vineyard. His philosophy at Sangiacomo: let the site tell the story.
The range of single-vineyard Chardonnays he produces gives wine drinkers something genuinely rare: the ability to taste the same winemaker's hand on the same varietal across different soils, microclimates, and vine ages. Side by side, El Novillero and Green Acres and Home Ranch tell completely different stories. That is the point.
The Roberts Road Vineyard Pinot Noir scored 96 points from Wine Enthusiast. The ViMaria is a reserve-level expression that commands attention. The 2025 Vin Gris of Pinot Noir, made from El Novillero Vineyard in Carneros in the traditional vin gris style, is made for Sonoma summers.
The Visit
The Sangiacomo tasting room sits on the Home Ranch, surrounded by the vineyards that Vittorio Sangiacomo purchased in 1927. You can see the rows from the tasting room. Tastings are by reservation — appointment only, which is exactly how it should be for a family operation that takes hospitality personally.
Club Famiglia is the wine club. The name means The Family, and the program reflects the Italian hospitality at the core of everything Sangiacomo has built: early access to allocations, exclusive releases, member tastings, events at the ranch.
Why WCC Features Sangiacomo
Wine Country Corner features boutique cave wineries making tiny quantities at elevation. It features family operations with three generations on a single Coombsville hillside. It features single-varietal Cabernet from Atlas Peak.
Sangiacomo is the farming dynasty. The family that built the agricultural foundation other people's reputations rest on, and then decided to express that foundation in bottles of their own. 97 points from Wine Enthusiast. Featured in Wine Spectator for the best Chardonnay vineyards in California. The farm that produced the fruit for wines you've already loved.
Two miles from Sonoma Plaza. Most wine tourists drive right past.
Don't be most wine tourists.
