Tank House Winery is at 12830 Harding Avenue, San Martin, CA 95046. Phone +1 (408) 386-6825. Wines: Zinfandel, Syrah, Cabernet Sauvignon, Merlot, Sauvignon Blanc and Chardonnay.
About
Tank House sits on land the Caviglia family has farmed since 1906. Al and Joe Caviglia started making wine in 2008, focusing on Zinfandel, Syrah, and Cabernet Sauvignon before expanding the lineup. The name comes from old California farm buildings that stored water tanks—a nod to their agricultural history. They pour Teroldego, an Italian red that's rare in California, alongside more familiar varieties like Chardonnay and Rosé. The lawn and patio offer views, and the tasting room operates weekends with a casual, family-run vibe. Prices stay reasonable—reviews consistently mention the value. Walk-ins are welcome, though you can call ahead. It's farming people making wine, not the other way around.
The Oxto Edit
Oxto AISouth County spot with lawn seating and century-old farming roots. They do the Santa Clara standards plus Teroldego, which almost nobody else bottles around here. Family-run, no pretense, actually affordable.
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Tank House Winery
12830 Harding Avenue
San Martin, CA 95046
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