ONX is the rare Tin City room with a real estate behind it. In 2004 the Olson family, lifelong entrepreneurs with farming in their blood, went looking for land in Paso Robles and found an idyllic property in the Templeton Gap. They planted what would grow into the 127-acre ONX Estate Vineyard, later added a vineyard in Willow Creek, and built their winemaking home and tasting room in Tin City. The result is a winery that pairs serious estate fruit and a deep sustainability ethic with the casual, walkable ease of the Tin City district.

A farming family, a Paso vision

ONX began with land. In 2004 Steve and Brenda Olson, lifelong entrepreneurs, began searching for the right property in the Paso Robles AVA. When they encountered an idyllic site in the Templeton Gap, they recognized its potential immediately and established what became the 127-acre ONX Estate Vineyard. The winery followed in 2005, and over time ONX found a permanent winemaking home and tasting room in Tin City and acquired a second vineyard, Kiler Canyon, in the Willow Creek District.

The family brings a deep heritage in farming to the project, practicing the old Swedish tradition of being self-sustained farmers, working the land carefully and for the long term. That ethic shows in the way ONX farms: the winery is a Certified Sustainable Winery and Vineyards, a meaningful credential that reflects real, audited practices in the vineyard and cellar rather than a marketing line. For the Olsons, growing the fruit well is the whole point, and the wine is the proof.

The Olsons practiced the old Swedish tradition of being self-sustained farmers, and that farming-first mindset still shapes everything ONX grows and makes.

Two estate vineyards, one Tin City room

ONX is unusual among Tin City tasting rooms because its wines come from its own estate vineyards rather than purchased fruit. The home vineyard sits in the Templeton Gap, the cooler corridor on the west side of Paso Robles where ocean air funnels through a literal gap in the coastal hills, moderating the heat and giving the wines freshness and lift. The Kiler Canyon vineyard lies in the Willow Creek District, a high-elevation, calcareous-soiled area prized for structured, mineral-driven reds. Between the two, ONX farms a genuinely varied set of sites.

The tasting room itself is in Tin City, the casual, industrial wine district just south of downtown Paso Robles that is home to more than twenty wineries. It is designed as a welcoming, unpretentious stop where visitors can explore current releases and limited library wines as part of a broader Paso wine day. You get the substance of a real, sustainably farmed estate with the easy, walkable convenience of Tin City, a combination not many wineries can offer.

The wines: estate-grown blends

ONX is known for blends, the art of bringing several grapes together into something more complete than any one of them alone. The estate plantings span Rhone varieties like Syrah, Grenache and Mourvedre and Bordeaux varieties such as Cabernet Sauvignon and Malbec, which gives the winemaking team a deep palette to work from across two distinct vineyard sites. The wines lean structured and savory, shaped by the cooler Templeton Gap and the calcareous Willow Creek ground.

Because the fruit is estate-grown and sustainably farmed, the wines carry a strong sense of place, and the library program means visitors can often taste older vintages alongside current releases to see how the wines evolve. A Current Release Tasting is an easy introduction, and the more in-depth experiences reward anyone who wants to dig into what these two vineyards can do.

What to pour it with

ONX estate blends, with their structure and savory edge, are built for the table. A Rhone-leaning blend loves grilled lamb, sausage, duck and herb-driven dishes, its pepper and dark fruit meeting the smoke and spice of the grill. A Bordeaux-leaning blend, with firmer tannin, is a classic with red meat: the tannin binds to protein and fat, so a ribeye or a rack of lamb tastes rounder while the wine cuts the richness of the plate.

Salt and fat are these wines best friends, which makes hard aged cheeses and a charcuterie board a reliable match at the bar, the salt rounding the tannin and lifting the fruit. The grill is your other ally, since char echoes the savory notes in the wine. Keep the most structured, tannic reds away from delicate white fish, where the tannin has nothing to grab and can turn bitter and metallic.

ONX Wines: common questions