Ray Schnorr and Jeannine O'Brien, owners, farmers, and winemakers, began their journey with a simple landscaping idea—planting 10 Zinfandel vines alongside their home in Rancho Bernardo. They sourced the plants from Sonoma County, stored them in a hotel during a trade show in San Francisco, and planted them in the spring of 2004. A year later, as the vines thrived, the question arose: “What are you going to do with those grapes?” What started as a casual interest in wine evolved into a full-blown passion for winemaking. After acquiring the necessary equipment, building refrigerated storage, and eventually purchasing land for a vineyard, their amateur label, "Slippery Slope," was born.

During this time, Ray immersed himself in winemaking, taking classes at a local community college and online courses from UC Davis. He became active in the local home winemaking community, earning recognition and accolades in county and state winemaking competitions. Jeannine, too, became a winemaker, producing a gold medal-winning vintage. More recently, she passed the rigorous exam to become a Level 1 Sommelier in the Court of Masters.

In 2007, they acquired their property in Highland Valley and began construction on their winery and vineyard in 2009. Acknowledging the region’s rich history of grape growing, which spans over a century, they named their estate Highland Valley Vineyards and designed the winery in a 1920s craftsman style.

Their approach blends traditional winemaking techniques with modern technologies to craft wines of distinction and character. They specialize in producing bold red wines with full body, balanced fruit, and a rich finish. To complement their estate-grown grapes, they source fruit from San Diego (South Coast), Mexico, Paso Robles (Central Coast), Amador County (Sierra Foothills), Lodi, and Dry Creek Valley (Sonoma County).

As winemakers and farmers, Ray and Jeannine now oversee the full journey from earth to bottle, practicing sustainable farming to enhance fruit quality while minimizing environmental impact.

Valley Oak Winery derives its name from a majestic oak tree that has stood since 1967 in the front yard of the Ubick farmstead in Clovis. This volunteer tree continues to flourish on Ashlan Avenue, directly across from Clovis East High School. The Valley Oak logo represents the Ubick family’s legacy, local heritage, and enduring farming traditions.

The Ubick family has been cultivating grapes in Fresno County for over a century. Their first farm, established in 1916, is now part of the Fresno State farm school. Over the years, the family has expanded their agricultural pursuits, growing wine grapes, raisins, peaches, garlic, watermelons, pumpkins, onions, olives, oat hay, and raising cattle in Clovis, Conejo, Oleander, Caruthers, Fresno, Selma, Lone Star, and Sanger.

Building on their tradition of home winemaking, the Ubick family founded Ubick Vineyards in Clovis and released their first commercial vintage in 2008. They quickly gained recognition for producing small lots of exceptional and distinctive red wines. In 2017, the family established Valley Oak Winery LLC to produce and market wines under the Ubick Vineyards and other house labels.

Valley Oak Winery and its tasting room opened in 2017 at the new site of the Ubick Vineyards near Sanger, CA. The vineyard, established in 2014, features eight red wine varietals. By growing their own grapes, the Ubick family can oversee every aspect of winegrowing and production, striving to create wines that are fruit-forward and rich in unique aromas and flavors reflective of the vineyard and the vintage year.