The Halter Ranch Story
Set along the westernmost boundaries of Paso Robles and surrounded by the wild Santa Lucia Mountain Range of California’s Central Coast, the Halter Ranch Estate is a 2,700-acre organic nature estate dedicated to land, art, and 100% organically farmed grapes. Envisioned by Swiss entrepreneur, philanthropist, and world-leading land conservationist Hansjörg Wyss, the estate is an homage to his mother, Alice Halter. It is a haven for the natural world to continue flourishing while it delivers exceptional, timeless wines.
Fully Organic Vineyards
All 237 acres of Estate vineyards are 100% CCOF certified organic. Twenty different grape varieties are planted on the steepest southern-facing slopes on our property, with ideal southern sun exposure and an elevation reaching 1,950 feet.
The certified organic Estate vineyards makes up only a small piece of the Halter Ranch estate. We are dedicated to preserving a diverse environment and mitigating the effects of a monoculture. With less than 10% of our property dedicated to farming and building development, the remainder is left to the natural landscape, which includes oak woodland and migratory wildlife corridors.
The Winery
Our production facility utilizes a multi-level gravity flow system that allows our winemaker to handle the fruit in the gentlest, most natural way possible while avoiding the pumping of stems and seeds. Integral to our facility’s sustainability are 20,000 square feet of wine caves, natural lighting, and nighttime air-cooling. A natural mass of hillside limestone, combined with the cave’s concrete walls, stabilizes our wine at the perfect 58º temperature and optimizes humidity for storage.
We’re steadfast believers in environmentally efficient practices—and we think you’ll love every sip of the finished product.
our winemaker
Kevin Sass
One of Paso Robles’ most renowned and respected winemakers, Kevin Sass, has been the winemaker behind the Adelaida district’s most famous wines for over 25 years. His craft focuses on phenolic analysis of the grapes, with the singular goal of making age-worthy wines of character and quality.
Legend has it that while an intern at JUSTIN, Kevin would visit the Halter Estate to harvest a few extra clusters of grapes for his garage and make his own Halter wine.
Today, he leads all vineyard and winery operations, including the oversight of our organic vineyard partnerships in Temecula and Texas.
Stewards of Central Coast Terroir
Our natural environment means everything. It’s not lost on us how reliant we are on the fruits of this land in Paso Robles, and we work every day to instill better land management practices that yield a better wine for you.
Energy Efficiency & Greenhouse Gas Reduction
Our solar array offsets every output of our winery operations and 58% of overall site operations. Additional solar array panels are under construction to offset 100% of overall site operations.
Oak Forest Preservation & Wildlife Conservation
Less than ten percent of our land is used for growing grapes, and that’s by design. The remainder is left for the world to enjoy: for guests to wander at their leisure, and for wildlife to flourish within. Ancient oak trees, wild manzanita, fragrant sagebrush—these are the colors on our natural canvas. What’s more: They’re home to a myriad of wildlife such as mountain lions, Tule elk, coyotes, and deer, to name a few.
Water Conservation
Custom rainwater harvesting systems on the roof, in the floors, and in drains around the exterior of our facility at Halter Ranch help retrieve every single ounce of water used in the winemaking process. That’s 100% of all output offset by natural rainwater collection. Every drop beyond our needs is used to fill our vineyard’s irrigation pond and irrigate vineyards. Three runoff ponds collect the water off the land, recharging the groundwater aquifers.
Organic Farming at Halter Ranch
We’re dedicated to ensuring this land is fruitful for generations to come. To yield a delicious crop of organic grapes year after year, we abide by strict organic farming practices throughout the estate. We abstain from the use of all synthetic pesticides and fertilizers, prioritizing instead the use of renewable resources and diligently conserving soil and water.
All 237 acres of the Halter Ranch vineyards are proudly certified organic by the California Certified Organic Farmers. Plus, our olive orchards hold the same prestigious Certified Organic designation.
Culinary Program
At Halter Ranch, the menu follows the seasons. Under the direction of Executive Chef Paul Arangorin, our two restaurants focus exclusively on seasonal, organic cuisine that celebrates Paso Robles and the Texas Hill Country's bounty. Each menu offers fresh ingredients from local farmers and ranchers who adhere to organic and regenerative farming practices.
Our wine, made from 100% organic grapes, should be enjoyed with great organic food from the local environs.
The History of Our Land
Halter Ranch Estate, first established in 2000, sits on an expansive 2,700-acre estate with a rich history dating back to the 1800s. The property has had a total of six owners in that time, including current proprietor Hansjörg Wyss.
1880
Mr. & Mrs. Edwin Smith purchased the property to pursue agricultural interests and built the Victorian Farmhouse as their primary residence. The house burned down in 1885 due to a chimney fire but was rebuilt immediately after. The ranch consisted of approximately 2,000 acres of farm and pastureland.
1893
Miles of stone fencing were built on the Smith Ranch by Bernardo Mastagni, originally from Italy. However, due to the ranch being in debt, Smith never paid Mastagni for his services. The stone wall still sits near the current day Halter Ranch Delivery Truck Entrance.
1943
There were three owners whose names were undocumented between the end of the Smith’s ownership of the ranch in 1905 and 1943. In 1943, new owners, the John F. MacGillivray family, purchased the property for $56,000. Of the 1,640 acres, 1,000 acres were for pasturing cattle and 600 acres for grain production.
1960
Through the ‘60s and ‘70s, the MacGillivray family hosted barbecues, offered membership to their private hunting club on the property, and provided lodging to bring in additional income.
1960
Through the ‘60s and ‘70s, the MacGillivray family hosted barbecues, offered membership to their private hunting club on the property, and provided lodging to bring in additional income.
1967
The MacGillivray’s, with the help of neighbors, built a small airstrip on the property to accommodate guests traveling from various parts of the state. The community was often invited to the ranch to participate in short landing contests, flower sack bombings, and air shows. On any given day, there were about 15 planes on the ranch.
1970
Ronald Reagan flew to the ranch in his Aero Commander after being invited by the Paso Robles Republican Women’s Club for a barbecue event at the ranch. This event launched Ronald Reagan’s re-election campaign and drew in families from all over San Luis Obispo County.
1970
The movie “Arachnophobia” was filmed at the ranch, featuring the Victorian Farmhouse.
1992
John F. MacGillivray’s son, Fraser, published the book Adelaida which detailed the history of the area and its original settlers.
2000
Hansjörg Wyss purchased 900 acres from the MacGillivray's and named it Halter Ranch after his mother, Alice Halter. His vision was to transform the property into a vineyard and winery that would use methods of farming that were not harmful to the environment while still creating superior wine.
2003
The first vintage of the flagship Bordeaux-style reserve blend was created. It was made to showcase not only the finest grapes from the estate vineyard, but also Halter Ranch’s commitment to preserving history while looking to the future of the property. The Ancestor wine is an homage to the ancient Quercus Agrifolia, more commonly known as Coast Live Oak, sitting on the property.
2006
Since the inception of Halter Ranch in the year 2000, there have been two snowstorms. They both occurred on President’s Day weekend – once in 2006 & then again in 2009.
2007
In September of 2007, Halter Ranch hosted its first annual Ancestor Dinner in the Historic Barn. This dinner celebrated their flagship reserve Bordeaux-style blend, the Ancestor. Guests were even able to taste the first-ever vintage of Ancestor from 2003.
2008
Halter Ranch was within the first group of wineries to be awarded the SIP Certification from the Central Coast Vineyard Team, after going through the initial pilot program. SIP Certified stands for “Sustainability in Practice,” which verified Halter Ranch had implemented sustainable vineyard and winemaking standards.
2009
Halter Ranch was within the first group of wineries to be awarded the SIP Certification from the Central Coast Vineyard Team, after going through the initial pilot program. SIP Certified stands for “Sustainability in Practice,” which verified Halter Ranch had implemented sustainable vineyard and winemaking standards.
2011
The production facility was built with a mind toward ultimate efficiency, cleanliness, and quality. It was constructed into the hillside to utilize a gravity-flow system for fruit processing, reducing electricity consumption, and water use. The building functions to collect all water which goes to our reclamation ponds and used for irrigation.
2012
The caves in the production facility were built into the hillside. To regulate temperature, fans open when the temperature gets low enough outside and pulls air in, while a fan on the other end opens and pushes air out. A cycling fan helps circulate air throughout the rest of the cave. It was designed to hold approximately 2,290 barrels which equals ~55,000 cases of wine!
2015
Halter Ranch completed its first harvest of the property’s 4-acre olive grove. Its first California Extra Virgin Olive Oil released was a Tuscan field blend, comprised of Frantoio, Leccino, Maurino, and Pendolino olives.
2016
Marked the opening of Halter Ranch’s new Tasting Room for guests to enjoy award-winning wines and stellar views. It is nestled between blocks of Cabernet Sauvignon, Syrah, and Grenache. The original Tasting Room was located in what is now the Member Garden area of the Victorian Farmhouse, and hosted guests from 2003 to 2016.
2017
The Halter Ranch Railroad carried on the tradition of the Swiss narrow gauge by paying homage to the trains from the birthplace of owner, Hansjörg Wyss. Halter Ranch utilizes three different trains, the Steam Locomotive, Krokodil, and Pullman Cars. All the trains are scale models of the historic trains that can still be seen and ridden when visiting Switzerland. The trains are approximately 1/3 scale of their full-sized counterparts.
2019
Member Garden officially opened. This space surrounds the Victorian Farmhouse. During the summertime, members can relax in nature while enjoying tastings or wine by the glass.
2020
Halter Ranch Olive Grove received Organic Certification from the California Certified Organic Farmers (CCOF). As of 2021, the grove has grown to 17 acres with Picual, Frantoio, Maurino, and Pendolino olive trees.
2020
The Halter Ranch Vineyard solar system was installed to offset 100% of winery operations and 58% of overall site operations. The property’s 1,026 solar panels are equivalent to almost 1 acre of solar.
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2021
Le Jardin du Chef (The Chef’s Garden) became CCOF organically certified and, since then, has developed into a thriving ecosystem. With the direction from Chef Paul Arangorin, seasonal fruits, vegetables, and flowers are harvested year-round for the Culinary Program.
2021
The Halter Ranch Airport was registered with the FAA as airport number 89CA. The airstrip officially opened to the public, and Wine Club Members were welcomed to fly in and enjoy the property as those did in years past.
2022
Named after proprietor Hansjörg Wyss' grandson, Thor's Mountain Cabernet was the first in our collector's series. Each year, the label will reflect another surface of this multifaceted family. Growing up near the Swiss Alps, the Wyss family shares a generational love and passion for the outdoors, especially mountains and the sport of snow-skiing.
2022
On November 14th, Halter Ranch breaks ground on new luxury tasting room in Texas Hill Country.
2023
Beginning in 2023 and into 2024, 75 acres of Cabernet Sauvignon and Picpoul Blanc grapevines will be planted to a trailblazing trellis and irrigation system, allowing sheep to graze year-round. With the addition of 75 acres, Halter Ranch will begin retrofitting its existing 200-acre trellis system. When complete, the 275-acre estate vineyard will be the first of its size to allow year-round sheep grazing.
2023
On August 17th, Halter Ranch announces its official organic certification granted by California’s Certified Organic Farmers (CCOF).
our proprietor
Hansjörg Wyss
While traversing the ridges of the Rocky Mountains as a young man during the 1950s, Swiss entrepreneur and philanthropist Hansjörg Wyss developed a lifelong love for America’s open lands and a passion for discovery. Following a highly successful career in life-saving medical science, Wyss has become one of the world’s leading conservationists and philanthropists, dedicated to repaying his fortune through philanthropic endeavors.
The Halter Ranch
Hansjoerg Wyss Charitable Trust
The owner of Halter Ranch, Hansjörg Wyss, formed the Halter Ranch / Hansjoerg Wyss Charitable Trust to ensure a strong future for the Central Coast and to give back to the San Luis Obispo community in which so many Halter Ranch employees live and work. The trust was created in 2021 with the goal to empower the changemakers and charitable organizations in our local community.
