O’Shaughnessy Estate Winery

Angwin, CA

Just beyond the town of Angwin, O’Shaughnessy Estate Winery occupies 120 acres of the prime Howell Mountain appellation at around 1,800 feet of elevation.  With 29 hillside acres planted to world-class Cabernet Sauvignon, they produced their first commercial vintage in 2002.  The beautiful rustic-contemporary Estate Winery building, designed by Michael Guthrie and completed in 2009, includes the crush pad and tank room, offices and tasting room, featuring a two-story steel and glass-encased wine library.  O’Shaughnessy maintains over 12,000 square feet of caves, including a tasting/event area, barrel storage, and the owners’ private wine cellar which when full contains about 15,000 bottles.

With the majority of the 120 acres left wild, the vineyards are conscientiously and sustainably farmed, and have received a Fish-friendly Farming rating for their protection of the Middle Fork Napa River watershed.

The landscape design makes the most of the limited level land not dedicated to vineyard or production.  To maintain continuity of design, landscape retaining and screen walls were veneered in stone to match the building, including planters with olive trees and Boston Ivy at the cave portal that help to cover the gunite cave shell and connect the cave to the landscape.  An outdoor fireplace and serving bar, vine covered shade pergola, and an entry procession through a grid of London Plane Trees and featuring a custom water element complete the design.


Architecture:  Michael Guthrie + CO

Landscape Architecture: Jack Chandler and Dave Roche, Jack Chandler & Associates

Construction: James Nolan Construction