This is the standard most properties aspire to, but never fully realize. 40 acre estate in Grass Valley offering luxury country living, privacy, and sustainable infrastructure in a premier Nevada County location. This gated estate features over 3,300 sqft and is designed for efficiency and long term livability with a 7kW grid tied solar system, geothermal HVAC for energy efficiency, on demand water heater, auto start whole house generator, EV charger and all underground utilities.This Grass Valley vineyard property includes two irrigated vineyards planted with Petite Syrah and Petite Verdot (approx. 2 acres), additional rows of red and white table grapes, a producing mini orchard, and established garden beds with volunteer vegetables. Water resources include high producing well, year round Little Wolf Creek running through the property and 1.5 miner's inches of NID irrigation available for additional agricultural use. The land is cross fenced and configured for vineyard operations, hobby farming, equestrian use, or livestock. Equestrian and utility improvements include a 1,700 sq ft barn with 5 stalls and tack room, 60 foot round pen, and enclosed RV and equipment parking with full hookups. A commercial grade asphalt driveway provides durability and access for trailers, equipment, and guest parking. Interior features are designed for both everyday living and entertaining with a custom kitchen featuring warming drawers, heated bathroom floors, wet bar, refrigerated wine room, and ceiling mounted big screen projector. The main living areas flow into an enclosed courtyard with pergola and fountains, creating seamless indoor outdoor living. Additional exterior amenities include a pool, expansive covered patio, and a private entry casita ideal for guests, multigenerational living, or income potential. The professionally designed landscape enhances usability, beauty, and overall property flow while maintaining the natural setting. Located adjacent to Naggiar Vineyard and Winery, known for its seasonal concerts and events, this property offers vineyard estate living, equestrian amenities, agricultural capability, and strong event or wedding venue potential. It also presents a rare opportunity for a boutique winery, short term rental, Airbnb retreat, wellness or yoga retreat, corporate retreat venue, hobby farm, equestrian training property, luxury rural retreat, or income producing estate in the Greater Sacramento areas of Grass Valley and Nevada City markets.