Rare 124.49-acre multi-building retreat, residential campus, or institutional property located in the rolling foothills of Calaveras County. Originally designed to support group living, education, counseling & recreation, this exceptional property offers a rare combination of residential improvements, extensive infrastructure & self-sustaining systems within a peaceful and private setting. The campus features three primary buildings totaling approximately 11,343 square feet, including a 5,036 SF Tea House residence & recreation facility, a 3,520 SF Main House, and a 2,787 SF Classroom/Staff Quarters building. Together, they provide multiple bedrooms, offices, classrooms, meeting spaces, commercial-style kitchen facilities, recreation areas & flexible living arrangements to accommodate a variety of residential or organizational needs. Designed for reliability & independence, the property is served by two wells, 3 gravity-fed water storage tanks, 2 engineered septic systems, owned solar arrays, backup generators capable of powering the entire facility, propane service, AT&T fiber optic internet, water filtration systems, and extensive security surveillance. Outdoor amenities include an illuminated basketball & multi-sport court, graded trails, seasonal pond, archery area, RC track, enclosed garden area, chicken coop, multiple parking areas, shop building w/220V service, storage buildings, and expansive Trex decking throughout several structures. The Tea House, constructed in 2016-2017, features a full kitchen with granite countertops, multiple bedrooms and offices, recreation rooms, handicap-accessible facilities, mini-split climate control systems, reverse osmosis water filtration, tankless water heating, & large gathering spaces. The Main House offers commercial-scale kitchen amenities, climate-controlled pantry storage, multiple bedrooms, offices, wraparound decking, and dual-zone HVAC. An exceptional opportunity for a retreat center, educational campus, wellness facility, group housing operation, nonprofit organization, event venue, or private family compound, all within convenient access to San Andreas and surrounding communities. The property is currently zoned A-1 (General Agriculture). Buyers should independently verify all zoning regulations, permitted uses, Conditional Use Permit requirements, occupancy limitations, development potential, and suitability for any intended future use with the Calaveras County Building and Planning Departments.