125 E Sylvestris Dr, San Geronimo, CA

$2,999,999

Previous Next

4

Beds

5

Baths

6,248

Square feet

10.79

Acres

About 125 E Sylvestris Dr

Get ready for State Rock Ranch, an epic 10+ acre luxury estate in West Marin's San Geronimo Valley, tucked among towering redwoods. This isn't just a home, it's a lifestyle, a legacy, a total game-changer. Comprised of two parcels, this offering presents a rare opportunity to build a second residence and create a true private compound in one of Marin's most serene settings. Direct gate access to Giacomini Preserve, Cascade Canyon, Hunt Camp Fire Road, and MMWD trails leading to Mount Tam. Off-grid ready with 50+ solar panels, lead-acid batteries, dual propane generators, and lightly used PG&E 400 amp service. Fully self-sufficient with 3 wells, pressurized septic, Starlink, and Comcast. Private trails wind through the property, connecting to Marin's vast open space. Wildlife is abundant with deer, hawks, owls, coyotes, and more.A serpentine lined pond showcases California's state rock and unique natural beauty.The residence offers 4 beds, 5 baths, including 6,200 sq ft of living space with a flexible two-level layout ideal for multigenerational living or guests. Highlights include a glass-wrapped living room with stunning views of Roy's Redwoods, gourmet kitchen, theater room, and EV-ready garage with pre-wired lifts. Recent upgrades include black-trim windows, refinished deck, spray foam roof, and enhanced security.A rare chance to own unmatched privacy with expansion potential.

Features of 125 E Sylvestris Dr

MLS® # 326033463
Price $2,999,999
Bedrooms 4
Bathrooms 5.00
Full Baths 4
Half Baths 1
Square Footage 6,248
Acres 10.79
Year Built 1996
Type Residential
Sub-Type Single Family Residence
Style Contemporary, Mediterranean
Status Active

Community Information

Address 125 E Sylvestris Dr
Area San Geronimo Valley
City San Geronimo
County Marin
State CA
Zip Code 94963

Amenities

Utilities Cable Available, Cable Connected, Electric, Off Grid, Propane Tank Owned, Public, Solar, Underground Utilities
Features Balcony
Parking Spaces 14
Parking Detached, See Remarks
Garage Spaces 4
View Mountains, Panoramic, Valley
Has Pool Yes
Pool No

Interior

Heating Radiant Floor
Cooling Other
Fireplace No

Exterior

Lot Description Landscape Front, Secluded
Windows Skylight(s)
Roof Elastomeric, Foam
Construction Metal, Stucco
Foundation Raised

Listing Map

Request a Showing

Provide a valid email address.
When would you like to view this property?
Sotheby’s International Realty® is a registered trademark licensed to Sotheby’s International Realty Affiliates LLC. Each Office Is Independently Owned And Operated.

Listing courtesy of Peter Maselli of Coldwell Banker Realty

The information being provided by Bay Area Real Estate Information Services® is for consumers' personal, non-commercial use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing.

Copyright 2026, Bay Area Real Estate Information Services, Inc. All Right Reserved.

Listing information last updated on August 7th, 2026 at 9:35am CDT.