Get ready for State Rock Ranch, an epic 10+ acre luxury estate in West Marin's San Geronimo Valley, tucked among majestic Redwoods. This isn't just a home, it's a lifestyle, a legacy, a total game-changer. Off-grid ready with cutting-edge tech and private access to the Bay Area's premier trails. Key Features: Direct gate to Giacomini Preserve, Cascade Canyon, Hunt Camp Fire Road, and MMWD trails to Mount Tam. Solar-powered with 50+ panels, lead-acid batteries, dual propane generators, and barely-used PG&E 400 amp service. Self-sufficient with 3 wells, pressurized septic, Starlink, and Comcast. Private trails for hiking, biking, or horseback that tie into Marin's wild open spaces. Wildlife? Deer, hawks, coyotes, owls, even the occasional black bear. A serpentine-lined pond flaunts California's state rock and rare eco-vibes. The residence: 4 beds, 5 baths, 6200 sqft,flex two-level layout ideal for multigenerational living or VIP guests. Glass-wrapped living room with Roy's Redwoods views that'll stop you cold. Gourmet kitchen for culinary masterpieces. Theater room with sound that hits hard. EV-ready garage with pre-wired lifts for your car collection. Fresh upgrades: black-trim windows, refinished deck, spray foam roof, security. This is your shot at unmatched solitude!
For sale
Price cut: $260.1K (7/28)
$3,488,888
125 E Sylvestris Drive, San Geronimo, CA 94963
4beds
6,248sqft
Est.:
Single Family Residence
Built in 1996
10.79 Acres Lot
$3,354,600 Zestimate®
$558/sqft
$-- HOA
What's special
Ev-ready garageTheater roomGourmet kitchenTucked among majestic redwoodsLuxury estateSerpentine-lined pondFlex two-level layout
- 42 days
- on Zillow |
- 911 |
- 33 |
Zillow last checked: 7 hours ago
Listing updated: July 28, 2025 at 06:38am
Listed by:
Peter Maselli DRE #02054402 707-364-2391,
Coldwell Banker Realty 707-762-6611
Source: BAREIS,MLS#: 325064435
Originating MLS: Sonoma

Travel times
Tour with a buyer's agent
Tour with a buyer's agent
Facts & features
Interior
Bedrooms & bathrooms
- Bedrooms: 4
- Bathrooms: 5
- Full bathrooms: 4
- 1/2 bathrooms: 1
Primary bedroom
- Features: Closet, Sitting Area, Walk-In Closet 2+
Bedroom
- Level: Main
Primary bathroom
- Features: Double Vanity, Skylight/Solar Tube, Soaking Tub, Stone
Bathroom
- Level: Main
Dining room
- Level: Main
Family room
- Level: Main
Kitchen
- Features: Breakfast Area, Kitchen Island, Quartz Counter, Breakfast Nook
- Level: Main
Living room
- Level: Main
Heating
- Radiant Floor
Cooling
- Other
Appliances
- Included: Dishwasher, Double Oven, Gas Cooktop, Gas Plumbed, Microwave, Dryer, Washer
Features
- Cathedral Ceiling(s)
- Flooring: Tile
- Windows: Skylight(s)
- Has basement: No
- Has fireplace: No
Interior area
- Total structure area: 6,248
- Total interior livable area: 6,248 sqft
Video & virtual tour
Property
Parking
- Total spaces: 14
- Parking features: Detached, See Remarks, Paved
- Garage spaces: 4
- Uncovered spaces: 10
Features
- Levels: Two
- Stories: 2
- Patio & porch: Front Porch, Deck
- Exterior features: Balcony, Entry Gate
- Has spa: Yes
- Spa features: Private
- Fencing: Gate
- Has view: Yes
- View description: Mountain(s), Panoramic, Valley
Lot
- Size: 10.79 Acres
- Features: Landscape Front, Secluded
Details
- Parcel number: 16934102
- Special conditions: Offer As Is
Construction
Type & style
- Home type: SingleFamily
- Property subtype: Single Family Residence
Materials
- Roof: Elastomeric
Condition
- Year built: 1996
Utilities & green energy
- Electric: Battery Backup, 220 Volts, Off Grid
- Gas: Propane Tank Owned
- Sewer: Septic Tank
- Water: Well
- Utilities for property: Cable Available, Cable Connected, Electricity Connected, Propane, Public, Underground Utilities
Green energy
- Energy generation: Solar
Community & HOA
Community
- Security: See Remarks
HOA
- Has HOA: No
Location
- Region: San Geronimo
Financial & listing details
- Price per square foot: $558/sqft
- Tax assessed value: $2,226,337
- Date on market: 7/15/2025
- Electric utility on property: Yes
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