




18900 Armstrong Woods Road, Guerneville, CA, 95446
About This Home
A Private Redwood Botanical Estate Set beyond a gated approach at the end of a secluded road, this remarkable offering combines a pavilion guest residence, a globally sourced conifer collection, extensive forest trails, and a premier view estate building opportunity within a serene redwood landscape. The property unfolds within the Crombie Arboretum, a privately established and curated collection of rare, wild-origin conifers sourced from around the world. Developed over more than two decades and thoughtfully supported through its early years, the collection now stands as a mature and thriving botanical environment representing species from every continent where conifers naturally occur. A charming glass-walled pavilion guest residence is positioned within the landscape, offering an immediate connection to nature and a peaceful retreat immersed in forest surroundings. Extensive trails, maintained over decades, wind throughout the property beneath towering redwoods and mixed forest, inviting exploration and quiet reflection. An established irrigation system initially supported the curated plantings and ongoing stewardship of the land. In addition to the guest residence, the property features a premier view build site, offering the opportunity to design and create a legacy estate within this extraordinary natural setting. Access is provided via a private road through a protected forest corridor. Located just minutes from Guerneville and the Russian River, yet offering a profound sense of privacy and stillness, this is a rare offering where botanical significance, seclusion, and long-term vision come together. Shown by appointment ONLY.
Getting Around
Schools
Construction
Condition
- Year built: 2003
Materials
- Foundation: Slab
- Roof: Cement,Tile
- Construction materials: Wood,Other
Type & Style
- Home type: SingleFamily
- Architectural style: Chalet
- Property subType: Single Family Residence
Interior
Appliances
- Appliances included: Free-Standing Gas Oven,Free-Standing Refrigerator,Gas Water Heater,Microwave,Washer/Dryer Stacked
Basement
- Basement: None
Bedrooms & Bathrooms
- Bedrooms: 1
- Bathrooms: 1
- Full bathrooms: 1
Features
- Flooring: Tile
Heating & Cooling
- Heating features: Radiant
- Cooling features: None
Interior Area
- Total structure area: 768
- Total interior livable area: 768 sqft
Kitchen
- Level: Main
Property
Details
- Parcel number: 069030029000
- Special condition: Standard
Features
- Levels: One
- Stories: 1
- Has view: Yes
- View description: Forest,Hills,Trees/Woods
Lot
- Lot size: 120 Acres
- Features: Dead End,Other
Parking
- Total spaces: 6
- Parking features: No Garage,Uncovered Parking Spaces 2+,Gravel
- Has uncovered spaces: Yes
- Uncovered spaces: 6
Climate Risk is Financial Risk
Every home has a financial story beyond the listing price. Below, you’ll see the climate risks that could affect this property — and in Bills & Affordability, how those risks may influence repairs, insurance, utilities, and long-term value.
Biggest Threats for This Home
- Inland Flooding
- Earthquake
- Landslide
- Wildfire
How This Home’s Risks Compare
FEMA Declared Disasters in Sonoma County and California
Understanding the Costs
Financial advisors generally recommend spending no more than 30% of your gross household income on housing costs. In practice, many households stretch to 35% or beyond — especially in high-cost markets.
Estimated Costs Today
| Monthly | Annual | |
|---|---|---|
| Mortgage | $7,559 | $90,708 |
| Home Insurance * | $511 | $6,132 |
| Property Taxes | $968 | $11,616 |
| Electricity | $398 | $4,786 |
| Total | $9,436 | $113,232 |
Income You'd Need if You Spent...
California FAIR Plan Programs
How Costs Could Change Over Time
Climate risk is quickly impacting all of the major home ownership costs. Adjust the growth rates and percentage of income spent on housing below to see how your housing costs could change over the next 10 years — and what income you'd need to keep up.
Comparing Against the Market
Price Per Sq Ft
vs Other Active Listings
Avg $/sqft
vs Homes Sold Last Month
Median $/sqft
Current Market Trends
Median Price Per Square Foot
The median price per square foot of homes sold in this area each month. Compare this to this listing's price per square foot to gauge whether the home is priced in line with recent sales.
Historicals for This Listing
Zestimate History ($/sqft)
Price History
| Date | Event | Price |
|---|---|---|
| 2026-04-02 | Listed for sale | $1,495,000 |
| 2015-03-30 | Listing removed | $1,250,000 |
| 2015-03-29 | Listed for sale | $1,250,000 |
| 2015-03-06 | Sold | $1,250,000 |
| 2015-03-05 | Listed for sale | $1,500,000 |
| 2014-10-04 | Listing removed | $1,500,000 |
| 2014-05-28 | Price change | $1,500,000 |
| 2014-01-07 | Listed for sale | $1,700,000 |
| 2001-05-15 | Sold | $495,000 |
