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.
Active under contract
Price cut: $60K (6/25)
$1,435,000
18900 Armstrong Woods Road, Guerneville, CA 95446
1beds
768sqft
Single Family Residence
Built in 2003
120 Acres Lot
$1,348,800 Zestimate®
$1,868/sqft
$-- HOA
What's special
Extensive forest trailsPremier view build siteGlass-walled pavilion guest residencePavilion guest residenceSecluded roadEstablished irrigation systemGated approach
- 98 days |
- 859 |
- 67 |
Zillow last checked:
Listing updated:
Listed by:
Todd Sheppard DRE #01314350 707-235-6870,
Sotheby's International Realty 707-935-2288,
Martin W Humphrey DRE #00218532 707-480-4803,
Healdsburg Sotheby's Internati
Source: BAREIS,MLS#: 326024933
Originating MLS: Sonoma
Facts & features
Interior
Bedrooms & bathrooms
- Bedrooms: 1
- Bathrooms: 1
- Full bathrooms: 1
Rooms
- Room types: Studio
Kitchen
- Level: Main
Heating
- Radiant
Cooling
- None
Appliances
- Included: Free-Standing Gas Oven, Free-Standing Refrigerator, Gas Water Heater, Microwave, Washer/Dryer Stacked
Features
- Flooring: Tile
- Basement: None
- Has fireplace: No
Interior area
- Total structure area: 768
- Total interior livable area: 768 sqft
Property
Parking
- Total spaces: 6
- Parking features: No Garage, Uncovered Parking Spaces 2+, Gravel
- Uncovered spaces: 6
Features
- Levels: One
- Stories: 1
- Has view: Yes
- View description: Forest, Hills, Trees/Woods
Lot
- Size: 120 Acres
- Features: Dead End, Other
Details
- Parcel number: 069030029000
- Special conditions: Standard
Construction
Type & style
- Home type: SingleFamily
- Architectural style: Chalet
- Property subtype: Single Family Residence
Materials
- Wood, Other
- Foundation: Slab
- Roof: Cement,Tile
Condition
- Year built: 2003
Utilities & green energy
- Sewer: Septic Connected, Septic Tank
- Water: Private, Well
- Utilities for property: Natural Gas Available, Natural Gas Connected, Public
Community & HOA
Community
- Security: Secured Access
HOA
- Has HOA: No
Location
- Region: Guerneville
Financial & listing details
- Price per square foot: $1,868/sqft
- Tax assessed value: $1,502,303
- Annual tax amount: $17,113
- Date on market: 3/25/2026
Estimated market value
$1,348,800
$1.28M - $1.42M
$2,199/mo
Price history
| Date | Event | Price |
|---|---|---|
| 7/7/2026 | Pending sale | $1,435,000$1,868/sqft |
Source: | ||
| 6/25/2026 | Price change | $1,435,000-4%$1,868/sqft |
Source: | ||
| 4/2/2026 | Listed for sale | $1,495,000+19.6%$1,947/sqft |
Source: | ||
| 3/30/2015 | Listing removed | $1,250,000$1,628/sqft |
Source: Artisan Sotheby's Int'l Realty - Sebastopol Report a problem | ||
| 3/29/2015 | Listed for sale | $1,250,000$1,628/sqft |
Source: Artisan Sotheby's Int'l Realty - Sebastopol Report a problem | ||
| 3/6/2015 | Sold | $1,250,000-16.7%$1,628/sqft |
Source: | ||
| 3/5/2015 | Listed for sale | $1,500,000$1,953/sqft |
Source: Healdsburg Sotheby's International Realty #21400126 Report a problem | ||
| 10/4/2014 | Listing removed | $1,500,000$1,953/sqft |
Source: Healdsburg Sotheby's International Realty #21400126 Report a problem | ||
| 5/28/2014 | Price change | $1,500,000-11.8%$1,953/sqft |
Source: Healdsburg Sotheby's International Realty #21400126 Report a problem | ||
| 1/7/2014 | Listed for sale | $1,700,000+243.4%$2,214/sqft |
Source: Healdsburg Sotheby's International Realty #21400126 Report a problem | ||
| 5/15/2001 | Sold | $495,000$645/sqft |
Source: Public Record Report a problem | ||
Public tax history
| Year | Property taxes | Tax assessment |
|---|---|---|
| 2025 | $17,113 +1.8% | $1,502,303 +2% |
| 2024 | $16,813 +2% | $1,472,847 +2% |
| 2023 | $16,482 +1.8% | $1,443,969 +2% |
| 2022 | $16,185 +0.9% | $1,415,657 +2% |
| 2021 | $16,047 +0.3% | $1,387,900 +1% |
| 2020 | $16,003 +2.2% | $1,373,670 +2% |
| 2019 | $15,663 +1.7% | $1,346,737 +2% |
| 2018 | $15,397 | $1,320,331 +2% |
| 2017 | -- | $1,294,443 +2% |
| 2016 | $14,156 | $1,269,062 +60.2% |
| 2015 | -- | $792,358 +2% |
| 2014 | -- | $776,837 +0.5% |
| 2013 | $857,924 | $773,327 +10% |
| 2012 | -- | $702,750 |
| 2011 | -- | $702,750 |
| 2010 | -- | $702,750 |
| 2009 | -- | $702,750 +1.9% |
| 2008 | -- | $689,473 +2% |
| 2007 | -- | $675,955 +2% |
| 2006 | -- | $662,702 +2% |
| 2005 | -- | $649,708 +2% |
| 2004 | -- | $636,969 +21.9% |
| 2003 | -- | $522,498 +3.5% |
| 2002 | -- | $504,900 +83.3% |
| 2000 | -- | $275,503 |
Find assessor info on the county website
Monthly payment
Est. payment$--/mo
Payment breakdown
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Climate risks
Neighborhood: 95446
Getting around
0 / 100
Car-DependentNearby schools
GreatSchools rating
- 4/10Guerneville Elementary SchoolGrades: K-8Distance: 3.1 mi
- 8/10Analy High SchoolGrades: 9-12Distance: 13.5 mi
Schools provided by the listing agent
- District: Guerneville
Source: BAREIS. This data may not be complete. We recommend contacting the local school district to confirm school assignments for this home.
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Local buyer's agents are ready to help
- California
- Sonoma County
- Guerneville
- 95446
- 18900 Armstrong Woods Road




