A singular opportunity to create a significant Wine Country estate on one of Sonoma's most coveted addresses. Set on approximately 4.44 acres midway along Castle Road, the property offers rare scale, privacy, and proximity to Sonoma Plaza in an irreplaceable Eastside setting. Castle Road is uniquely defined by its blend of larger estate properties, quiet Wine Country character, and exceptional proximity to town, with the road culminating at Bartholomew Park & Winery. The property is offered with an extensive body of planning and design work already completed, including full construction plans by Sutro Architects for a proposed estate encompassing approximately 10,000 square feet of conditioned space across a main residence, guest house, second dwelling unit, and pool house. The vision also includes a pool, tennis or sport court, agricultural pasture and barn, and thoughtfully considered landscape plans. Approved six bedroom septic designs, well and infrastructure planning, arborist work, archaeological study, topographic mapping, vendor information, reports, and the status of permit applications will convey with the sale. A remarkable opportunity to carry forward an established architectural vision or use the extensive work completed to date as the foundation for an entirely personal Sonoma estate. Rare acreage, exceptional proximity, and one of the most historic, coveted addresses in Sonoma.
Active
$5,500,000
1170 Castle Road, Sonoma, CA 95476
--beds
--baths
4.44Acres
Residential Lot
Built in ----
4.44 Acres Lot
$-- Zestimate®
$--/sqft
$-- HOA
What's special
Quiet wine country characterRare acreageEastside settingProperty offers rare scaleMidway along castle road
- 24 days
- 236
- 17
Zillow last checked:
Listing updated:
Listed by:
Kristie Eddy DRE #02095273 949-577-1717,
Golden Gate Sotheby's 707-255-0845
Source: BAREIS,MLS#: 326077503
Originating MLS: Napa
Facts & features
Property
Features
- Fencing: Partial
- Has view: Yes
- View description: Mountain(s), Pasture, Vineyard
Lot
- Size: 4.44 Acres
- Features: See Remarks
Details
- Parcel number: 127111054000
- Zoning description: See Remarks
- Special conditions: Standard
Utilities & green energy
- Electric: Electric TBD
- Sewer: See Remarks
- Water: See Remarks
- Utilities for property: See Remarks
Green energy
- Energy generation: None
Community & HOA
HOA
- Has HOA: No
Location
- Region: Sonoma
Financial & listing details
- Tax assessed value: $2,340,900
- Date on market: 9/25/2026
Estimated market value
Not available
Estimated sales range
Not available
Not available
Price history
| Date | Event | Price |
|---|---|---|
| 9/25/2026 | Listed for sale | $5,500,000+144.4% |
Source: | ||
| 5/3/2024 | Sold | $2,250,000-25% |
Source: Public Record Report a problem | ||
| 9/1/2022 | Sold | $3,000,000 |
Source: Public Record Report a problem | ||
Public tax history
| Year | Property taxes | Tax assessment |
|---|---|---|
| 2026 | -- | $2,340,900 +3245.1% |
| 2025 | $26,349 +1869.9% | $69,980 +2% |
| 2024 | $1,338 +1.4% | $68,608 +2% |
| 2023 | $1,319 +10.4% | $67,263 +2% |
| 2022 | $1,195 +0.7% | $65,945 +2% |
| 2021 | $1,187 -0.3% | $64,652 +1% |
| 2020 | $1,190 +1.9% | $63,990 +2% |
| 2019 | $1,168 +7.5% | $62,736 +2% |
| 2018 | $1,087 +9.7% | $61,506 -34.5% |
| 2017 | $991 -26.4% | $93,926 +2% |
| 2016 | $1,346 +1.8% | $92,085 +1.5% |
| 2015 | $1,322 | $90,702 +25.4% |
| 2001 | -- | $72,351 +2% |
| 2000 | -- | $70,932 |
Find assessor info on the county website
Monthly payment
Climate risks
Neighborhood: 95476
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