Rooted in the past, anchored in the future, and embraced by the rare feeling of being worlds away, this extraordinary architectural estate evokes a profound sense of permanence and belonging. Set on 4.76 private acres in the Knights Valley AVA, occupying the original...
Rooted in the past, anchored in the future, and embraced by the rare feeling of being worlds away, this extraordinary architectural estate evokes a profound sense of permanence and belonging. Set on 4.76 private acres in the Knights Valley AVA, occupying the original homestead site of Captain Franz, the 19th-century settler for whom Franz Valley is named, the 2019 residence blends striking design, timeless materials, exceptional craftsmanship, and thoughtfully engineered systems. Designed for seamless indoor-outdoor living, walls of glass open to resort-inspired grounds where pool, spa, fire, and gathering spaces unfold naturally across the landscape. Motorized pergolas, a fully equipped outdoor kitchen, and multiple fireplaces create a setting equally suited for quiet evenings and special occasions. Inside, walls of glass, concrete floors and walls, exposed steel, and estate-sourced wood create an environment of warmth and understated luxury distinguished by a rare level of craftsmanship. A dramatic great room serves as the heart of the home. The kitchen reflects the same commitment to craftsmanship, where custom walnut cabinetry milled from the estate itself, zinc cabinetry and countertops, and a premium Thermador appliance suite create a composition as functional as it is beautiful. Wrapped in glass and opening directly to the pool and outdoor living spaces, the main-level primary suite enjoys sweeping views and is complemented by a luxurious spa-like bath. Upstairs, two generously sized guest suites, each with its own bath, are thoughtfully separated by a family room, creating a private and inviting wing that balances connection and privacy. Surrounding the residence, a rare two-acre estate Malbec vineyard rooted in the volcanic soils of the Knights Valley AVA brings authenticity and romance to everyday living. Future flexibility was built into the estate, with a 5-bedroom approved septic system and utilities already in place for a potential ADU. While only 12 minutes from Calistoga, the estate, framed by vineyards, orchards, olive trees, and rolling hills, celebrates the beauty, rhythm, and traditions of Wine Country, completing a property defined by permanence, belonging, and the rare feeling of being worlds away.
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Sale and tax history for 8300 Franz Valley School Rd
Sale History
Tax History
Date
Event
Price
BAREIS #326049165
Sep 3, 2026
Price Changed
$3,695,000
$1,251/sq ft
Jun 20, 2026
Listed
$3,995,000
$1,353/sq ft
Public Records
Sep 24, 2010
Sold
$520,000
$176/sq ft
Public Records
Jan 20, 1988
Sold
$65,000
$22/sq ft
Year
Property tax
Land + Additions
Assessment*
2025
$21,288 (+1.9%)
$457,373 + $1,541,766
$1,999,139
2024
$20,888 (+1.8%)
$448,405 + $1,511,536
$1,959,941
2023
$20,520 (+4.1%)
$439,613 + $1,481,899
$1,921,512
2022
$19,721 (−3.7%)
$430,994 + $1,452,844
$1,883,838
2021
$20,487 (+70.7%)
$422,544 + $1,615,013
$2,037,557
2020
$12,002 (+1.3%)
$414,259 + $1,526,347
$1,940,606
2019
$11,851 (+180.3%)
$410,012 + $725,672
$1,135,684
2018
$4,228 (−31.4%)
$401,973 + $711,444
$1,113,417
2017
$6,166 (+3.9%)
$386,365 + $187,661
$574,026
2015
$5,937 (+1.7%)
$378,790 + $183,982
$562,772
2014
$5,839 (+0.2%)
$365,793 + $177,670
$543,463
2013
$5,830 (+2.9%)
$365,793 + $177,670
$543,463
2012
$5,666
$364,140 + $176,868
$541,008
Public record
Public record
Zoning
Permits
Beds
3
Baths
3.5
Stories
2
Lot width
—
Lot depth
—
Lot size
4.76 Acres
Year renovated
2019
Finished Sq. Ft.
2,953
Unfinished Sq. Ft.
—
Total Sq. Ft.
2,953
Year built
2018
Style
Single Family Residential
County
Sonoma County
APN
120150037000
Parking Spaces
—
Basement
—
Accessible
—
HOA Dues
—
Garage
—
Features
—
Last updated by owner on Aug 13, 2026.
DA B6 20
RC 100'
Diverse Agriculture B6 Combining District 20 Acres
DA: Enhances and protects land where soil, climate, and water conditions support farming but where small acreage intensive farming and part-time farming activities are predominant, and where farming may not be the principal occupation of the farmer; Implement the diverse agriculture land use category of the general plan and the policies of the Agricultural Resource Element.; B6: To specify residential density and/or minimum parcel or lot size for a particular parcel, lot or area.
Zone overlays
Permitted uses
Include but are not limited to:
Agriculture
Equestrian facility
Greenhouse / nursery
Day care facility
Housing-Group
Housing-Single unit
Theater / performing arts facility
Agriculture-Cropland
Park & open space
Timberland
Mar 1, 2023 • Final
Building permit with plan check
Electrical
Solar
Sep 30, 2019 • Final
Building permit with plan check
Complete the construction of a replacement home featuring covered porches and storage. Remove the basement from the project scope and change structural components from steel to wood.
Remodel
Permit history is from public records and may be incomplete or inaccurate. Redfin and its agents make no representations about the property condition or permit status. Buyers should independently verify all information.
Climate risks
7/10 Flood Factor
Estimated 71-79% chance of a flood reaching the building in the next 30 years
5/10 Fire Factor
4% chance of being in a wildfire in next 30 years
4/10 Heat Factor
7 days above 98° expected this year, 16 days in 30 years
1/10 Wind Factor
Minimal risk of severe winds over next 30 years
10/10 Air Factor
22 unhealthy days expected this year, 24 days in 30 years
Provided by First Street
Historical weather
Calistoga, CA • 94515
Average low and high temperatures (°F)
60
44
60
45
68
48
66
47
76
51
81
54
84
56
88
57
81
58
75
53
62
46
57
44
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Sun exposure
85/ 100
Very good sunlight
Sunscore
This home receives average direct sun exposure in Calistoga. There appears to be minimal shading by surrounding buildings, terrain, and vegetation.
8.6 hrs
4.7 hrs
JuneDecember
Provided by Shadowmap
Redfin Estimate for 8300 Franz Valley School Rd
We cannot show automated home-value estimates for this home.
Nearby homes have recently sold between $1,340,000 and $1,957,000.
Nearby comparable homes
The Redfin Estimate uses 6 recent nearby sales, priced between $1.3M to $2.0M.