8435 Franz Valley School Rd is a 2,856 square foot house on a 0.6 acre lot with 4 bedrooms and 3 bathrooms. Based on Redfin's Calistoga data, we estimate the home's value is $1,239,760.
Single-familyProperty Type
1994Year Built
0.6 acresLot Size
$434Est. Price/Sq.Ft.
Source:Public Records
Redfin Estimate
$1,239,760
$10K since September
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 1.8% lower than the average sale price ($1.26M) of 6 comparable homes.
As the MLS and public records start to fill up, we'll list the details here.
Year
Property tax
Land + Additions
Assessment*
2025
$4,943 (+1.9%)
$5,891 + $462,197
$468,088
2024
$4,849 (+1.8%)
$5,776 + $453,135
$458,911
2023
$4,762 (+4.1%)
$5,663 + $444,250
$449,913
2022
$4,574 (+3.2%)
$5,552 + $435,540
$441,092
2021
$4,434 (+1.1%)
$5,444 + $427,000
$432,444
2020
$4,386 (+1.3%)
$5,338 + $418,628
$423,966
2019
$4,329 (+1.4%)
$5,284 + $414,336
$419,620
2018
$4,271 (+2.1%)
$5,181 + $406,212
$411,393
2017
$4,184 (+4.1%)
$4,981 + $390,440
$395,421
2015
$4,021 (+1.7%)
$4,884 + $382,785
$387,669
2014
$3,953 (+0.2%)
$4,717 + $369,651
$374,368
2013
$3,947 (+2.9%)
$4,717 + $369,651
$374,368
2012
$3,834 (+4.7%)
$4,696 + $367,981
$372,677
2011
$3,663 (+1.6%)
$4,604 + $360,766
$365,370
2010
$3,604 (−1.2%)
$4,514 + $353,693
$358,207
2009
$3,648 (+2.2%)
$4,481 + $351,050
$355,531
2007
$3,569
$4,404 + $344,985
$349,389
Tax history for 8435 Franz Valley School Rd
Year
Property tax
Land + Additions
Assessment*
2025
$4,943 (+1.9%)
$5,891 + $462,197
$468,088
2024
$4,849 (+1.8%)
$5,776 + $453,135
$458,911
2023
$4,762 (+4.1%)
$5,663 + $444,250
$449,913
2022
$4,574 (+3.2%)
$5,552 + $435,540
$441,092
2021
$4,434 (+1.1%)
$5,444 + $427,000
$432,444
2020
$4,386 (+1.3%)
$5,338 + $418,628
$423,966
2019
$4,329 (+1.4%)
$5,284 + $414,336
$419,620
2018
$4,271 (+2.1%)
$5,181 + $406,212
$411,393
2017
$4,184 (+4.1%)
$4,981 + $390,440
$395,421
2015
$4,021 (+1.7%)
$4,884 + $382,785
$387,669
2014
$3,953 (+0.2%)
$4,717 + $369,651
$374,368
2013
$3,947 (+2.9%)
$4,717 + $369,651
$374,368
2012
$3,834 (+4.7%)
$4,696 + $367,981
$372,677
2011
$3,663 (+1.6%)
$4,604 + $360,766
$365,370
2010
$3,604 (−1.2%)
$4,514 + $353,693
$358,207
2009
$3,648 (+2.2%)
$4,481 + $351,050
$355,531
2007
$3,569
$4,404 + $344,985
$349,389
*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.
Permits
Aug 6, 2025 • Active
Building permit with plan check
Install a new air-cooled propane generator and an automatic transfer switch at a single-family home.
Generator
HVAC
New construction
Jun 11, 2016 • Final
Building history record
Electrical
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.
Property details
Interior
Bathroom Information
# of Full Baths: 3
Fireplace Information
# of Fireplaces: 2
Has Fireplace
Room Information
# of Rooms: 8
Exterior
Exterior Information
Construction Type: Wood/Steel
Building Construction Quality: Good
Property Information
Subdivision Name: FRANZ VLY
Living Sq. Ft: 2,856
Building Sq. Ft: 3,624
# of Stories: 1
Legal Description: 92 FM 120-140-35 CW PT 34 LLA 91-102 OR 91-85787
Parking & Garage Information
Parking Type: Attached Garage
Garage/Parking Sq. Ft: 768
Garage / Carport Type: Attached
Lot Information
# of Buildings: 1
Land Sq. Ft: 26,044
Acres: 0.5979
Zoning Code: AR20
County Use Description: RURAL RESID-1 RESID
Financial
Assessor Information
Assessment Year: 2026
Public facts
Beds: 4
Baths: 3.0
Sq. Ft.: 2,856
Stories: 1.0
Lot Size: 0.6 acres
Style: Single Family Residential
Year Built: 1994
Year Renovated: 1994
County: Sonoma County
APN: 120140089000
Home facts updated by county records on Aug 13, 2026
Around this home
Schools
Calistoga Elementary School
Public K-6 • Assigned • 4.9mi
6/10
Calistoga Junior/Senior High School
Public 7-12 • Assigned • 5.0mi
4/10
Provided by GreatSchools
Lifestyle
Provided by Walk Score and Local Logic
Climate risks
1/10 Flood Factor
Minimal risk of a flood reaching the building in the next 30 years
5/10 Fire Factor
3% 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
In this area, properties receive around 11.2 hours in
June and 4.9 hours in December, placing it above the
U.S. average for solar exposure.
11.2 hrs
4.9 hrs
JuneDecember
Provided by Shadowmap
Estimated sale price
$1.18M – $1.43M
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