21946 Russian River Ave is a 1,095 square foot house on a 6,240 square foot lot with 1 bedroom and 1 bathroom. Based on Redfin's Monte Rio data, we estimate the home's value is $400,496.
Single-familyProperty Type
1915Year Built
6,240 sq ftLot Size
$366Est. Price/Sq.Ft.
Source:Public Records
Redfin Estimate
$400,496
$28K since September
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 6.9% lower than the average sale price ($430K) 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
$2,825 (+2.6%)
$88,211 + $111,634
$199,845
2024
$2,753 (+1.8%)
$86,482 + $109,446
$195,928
2023
$2,704 (+2.0%)
$84,787 + $107,300
$192,087
2022
$2,651 (+1.2%)
$83,125 + $105,197
$188,322
2021
$2,621 (−1.7%)
$81,496 + $103,135
$184,631
2020
$2,666 (+3.9%)
$79,899 + $101,113
$181,012
2019
$2,566 (+12.6%)
$79,080 + $100,077
$179,157
2018
$2,279 (+4.0%)
$77,530 + $98,115
$175,645
2017
$2,190 (+2.8%)
$74,520 + $94,306
$168,826
2015
$2,130 (+17.4%)
$73,059 + $92,457
$165,516
2014
$1,814 (+0.3%)
$63,661 + $69,407
$133,068
2013
$1,809 (+2.7%)
$63,661 + $69,407
$133,068
2012
$1,762 (+1.6%)
$63,374 + $69,094
$132,468
2011
$1,734 (+0.9%)
$62,132 + $67,740
$129,872
2010
$1,719 (−0.5%)
$60,914 + $66,412
$127,326
2009
$1,727 (−1.3%)
$60,459 + $65,916
$126,375
2007
$1,750
$59,415 + $64,778
$124,193
Tax history for 21946 Russian River Ave
Year
Property tax
Land + Additions
Assessment*
2025
$2,825 (+2.6%)
$88,211 + $111,634
$199,845
2024
$2,753 (+1.8%)
$86,482 + $109,446
$195,928
2023
$2,704 (+2.0%)
$84,787 + $107,300
$192,087
2022
$2,651 (+1.2%)
$83,125 + $105,197
$188,322
2021
$2,621 (−1.7%)
$81,496 + $103,135
$184,631
2020
$2,666 (+3.9%)
$79,899 + $101,113
$181,012
2019
$2,566 (+12.6%)
$79,080 + $100,077
$179,157
2018
$2,279 (+4.0%)
$77,530 + $98,115
$175,645
2017
$2,190 (+2.8%)
$74,520 + $94,306
$168,826
2015
$2,130 (+17.4%)
$73,059 + $92,457
$165,516
2014
$1,814 (+0.3%)
$63,661 + $69,407
$133,068
2013
$1,809 (+2.7%)
$63,661 + $69,407
$133,068
2012
$1,762 (+1.6%)
$63,374 + $69,094
$132,468
2011
$1,734 (+0.9%)
$62,132 + $67,740
$129,872
2010
$1,719 (−0.5%)
$60,914 + $66,412
$127,326
2009
$1,727 (−1.3%)
$60,459 + $65,916
$126,375
2007
$1,750
$59,415 + $64,778
$124,193
*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.
Permits
Jun 11, 2016 • Final
Building history record
Upgrade the electrical service.
Electrical
Jun 11, 2016 • Final
Building permit with plan check
Electrical
Plumbing
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.
Property details
Interior
Basement Information
Basement Sq. Ft: 970
Bathroom Information
# of Full Baths: 1
Fireplace Information
# of Fireplaces: 1
Has Fireplace
Room Information
# of Rooms: 2
Exterior
Exterior Information
Building Style Type: L-Shape
Construction Type: Wood/Steel
Building Construction Quality: Fair
Property Information
Subdivision Name: MESA GRANDE
Living Sq. Ft: 1,095
Ground Floor Sq. Ft: 1,095
Building Sq. Ft: 1,095
# of Stories: 1
Legal Description: LOT 4 MESA GRANDE
Lot Information
# of Buildings: 1
Land Sq. Ft: 6,240
Legal Lot Number: 4
Acres: 0.1433
Zoning Code: RR1
County Use Description: SINGLE FAM DWELLING
Location Information
Parcel Location Influence: River
Financial
Assessor Information
Assessment Year: 2026
Public facts
Beds: 1
Baths: 1.0
Sq. Ft.: 1,095
Stories: 1.0
Lot Size: 6,240 square feet
Style: Single Family Residential
Year Built: 1915
Year Renovated: 1930
County: Sonoma County
APN: 095041003000
Home facts updated by county records on Aug 13, 2026
Around this home
Schools
Monte Rio Elementary School
Public K-8 • Assigned • 0.6mi
7/10
Analy High School
Public 9-12 • Assigned • 11.7mi
8/10
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
1/10 Fire Factor
Unlikely to be in a wildfire in next 30 years
2/10 Heat Factor
8 days above 84° expected this year, 23 days in 30 years
1/10 Wind Factor
Minimal risk of severe winds over next 30 years
9/10 Air Factor
17 unhealthy days expected this year, 19 days in 30 years
Provided by First Street
Historical weather
Monte Rio, CA • 95462
Average low and high temperatures (°F)
59
40
60
43
69
44
66
46
74
49
75
51
77
53
82
53
77
55
75
49
62
45
58
44
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Sun exposure
In this area, properties receive around 10.6 hours in
June and 4.9 hours in December, placing it above the
U.S. average for solar exposure.
10.6 hrs
4.9 hrs
JuneDecember
Provided by Shadowmap
Estimated sale price
$381,000 – $461,000
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