21894 Russian River Ave is a 1,057 square foot house on a 8,600 square foot lot with 2 bedrooms and 2 bathrooms. - it last sold on September 06, 2017 for $799,000. Based on Redfin's Monte Rio data, we estimate the home's value is $893,975.
Single-familyProperty Type
1933Year Built
8,600 sq ftLot Size
$846Est. Price/Sq.Ft.
Source:Public Records
Redfin Estimate
$893,975
$95K since sold in September 2017$26K since September
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 72.1% higher than the average sale price ($519K) of 6 comparable homes.
*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.
Permits
Jul 18, 2025 • Final
Building permit no plan check
Roofing
Oct 7, 2020 • Final
Building permit with plan check
Relocate a washing machine and clothes dryer from the lower garage floor to the main floor above the flood level. Extend the existing deck over a developed portion of the site.
Addition
Plumbing
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: 1,044
Bathroom Information
# of Full Baths: 2
Room Information
# of Rooms: 5
Exterior
Exterior Information
Building Style Type: L-Shape
Construction Type: Wood/Steel
Building Construction Quality: Average
Property Information
Subdivision Name: MESA GRANDE
Living Sq. Ft: 1,057
Ground Floor Sq. Ft: 1,057
Building Sq. Ft: 1,057
# of Stories: 1
Legal Description: MESA GRANDE LOT 26
Lot Information
# of Buildings: 1
Land Sq. Ft: 8,600
Legal Lot Number: 26
Acres: 0.1974
Zoning Code: RR1
County Use Description: SINGLE FAM DWELLING
Location Information
Parcel Location Influence: River
Financial
Assessor Information
Assessment Year: 2026
Public facts
Beds: 2
Baths: 2.0
Sq. Ft.: 1,057
Stories: 1.0
Lot Size: 8,600 square feet
Style: Single Family Residential
Year Built: 1933
Year Renovated: 1990
County: Sonoma County
APN: 095051001000
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
2/10 Fire Factor
0.00% chance of being in a wildfire in next 30 years
2/10 Heat Factor
9 days above 84° expected this year, 24 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)
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77
53
82
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77
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75
49
62
45
58
44
Jan
Feb
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May
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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
$850,000 – $1.03M
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