21876 Russian River Ave is a 674 square foot house on a 3,360 square foot lot with 2 bedrooms and 1 bathroom. - it last sold on May 12, 2017 for $410,000. Based on Redfin's Monte Rio data, we estimate the home's value is $509,811.
Single-familyProperty Type
1949Year Built
3,360 sq ftLot Size
$756Est. Price/Sq.Ft.
Source:Public Records
Redfin Estimate
$509,811
$100K since sold in May 2017$6,000 since August
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 30.7% higher than the average sale price ($390K) of 5 comparable homes.
*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.
Permits
Nov 19, 2024 • Final
Building revision
Convert a planned two-story addition for a single-family home into a one-story addition.
Remodel
Jul 5, 2024 • Final
Building revision
Revise the project scope to change from a lower floor addition to a second story addition and remodel.
Addition
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: 1
Fireplace Information
# of Fireplaces: 1
Has Fireplace
Room Information
# of Rooms: 3
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: 674
Ground Floor Sq. Ft: 674
Building Sq. Ft: 674
# of Stories: 1
Legal Description: LOT 35
Lot Information
# of Buildings: 1
Land Sq. Ft: 3,360
Legal Lot Number: 35
Acres: 0.0771
Zoning Code: RR1
County Use Description: SINGLE FAM DWELLING
Financial
Assessor Information
Assessment Year: 2026
Public facts
Beds: 2
Baths: 1.0
Sq. Ft.: 674
Stories: 1.0
Lot Size: 3,360 square feet
Style: Single Family Residential
Year Built: 1949
Year Renovated: 1975
County: Sonoma County
APN: 095051006000
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, 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
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43
69
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66
46
74
49
75
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73
52
82
53
78
53
75
49
62
45
58
44
Jan
Feb
Mar
Apr
May
Jun
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Aug
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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
$485,000 – $587,000
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