21000 River Blvd is a 960 square foot house on a 5,880 square foot lot with 2 bedrooms and 2 bathrooms. - it last sold on January 10, 2017 for $170,000. Based on Redfin's Monte Rio data, we estimate the home's value is $514,737.
Single-familyProperty Type
1916Year Built
5,880 sq ftLot Size
$536Est. Price/Sq.Ft.
Source:Public Records
Redfin Estimate
$514,737
$345K since sold in January 2017$40K since August
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 2.2% higher than the average sale price ($504K) 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.
Zoning and permits
Zoning
Permits
LC
VOH
RC 50'
Limited Commercial District
The LC zone provides areas for retail sales and services necessary for the daily self-sufficiency of urban and rural areas in keeping with their character.
Zone overlays
Valley Oak Habitat Combining District
Riparian Corridor Combining Zone
Permitted uses
Include but are not limited to:
Livestock production
Bank
Housing-Group
Housing-Other
Hotel / motel
Office
Medical office
Mar 9, 2026 • Final
Building permit no plan check
Electrical
Jul 13, 2021 • Active
Building permit with plan check
Install a generator transfer switch as part of an electrical panel upgrade.
Electrical
Generator
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: 2
Room Information
# of Rooms: 4
Exterior
Exterior Information
Building Style Type: Square Design
Construction Type: Wood/Steel
Building Construction Quality: Fair
Property Information
Subdivision Name: TIER A
Living Sq. Ft: 960
Ground Floor Sq. Ft: 960
Building Sq. Ft: 960
# of Stories: 1
Legal Description: MAP 19 PG 9 PART OF LOT 9,10
Lot Information
# of Buildings: 1
Land Sq. Ft: 5,880
Legal Lot Number: 9
Acres: 0.135
County Use Description: SFD NON CONFORM USE
Location Information
Parcel Location Influence: River
Financial
Assessor Information
Assessment Year: 2026
Public facts
Beds: 2
Baths: 2.0
Sq. Ft.: 960
Stories: 1.0
Lot Size: 5,880 square feet
Style: Single Family Residential
Year Built: 1916
Year Renovated: 1924
County: Sonoma County
APN: 095170008000
Home facts updated by county records on Aug 13, 2026
Around this home
Schools
Monte Rio Elementary School
Public K-8 • Assigned • 0.5mi
7/10
Analy High School
Public 9-12 • Assigned • 10.6mi
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
9 days above 86° 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)
59
40
60
43
69
44
66
46
74
49
75
51
73
52
82
53
78
53
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
$490,000 – $592,000
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