20581 River Blvd is a 816 square foot house on a 5,600 square foot lot with 1 bedroom and 1 bathroom. Based on Redfin's Monte Rio data, we estimate the home's value is $426,249.
Single-familyProperty Type
1955Year Built
5,600 sq ftLot Size
$522Est. Price/Sq.Ft.
Source:Public Records
Redfin Estimate
$426,249
$12K since August
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 0.3% higher than the average sale price ($425K) 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
$1,544 (+3.3%)
$30,162 + $51,720
$81,882
2024
$1,494 (+1.6%)
$29,571 + $50,706
$80,277
2023
$1,471 (+1.9%)
$28,992 + $49,712
$78,704
2022
$1,443 (+1.0%)
$28,424 + $48,738
$77,162
2021
$1,429 (−3.6%)
$27,867 + $47,783
$75,650
2020
$1,482 (+5.7%)
$27,321 + $46,847
$74,168
2019
$1,402 (+20.5%)
$27,041 + $46,367
$73,408
2018
$1,164 (+3.2%)
$26,511 + $45,458
$71,969
2017
$1,128 (+0.5%)
$25,483 + $43,694
$69,177
2015
$1,122 (+1.4%)
$24,984 + $42,838
$67,822
2014
$1,107 (+0.2%)
$24,127 + $41,369
$65,496
2013
$1,105 (+3.2%)
$24,127 + $41,369
$65,496
2012
$1,070 (+1.3%)
$24,018 + $41,183
$65,201
2011
$1,056 (+0.7%)
$23,548 + $40,376
$63,924
2010
$1,048 (−0.4%)
$23,087 + $39,585
$62,672
2009
$1,052 (−3.3%)
$22,915 + $39,290
$62,205
2007
$1,089
$22,520 + $38,612
$61,132
Tax history for 20581 River Blvd
Year
Property tax
Land + Additions
Assessment*
2025
$1,544 (+3.3%)
$30,162 + $51,720
$81,882
2024
$1,494 (+1.6%)
$29,571 + $50,706
$80,277
2023
$1,471 (+1.9%)
$28,992 + $49,712
$78,704
2022
$1,443 (+1.0%)
$28,424 + $48,738
$77,162
2021
$1,429 (−3.6%)
$27,867 + $47,783
$75,650
2020
$1,482 (+5.7%)
$27,321 + $46,847
$74,168
2019
$1,402 (+20.5%)
$27,041 + $46,367
$73,408
2018
$1,164 (+3.2%)
$26,511 + $45,458
$71,969
2017
$1,128 (+0.5%)
$25,483 + $43,694
$69,177
2015
$1,122 (+1.4%)
$24,984 + $42,838
$67,822
2014
$1,107 (+0.2%)
$24,127 + $41,369
$65,496
2013
$1,105 (+3.2%)
$24,127 + $41,369
$65,496
2012
$1,070 (+1.3%)
$24,018 + $41,183
$65,201
2011
$1,056 (+0.7%)
$23,548 + $40,376
$63,924
2010
$1,048 (−0.4%)
$23,087 + $39,585
$62,672
2009
$1,052 (−3.3%)
$22,915 + $39,290
$62,205
2007
$1,089
$22,520 + $38,612
$61,132
*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
Work on siding.
Remodel
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: 1
Room Information
# of Rooms: 2
Exterior
Exterior Information
Building Style Type: L-Shape
Construction Type: Wood/Steel
Building Construction Quality: Poor
Property Information
Subdivision Name: EAST MONTE RIO ADD
Living Sq. Ft: 816
Ground Floor Sq. Ft: 816
Building Sq. Ft: 816
# of Stories: 1
Lot Information
# of Buildings: 1
Land Sq. Ft: 5,600
Acres: 0.1286
Zoning Code: RR1
County Use Description: SINGLE FAM DWELLING
Financial
Assessor Information
Assessment Year: 2026
Public facts
Beds: 1
Baths: 1.0
Sq. Ft.: 816
Stories: 1.0
Lot Size: 5,600 square feet
Style: Single Family Residential
Year Built: 1955
Year Renovated: 1955
County: Sonoma County
APN: 095192009000
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 • 10.5mi
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
3/10 Fire Factor
0.15% chance of being in a wildfire in next 30 years
2/10 Heat Factor
9 days above 86° expected this year, 25 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
$405,000 – $491,000
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