20188 Alder Rd is a 1,672 square foot house on a 7,320 square foot lot with 2 bedrooms and 2 bathrooms. Based on Redfin's Monte Rio data, we estimate the home's value is $629,168.
Single-familyProperty Type
1943Year Built
7,320 sq ftLot Size
$376Est. Price/Sq.Ft.
Source:Public Records
Redfin Estimate
$629,168
$34K since July
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 3.7% lower than the average sale price ($653K) 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
$1,908 (+3.0%)
$66,618 + $48,780
$115,398
2024
$1,852 (+1.7%)
$65,312 + $47,824
$113,136
2023
$1,821 (+2.0%)
$64,032 + $46,887
$110,919
2022
$1,786 (+1.1%)
$62,777 + $45,968
$108,745
2021
$1,767 (−2.8%)
$61,547 + $45,067
$106,614
2020
$1,818 (+4.9%)
$60,341 + $44,184
$104,525
2019
$1,733 (+17.0%)
$59,723 + $43,731
$103,454
2018
$1,481 (+3.6%)
$58,552 + $42,874
$101,426
2017
$1,430 (+1.5%)
$56,279 + $41,210
$97,489
2015
$1,409 (+1.6%)
$55,176 + $40,402
$95,578
2014
$1,387 (+0.2%)
$53,284 + $39,017
$92,301
2013
$1,384 (+3.0%)
$53,284 + $39,017
$92,301
2012
$1,344 (+1.5%)
$53,044 + $38,841
$91,885
2011
$1,325 (+0.8%)
$52,004 + $38,080
$90,084
2010
$1,314 (−0.4%)
$50,985 + $37,334
$88,319
2009
$1,320 (−2.3%)
$50,604 + $37,055
$87,659
2007
$1,351
$49,731 + $36,416
$86,147
Tax history for 20188 Alder Rd
Year
Property tax
Land + Additions
Assessment*
2025
$1,908 (+3.0%)
$66,618 + $48,780
$115,398
2024
$1,852 (+1.7%)
$65,312 + $47,824
$113,136
2023
$1,821 (+2.0%)
$64,032 + $46,887
$110,919
2022
$1,786 (+1.1%)
$62,777 + $45,968
$108,745
2021
$1,767 (−2.8%)
$61,547 + $45,067
$106,614
2020
$1,818 (+4.9%)
$60,341 + $44,184
$104,525
2019
$1,733 (+17.0%)
$59,723 + $43,731
$103,454
2018
$1,481 (+3.6%)
$58,552 + $42,874
$101,426
2017
$1,430 (+1.5%)
$56,279 + $41,210
$97,489
2015
$1,409 (+1.6%)
$55,176 + $40,402
$95,578
2014
$1,387 (+0.2%)
$53,284 + $39,017
$92,301
2013
$1,384 (+3.0%)
$53,284 + $39,017
$92,301
2012
$1,344 (+1.5%)
$53,044 + $38,841
$91,885
2011
$1,325 (+0.8%)
$52,004 + $38,080
$90,084
2010
$1,314 (−0.4%)
$50,985 + $37,334
$88,319
2009
$1,320 (−2.3%)
$50,604 + $37,055
$87,659
2007
$1,351
$49,731 + $36,416
$86,147
*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.
Permits
Apr 13, 2021 • Final
Building permit no plan check
Roofing
Oct 29, 2018 • Final
Building permit no plan check
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: 2
Fireplace Information
# of Fireplaces: 1
Has Fireplace
Room Information
# of Rooms: 4
Exterior
Exterior Information
Building Style Type: L-Shape
Construction Type: Wood/Steel
Building Construction Quality: Fair
Property Information
Subdivision Name: STARRETT 051
Living Sq. Ft: 1,672
Ground Floor Sq. Ft: 1,672
Building Sq. Ft: 1,672
# of Stories: 1
Legal Description: LOT 57
Parking & Garage Information
Garage/Parking Sq. Ft: 364
Lot Information
# of Buildings: 1
Land Sq. Ft: 7,320
Legal Lot Number: 57
Acres: 0.168
Zoning Code: RR1
County Use Description: SINGLE FAM DWELLING
Financial
Assessor Information
Assessment Year: 2026
Public facts
Beds: 2
Baths: 2.0
Sq. Ft.: 1,672
Stories: 1.0
Lot Size: 7,320 square feet
Style: Single Family Residential
Year Built: 1943
Year Renovated: 1943
County: Sonoma County
APN: 095243010000
Home facts updated by county records on Aug 13, 2026
Around this home
Schools
Places
Transit
Monte Rio Elementary School
Public K-8 • Assigned • 0.7mi
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
8/10 Flood Factor
Estimated 74-82% chance 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
81
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
$598,000 – $724,000
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