20229 Alder Rd is a 1,704 square foot house on a 0.29 acre lot with 3 bedrooms and 2 bathrooms. Based on Redfin's Monte Rio data, we estimate the home's value is $726,221.
Single-familyProperty Type
1963Year Built
0.29 acresLot Size
$426Est. Price/Sq.Ft.
Source:Public Records
Redfin Estimate
$726,221
$49K since July
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 0.1% higher than the average sale price ($726K) 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
$7,920 (+645.2%)
$187,272 + $488,988
$676,260
2024
$1,063 (+1.7%)
$183,600 + $479,400
$663,000
2023
$1,045 (+2.2%)
$13,039 + $40,919
$53,958
2022
$1,022 (+1.1%)
$12,784 + $40,117
$52,901
2021
$1,011 (−0.6%)
$12,534 + $39,331
$51,865
2020
$1,018 (−4.8%)
$12,289 + $38,560
$50,849
2019
$1,069 (+34.4%)
$12,163 + $38,165
$50,328
2018
$796 (+2.9%)
$11,925 + $37,417
$49,342
2017
$773 (−6.7%)
$11,463 + $35,965
$47,428
2015
$829 (+1.2%)
$11,239 + $35,260
$46,499
2014
$819 (+0.3%)
$10,855 + $34,051
$44,906
2013
$817 (+7.5%)
$10,855 + $34,051
$44,906
2012
$759 (+1.3%)
$10,806 + $33,898
$44,704
2011
$750 (+0.6%)
$10,595 + $33,234
$43,829
2010
$745 (−0.3%)
$10,388 + $32,583
$42,971
2009
$747 (−5.1%)
$10,311 + $32,340
$42,651
2007
$788
$10,134 + $31,782
$41,916
Tax history for 20229 Alder Rd
Year
Property tax
Land + Additions
Assessment*
2025
$7,920 (+645.2%)
$187,272 + $488,988
$676,260
2024
$1,063 (+1.7%)
$183,600 + $479,400
$663,000
2023
$1,045 (+2.2%)
$13,039 + $40,919
$53,958
2022
$1,022 (+1.1%)
$12,784 + $40,117
$52,901
2021
$1,011 (−0.6%)
$12,534 + $39,331
$51,865
2020
$1,018 (−4.8%)
$12,289 + $38,560
$50,849
2019
$1,069 (+34.4%)
$12,163 + $38,165
$50,328
2018
$796 (+2.9%)
$11,925 + $37,417
$49,342
2017
$773 (−6.7%)
$11,463 + $35,965
$47,428
2015
$829 (+1.2%)
$11,239 + $35,260
$46,499
2014
$819 (+0.3%)
$10,855 + $34,051
$44,906
2013
$817 (+7.5%)
$10,855 + $34,051
$44,906
2012
$759 (+1.3%)
$10,806 + $33,898
$44,704
2011
$750 (+0.6%)
$10,595 + $33,234
$43,829
2010
$745 (−0.3%)
$10,388 + $32,583
$42,971
2009
$747 (−5.1%)
$10,311 + $32,340
$42,651
2007
$788
$10,134 + $31,782
$41,916
*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 permit with plan check
Addition
Jun 11, 2016 • Final
Building permit no plan check
Replace the gas furnace in a single-family home.
Gas
HVAC
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: 5
Exterior
Exterior Information
Building Style Type: U-Shape
Construction Type: Wood/Steel
Building Construction Quality: Good
Property Information
Subdivision Name: STARRETT 51
Living Sq. Ft: 1,704
Ground Floor Sq. Ft: 1,704
Building Sq. Ft: 2,472
# of Stories: 1
Parking & Garage Information
Parking Type: Attached Garage
Garage/Parking Sq. Ft: 768
Garage / Carport Type: Attached
Lot Information
# of Buildings: 1
Land Sq. Ft: 12,696
Legal Lot Number: 32,34
Acres: 0.2915
Zoning Code: RR1
County Use Description: SINGLE FAM DWELLING
Financial
Assessor Information
Assessment Year: 2026
Public facts
Beds: 3
Baths: 2.0
Sq. Ft.: 1,704
Stories: 1.0
Lot Size: 0.29 acres
Style: Single Family Residential
Year Built: 1963
Year Renovated: 1964
County: Sonoma County
APN: 095221019000
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 • 10.5mi
8/10
Provided by GreatSchools
Lifestyle
Provided by Walk Score and Local Logic
Climate risks
5/10 Flood Factor
Estimated 19-29% 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
10 days above 86° expected this year, 26 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
$690,000 – $836,000
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