18921 Robinson Rd is a 864 square foot house on a 0.4 acre lot with 2 bedrooms and 1 bathroom. Based on Redfin's Sonoma data, we estimate the home's value is $690,571.
Single-familyProperty Type
1962Year Built
0.4 acresLot Size
$799Est. Price/Sq.Ft.
Source:Public Records
Redfin Estimate
$690,571
$26K since August
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 3.4% higher than the average sale price ($668K) 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
$2,902 (+4.1%)
$17,488 + $67,638
$85,126
2024
$2,789 (+3.8%)
$17,146 + $66,312
$83,458
2023
$2,687 (+4.2%)
$16,810 + $65,012
$81,822
2022
$2,579 (+4.6%)
$16,481 + $63,738
$80,219
2021
$2,465 (+2.9%)
$16,158 + $62,489
$78,647
2020
$2,395 (+7.4%)
$15,842 + $61,264
$77,106
2019
$2,229 (+2.4%)
$15,680 + $60,636
$76,316
2018
$2,177 (+1.1%)
$15,373 + $59,448
$74,821
2017
$2,154 (+13.1%)
$14,777 + $57,141
$71,918
2015
$1,904 (+7.1%)
$14,488 + $56,021
$70,509
2014
$1,777 (−1.6%)
$13,992 + $54,100
$68,092
2013
$1,807 (+2.9%)
$13,992 + $54,100
$68,092
2012
$1,755 (+3.4%)
$13,929 + $53,856
$67,785
2011
$1,696 (+2.6%)
$13,656 + $52,800
$66,456
2010
$1,653 (+2.8%)
$13,389 + $51,765
$65,154
2009
$1,608 (+3.6%)
$13,289 + $51,379
$64,668
2007
$1,551
$13,060 + $50,493
$63,553
Tax history for 18921 Robinson Rd
Year
Property tax
Land + Additions
Assessment*
2025
$2,902 (+4.1%)
$17,488 + $67,638
$85,126
2024
$2,789 (+3.8%)
$17,146 + $66,312
$83,458
2023
$2,687 (+4.2%)
$16,810 + $65,012
$81,822
2022
$2,579 (+4.6%)
$16,481 + $63,738
$80,219
2021
$2,465 (+2.9%)
$16,158 + $62,489
$78,647
2020
$2,395 (+7.4%)
$15,842 + $61,264
$77,106
2019
$2,229 (+2.4%)
$15,680 + $60,636
$76,316
2018
$2,177 (+1.1%)
$15,373 + $59,448
$74,821
2017
$2,154 (+13.1%)
$14,777 + $57,141
$71,918
2015
$1,904 (+7.1%)
$14,488 + $56,021
$70,509
2014
$1,777 (−1.6%)
$13,992 + $54,100
$68,092
2013
$1,807 (+2.9%)
$13,992 + $54,100
$68,092
2012
$1,755 (+3.4%)
$13,929 + $53,856
$67,785
2011
$1,696 (+2.6%)
$13,656 + $52,800
$66,456
2010
$1,653 (+2.8%)
$13,389 + $51,765
$65,154
2009
$1,608 (+3.6%)
$13,289 + $51,379
$64,668
2007
$1,551
$13,060 + $50,493
$63,553
*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 no plan check
Electrical
Jun 11, 2016 • Final
Building permit with plan check
Construct an addition to an existing single-family home.
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
Room Information
# of Rooms: 2
Exterior
Exterior Information
Building Style Type: Square Design
Construction Type: Wood/Steel
Building Construction Quality: Average
Property Information
Subdivision Name: SONOMA GROVE FARMS
Living Sq. Ft: 864
Building Sq. Ft: 864
# of Stories: 1
Lot Information
# of Buildings: 1
Land Sq. Ft: 17,230
Legal Lot Number: 14
Acres: 0.3955
Zoning Code: R1B8FRZN
County Use Description: SINGLE FAM DWELLING
Financial
Assessor Information
Assessment Year: 2026
Public facts
Beds: 2
Baths: 1.0
Sq. Ft.: 864
Stories: 1.0
Lot Size: 0.4 acres
Style: Single Family Residential
Year Built: 1962
Year Renovated: 1995
County: Sonoma County
APN: 127093016000
Home facts updated by county records on Aug 13, 2026
Around this home
Schools
Sassarini Elementary School
Public K-5 • Assigned • 1.0mi
3/10
Altimira Middle School
Public 6-8 • Assigned • 1.4mi
2/10
Sonoma Valley High School
Public 9-12 • Assigned • 1.7mi
7/10
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
4/10 Fire Factor
2% chance of being in a wildfire in next 30 years
4/10 Heat Factor
7 days above 95° expected this year, 15 days in 30 years
1/10 Wind Factor
Minimal risk of severe winds over next 30 years
9/10 Air Factor
19 unhealthy days expected this year, 19 days in 30 years
Provided by First Street
Historical weather
Sonoma, CA • 95476
Average low and high temperatures (°F)
62
40
64
42
72
46
70
47
78
51
83
54
82
54
89
55
86
56
80
51
65
46
59
43
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Sun exposure
In this area, properties receive around 11.3 hours in
June and 4.9 hours in December, placing it above the
U.S. average for solar exposure.
11.3 hrs
4.9 hrs
JuneDecember
Provided by Shadowmap
Estimated sale price
$657,000 – $795,000
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