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About this home
Double your potential with this Sonoma duplex. Extra large lot with mature oaks in a spacious backyard and plenty of parking. Roomy basement/garage with workshop benches for your projects galore. Close but not too close to all the amenities you look for in Wine Country living.
Single-familyProperty Type
1950Year Built
8,625 sq ftLot Size
$525Price/Sq.Ft.
2 garage spacesParking
Listed by Sheila Deignan•DRE #00944527• Century 21 Epic Wine Country
Double your potential with this Sonoma duplex. Extra large lot with mature oaks in a spacious backyard and plenty of parking. Roomy basement/garage with workshop benches for your projects galore. Close but not too close to all the amenities you look for in Wine Country living.
BAREIS #326043144
Jul 18, 2026
Price Changed
$599,000
$525/sq ft
Jun 28, 2026
Price Changed
$639,000
$561/sq ft
May 19, 2026
Listed
$649,000
$569/sq ft
Public Records
Jul 2, 1987
Sold
$104,000
$91/sq ft
Year
Property tax
Land + Additions
Assessment*
2025
$5,351 (+1.8%)
$85,374 + $145,399
$230,773
2024
$5,255 (+3.4%)
$85,374 + $145,399
$230,773
2023
$5,084 (+2.7%)
$83,700 + $142,549
$226,249
2022
$4,948 (+3.2%)
$82,059 + $139,754
$221,813
2021
$4,795 (+2.3%)
$80,450 + $137,014
$217,464
2020
$4,685 (−1.3%)
$78,873 + $134,328
$213,201
2019
$4,749 (+1.5%)
$78,065 + $132,951
$211,016
2018
$4,676 (+26.0%)
$76,535 + $130,345
$206,880
2017
$3,711 (−5.6%)
$73,564 + $125,285
$198,849
2015
$3,930 (+2.5%)
$72,122 + $122,829
$194,951
2014
$3,834 (+1.7%)
$69,648 + $118,615
$188,263
2013
$3,768 (+2.9%)
$69,648 + $118,615
$188,263
2012
$3,662 (+15.1%)
$69,334 + $118,079
$187,413
2011
$3,182 (+2.4%)
$67,975 + $115,764
$183,739
2010
$3,108 (+2.6%)
$59,757 + $95,615
$155,372
2009
$3,030 (+3.6%)
$59,311 + $94,901
$154,212
2007
$2,925
$58,287 + $93,262
$151,549
Public record
Beds
2
Baths
2
Stories
2
Lot width
—
Lot depth
—
Lot size
8,625 Sq. Ft.
Year renovated
1970
Finished Sq. Ft.
1,140
Unfinished Sq. Ft.
—
Total Sq. Ft.
1,140
Year built
1950
Style
Multi-Family (2-4 Unit)
County
Sonoma County
APN
056471014000
Parking Spaces
—
Basement
—
Accessible
—
HOA Dues
—
Garage
—
Features
—
Last updated by owner on Jul 10, 2026.
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 96° 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
82
52
87
56
88
55
86
56
80
51
65
46
59
43
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Sun exposure
88/ 100
Very good sunlight
Sunscore
There appears to be minimal shading by surrounding buildings, terrain, and vegetation.
9.2 hrs
5.7 hrs
JuneDecember
Provided by Shadowmap
Redfin Estimate for 18466 4th Ave
$615,567
$17K over list price of $599K
Nearby comparable homes
The Redfin Estimate uses 6 recent nearby sales, priced between $580K to $700K.