509 N Main St is a 1,242 square foot house on a 8,520 square foot lot with 3 bedrooms and 1 bathroom. Based on Redfin's Sebastopol data, we estimate the home's value is $804,108.
Single-familyProperty Type
1934Year Built
8,520 sq ftLot Size
$647Est. Price/Sq.Ft.
Source:Public Records
Redfin Estimate
$804,108
$7,000 since September
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 19.5% lower than the average sale price ($999K) 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
$1,404 (+25.6%)
$16,629 + $58,830
$75,459
2024
$1,118 (+2.0%)
$16,303 + $57,677
$73,980
2023
$1,096
$15,984 + $56,547
$72,531
2022
$1,097 (−0.1%)
$15,671 + $55,439
$71,110
2021
$1,098 (−3.2%)
$15,364 + $54,352
$69,716
2020
$1,134 (+4.7%)
$15,063 + $53,287
$68,350
2019
$1,084 (+0.8%)
$14,909 + $52,741
$67,650
2018
$1,075 (+3.9%)
$14,617 + $51,707
$66,324
2017
$1,034 (+5.9%)
$14,050 + $49,700
$63,750
2015
$977 (+1.0%)
$13,775 + $48,726
$62,501
2014
$967 (+0.2%)
$13,304 + $47,055
$60,359
2013
$965 (+16.0%)
$13,304 + $47,055
$60,359
2012
$832 (+1.5%)
$13,244 + $46,843
$60,087
2011
$820 (+0.8%)
$12,985 + $45,925
$58,910
2010
$813 (−2.3%)
$12,731 + $45,025
$57,756
2009
$832 (+5.6%)
$12,636 + $44,689
$57,325
2007
$788
$12,419 + $43,918
$56,337
Tax history for 509 N Main St
Year
Property tax
Land + Additions
Assessment*
2025
$1,404 (+25.6%)
$16,629 + $58,830
$75,459
2024
$1,118 (+2.0%)
$16,303 + $57,677
$73,980
2023
$1,096
$15,984 + $56,547
$72,531
2022
$1,097 (−0.1%)
$15,671 + $55,439
$71,110
2021
$1,098 (−3.2%)
$15,364 + $54,352
$69,716
2020
$1,134 (+4.7%)
$15,063 + $53,287
$68,350
2019
$1,084 (+0.8%)
$14,909 + $52,741
$67,650
2018
$1,075 (+3.9%)
$14,617 + $51,707
$66,324
2017
$1,034 (+5.9%)
$14,050 + $49,700
$63,750
2015
$977 (+1.0%)
$13,775 + $48,726
$62,501
2014
$967 (+0.2%)
$13,304 + $47,055
$60,359
2013
$965 (+16.0%)
$13,304 + $47,055
$60,359
2012
$832 (+1.5%)
$13,244 + $46,843
$60,087
2011
$820 (+0.8%)
$12,985 + $45,925
$58,910
2010
$813 (−2.3%)
$12,731 + $45,025
$57,756
2009
$832 (+5.6%)
$12,636 + $44,689
$57,325
2007
$788
$12,419 + $43,918
$56,337
*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.
Zoning
R7
Multifamily Residential District
The purpose of the R7 District is to implement the High Density Residential land use category of the General Plan. This district is applicable to those lands within that category which are appropriate for densities from approximately 12.1 to 25 units per acre.
Permitted uses
Include but are not limited to:
Garden center
Day care facility
Housing-Group
Housing-Single unit
Housing-Multiple units
Park & open space
Property details
Interior
Basement Information
Basement Sq. Ft: 192
Bathroom Information
# of Full Baths: 1
Fireplace Information
# of Fireplaces: 1
Has Fireplace
Room Information
# of Rooms: 6
Exterior
Exterior Information
Construction Type: Wood/Steel
Building Construction Quality: Average
Property Information
Subdivision Name: BONNARDEL ADD
Living Sq. Ft: 1,242
Ground Floor Sq. Ft: 1,242
Building Sq. Ft: 1,446
# of Stories: 1
Legal Description: LOT 6 BONNARDEL ADDITION
Parking & Garage Information
Parking Type: Detached Garage
Garage/Parking Sq. Ft: 378
Garage / Carport Type: Detached
Lot Information
# of Buildings: 1
Land Sq. Ft: 8,520
Legal Lot Number: 6
Legal Block Number: 1
Acres: 0.1956
Zoning Code: CITYSE
County Use Description: SINGLE FAM DWELLING
Financial
Assessor Information
Assessment Year: 2026
Public facts
Beds: 3
Baths: 1.0
Sq. Ft.: 1,242
Stories: 1.0
Lot Size: 8,520 square feet
Style: Single Family Residential
Year Built: 1934
Year Renovated: 1938
County: Sonoma County
APN: 004031006000
Home facts updated by county records on Aug 13, 2026
Around this home
Schools
Park Side Elementary School
Public K-4 • Assigned • 0.4mi
9/10
Brook Haven Elementary School
Public 5-8 • Assigned • 0.7mi
5/10
Analy High School
Public 9-12 • Assigned • 0.1mi
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
3/10 Heat Factor
7 days above 91° expected this year, 17 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
Sebastopol, CA • 95472
Average low and high temperatures (°F)
61
41
62
43
69
45
66
46
73
49
76
51
77
52
82
53
79
55
76
50
63
46
57
44
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Sun exposure
In this area, properties receive around 11.1 hours in
June and 4.9 hours in December, placing it above the
U.S. average for solar exposure.
11.1 hrs
4.9 hrs
JuneDecember
Provided by Shadowmap
Estimated sale price
$764,000 – $925,000
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