850 First St is a 1,406 square foot house on a 0.71 acre lot with 1 bedroom and 1 bathroom. Based on Redfin's Sebastopol data, we estimate the home's value is $768,183.
Single-familyProperty Type
1914Year Built
0.71 acresLot Size
$546Est. Price/Sq.Ft.
Source:Public Records
Redfin Estimate
$768,183
$39K since August
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 12% lower than the average sale price ($873K) 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
$2,858 (+18.1%)
$22,799 + $175,463
$198,262
2024
$2,421 (+2.6%)
$22,352 + $172,023
$194,375
2023
$2,361 (+0.4%)
$21,914 + $168,650
$190,564
2022
$2,351 (+1.7%)
$21,485 + $165,344
$186,829
2021
$2,311 (+0.1%)
$21,064 + $162,102
$183,166
2020
$2,308 (+3.4%)
$20,651 + $158,924
$179,575
2019
$2,233 (+1.3%)
$20,440 + $157,295
$177,735
2018
$2,205 (+4.4%)
$20,040 + $154,211
$174,251
2017
$2,112 (+223.4%)
$19,263 + $148,224
$167,487
2015
$653 (+0.8%)
$18,886 + $145,318
$164,204
2014
$648 (+0.2%)
$18,239 + $19,621
$37,860
2013
$647 (+9.0%)
$18,239 + $19,621
$37,860
2012
$593 (+1.4%)
$18,157 + $19,533
$37,690
2011
$585 (+0.7%)
$17,801 + $19,150
$36,951
2010
$581 (−3.0%)
$17,452 + $18,775
$36,227
2009
$599 (+7.1%)
$17,322 + $18,635
$35,957
2007
$560
$17,024 + $18,314
$35,338
Tax history for 850 First St
Year
Property tax
Land + Additions
Assessment*
2025
$2,858 (+18.1%)
$22,799 + $175,463
$198,262
2024
$2,421 (+2.6%)
$22,352 + $172,023
$194,375
2023
$2,361 (+0.4%)
$21,914 + $168,650
$190,564
2022
$2,351 (+1.7%)
$21,485 + $165,344
$186,829
2021
$2,311 (+0.1%)
$21,064 + $162,102
$183,166
2020
$2,308 (+3.4%)
$20,651 + $158,924
$179,575
2019
$2,233 (+1.3%)
$20,440 + $157,295
$177,735
2018
$2,205 (+4.4%)
$20,040 + $154,211
$174,251
2017
$2,112 (+223.4%)
$19,263 + $148,224
$167,487
2015
$653 (+0.8%)
$18,886 + $145,318
$164,204
2014
$648 (+0.2%)
$18,239 + $19,621
$37,860
2013
$647 (+9.0%)
$18,239 + $19,621
$37,860
2012
$593 (+1.4%)
$18,157 + $19,533
$37,690
2011
$585 (+0.7%)
$17,801 + $19,150
$36,951
2010
$581 (−3.0%)
$17,452 + $18,775
$36,227
2009
$599 (+7.1%)
$17,322 + $18,635
$35,957
2007
$560
$17,024 + $18,314
$35,338
*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.
Zoning
R2
Single-Family Residential District
The purpose of the R2 District is to implement the Low Density Residential land use category of the General Plan, and the General Plan goal of preserving the communitys rural agricultural setting and residential character. The R2 District allows densities up to approximately 2.5 units per acre.
Permitted uses
Include but are not limited to:
Agriculture
Garden center
Day care facility
Housing-Group
Housing-Single unit
Housing-Other
Park & open space
Property details
Interior
Basement Information
Basement Sq. Ft: 479
Bathroom Information
# of Full Baths: 1
Room Information
# of Rooms: 2
Exterior
Exterior Information
Building Style Type: L-Shape
Construction Type: Wood/Steel
Building Construction Quality: Average
Property Information
Living Sq. Ft: 1,406
Ground Floor Sq. Ft: 942
Building Sq. Ft: 1,406
# of Stories: 1
Parking & Garage Information
Garage/Parking Sq. Ft: 360
Lot Information
# of Buildings: 1
Land Sq. Ft: 31,000
Acres: 0.7117
Zoning Code: CITYSE
County Use Description: SFD W/GRANNY UNIT
Financial
Assessor Information
Assessment Year: 2026
Public facts
Beds: 1
Baths: 1.0
Sq. Ft.: 1,406
Stories: 1.0
Lot Size: 0.71 acres
Style: Single Family Residential
Year Built: 1914
Year Renovated: 1924
County: Sonoma County
APN: 004410003000
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 • 1.0mi
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
2/10 Fire Factor
0.00% chance of being in a wildfire in next 30 years
3/10 Heat Factor
7 days above 90° expected this year, 16 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
74
52
82
53
79
53
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
$730,000 – $884,000
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