306 Sparkes Rd is a 696 square foot house on a 0.73 acre lot with 1 bedroom and 1 bathroom. Based on Redfin's Sebastopol data, we estimate the home's value is $680,657.
Single-familyProperty Type
1945Year Built
0.73 acresLot Size
$978Est. Price/Sq.Ft.
Source:Public Records
Redfin Estimate
$680,657
$17K since July
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 18.6% lower than the average sale price ($836K) 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
$1,473 (+1.2%)
$51,830 + $42,405
$94,235
2024
$1,455 (+1.3%)
$50,814 + $41,574
$92,388
2023
$1,437 (+0.7%)
$49,818 + $40,759
$90,577
2022
$1,427 (−0.3%)
$48,842 + $39,960
$88,802
2021
$1,431 (−3.4%)
$47,885 + $39,177
$87,062
2020
$1,481 (+20.7%)
$46,947 + $38,409
$85,356
2019
$1,227 (+1.2%)
$46,466 + $38,016
$84,482
2018
$1,213 (+3.5%)
$45,555 + $37,271
$82,826
2017
$1,172 (+4.9%)
$43,787 + $35,825
$79,612
2015
$1,117 (+1.6%)
$42,929 + $35,123
$78,052
2014
$1,099
$41,457 + $33,919
$75,376
2013
$1,098 (+5.6%)
$41,457 + $33,919
$75,376
2012
$1,040 (+1.5%)
$41,270 + $33,766
$75,036
2011
$1,025 (+0.8%)
$40,461 + $33,104
$73,565
2010
$1,017 (−0.5%)
$39,668 + $32,455
$72,123
2009
$1,022 (+2.3%)
$39,372 + $32,213
$71,585
2007
$999
$38,693 + $31,657
$70,350
Tax history for 306 Sparkes Rd
Year
Property tax
Land + Additions
Assessment*
2025
$1,473 (+1.2%)
$51,830 + $42,405
$94,235
2024
$1,455 (+1.3%)
$50,814 + $41,574
$92,388
2023
$1,437 (+0.7%)
$49,818 + $40,759
$90,577
2022
$1,427 (−0.3%)
$48,842 + $39,960
$88,802
2021
$1,431 (−3.4%)
$47,885 + $39,177
$87,062
2020
$1,481 (+20.7%)
$46,947 + $38,409
$85,356
2019
$1,227 (+1.2%)
$46,466 + $38,016
$84,482
2018
$1,213 (+3.5%)
$45,555 + $37,271
$82,826
2017
$1,172 (+4.9%)
$43,787 + $35,825
$79,612
2015
$1,117 (+1.6%)
$42,929 + $35,123
$78,052
2014
$1,099
$41,457 + $33,919
$75,376
2013
$1,098 (+5.6%)
$41,457 + $33,919
$75,376
2012
$1,040 (+1.5%)
$41,270 + $33,766
$75,036
2011
$1,025 (+0.8%)
$40,461 + $33,104
$73,565
2010
$1,017 (−0.5%)
$39,668 + $32,455
$72,123
2009
$1,022 (+2.3%)
$39,372 + $32,213
$71,585
2007
$999
$38,693 + $31,657
$70,350
*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
Upgrade the electrical service.
Electrical
Jun 11, 2016 • Final
Building history record
Work on electrical systems.
Electrical
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: 3
Exterior
Exterior Information
Building Style Type: L-Shape
Construction Type: Wood/Steel
Building Construction Quality: Fair
Property Information
Living Sq. Ft: 696
Ground Floor Sq. Ft: 696
Building Sq. Ft: 976
# of Stories: 1
Legal Description: 1972 FORM 63-061-69 MAP DEPT CHANGE FILE
Parking & Garage Information
Parking Type: Detached Garage
Garage/Parking Sq. Ft: 400
Garage / Carport Type: Detached
Lot Information
# of Buildings: 1
Land Sq. Ft: 31,620
Acres: 0.7259
Zoning Code: AR10
County Use Description: RURAL RESID-1 RESID
Financial
Assessor Information
Assessment Year: 2026
Public facts
Beds: 1
Baths: 1.0
Sq. Ft.: 696
Stories: 1.0
Lot Size: 0.73 acres
Style: Single Family Residential
Year Built: 1945
Year Renovated: 1950
County: Sonoma County
APN: 063310005000
Home facts updated by county records on Aug 13, 2026
Around this home
Schools
Gravenstein Elementary School
Charter K-5 • Assigned • 2.0mi
8/10
Hillcrest Middle School
Charter 6-8 • Assigned • 0.7mi
9/10
Analy High School
Public 9-12 • Assigned • 2.1mi
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
0.31% chance of being in a wildfire in next 30 years
3/10 Heat Factor
7 days above 90° 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
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
$647,000 – $783,000
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