5580 Oak Knoll Rd is a 1,862 square foot house on a 0.5 acre lot with 2 bedrooms and 2 bathrooms. - it last sold on August 31, 2004 for $500,000. Based on Redfin's El Sobrante data, we estimate the home's value is $740,854.
Single-familyProperty Type
1935Year Built
0.5 acresLot Size
$398Est. Price/Sq.Ft.
1 car garageParking
Source:Public Records
Redfin Estimate
$740,854
$241K since sold in August 2004$1,000 since October
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 2.9% higher than the average sale price ($720K) of 6 comparable homes.
bridgeMLS, Bay East AOR, or Contra Costa AOR #40330560
Apr 1, 2008
Listing Removed
—
Public Records
Aug 31, 2004
Sold
$500,000
$269/sq ft
bridgeMLS, Bay East AOR, or Contra Costa AOR #40027650
Aug 2, 2004
Listing Removed
—
Public Records
Sep 20, 1989
Sold
$275,000
$148/sq ft
Year
Property tax
Land + Additions
Assessment*
2026
$7,222 (+2.4%)
$241,150 + $227,755
$468,905
2025
$7,053 (+2.4%)
$241,150 + $227,755
$468,905
2024
$6,890 (+2.2%)
$236,422 + $223,290
$459,712
2023
$6,740 (+1.5%)
$231,787 + $218,912
$450,699
2022
$6,643 (+0.5%)
$227,243 + $214,620
$441,863
2021
$6,612 (+4.4%)
$222,788 + $210,412
$433,200
2020
$6,330 (+1.5%)
$218,420 + $206,287
$424,707
2019
$6,240 (+4.1%)
$216,181 + $204,172
$420,353
2018
$5,997 (+2.5%)
$211,943 + $200,169
$412,112
2017
$5,850 (+1.3%)
$203,714 + $192,398
$396,112
2016
$5,774 (+0.4%)
$203,714 + $192,398
$396,112
2015
$5,752 (+1.0%)
$199,720 + $188,626
$388,346
2014
$5,694 (+10.1%)
$192,868 + $182,154
$375,022
2013
$5,171 (+13.3%)
$192,868 + $182,154
$375,022
2012
$4,565 (−10.7%)
$174,857 + $165,143
$340,000
2011
$5,114 (+14.0%)
$162,257 + $153,243
$315,500
2010
$4,485 (−8.0%)
$184,543 + $174,291
$358,834
2009
$4,874 (−12.4%)
$165,857 + $156,643
$322,500
2008
$5,565
$183,600 + $173,400
$357,000
Tax history for 5580 Oak Knoll Rd
Year
Property tax
Land + Additions
Assessment*
2026
$7,222 (+2.4%)
$241,150 + $227,755
$468,905
2025
$7,053 (+2.4%)
$241,150 + $227,755
$468,905
2024
$6,890 (+2.2%)
$236,422 + $223,290
$459,712
2023
$6,740 (+1.5%)
$231,787 + $218,912
$450,699
2022
$6,643 (+0.5%)
$227,243 + $214,620
$441,863
2021
$6,612 (+4.4%)
$222,788 + $210,412
$433,200
2020
$6,330 (+1.5%)
$218,420 + $206,287
$424,707
2019
$6,240 (+4.1%)
$216,181 + $204,172
$420,353
2018
$5,997 (+2.5%)
$211,943 + $200,169
$412,112
2017
$5,850 (+1.3%)
$203,714 + $192,398
$396,112
2016
$5,774 (+0.4%)
$203,714 + $192,398
$396,112
2015
$5,752 (+1.0%)
$199,720 + $188,626
$388,346
2014
$5,694 (+10.1%)
$192,868 + $182,154
$375,022
2013
$5,171 (+13.3%)
$192,868 + $182,154
$375,022
2012
$4,565 (−10.7%)
$174,857 + $165,143
$340,000
2011
$5,114 (+14.0%)
$162,257 + $153,243
$315,500
2010
$4,485 (−8.0%)
$184,543 + $174,291
$358,834
2009
$4,874 (−12.4%)
$165,857 + $156,643
$322,500
2008
$5,565
$183,600 + $173,400
$357,000
*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.
Permits
Nov 5, 2025 • Final
Solarapp+ approved
Install roof-mounted solar panels with an energy storage system.
Battery
Electrical
Solar
Sep 5, 2025 • Final
Solarapp+ approved
Install a roof-mounted photovoltaic system with two batteries.
Battery
Electrical
Solar
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
Room Information
# of Rooms: 7
Exterior
Property Information
Living Sq. Ft: 1,862
Ground Floor Sq. Ft: 788
Building Sq. Ft: 1,862
# of Stories: 2
Legal Description: NAYLOR TRACT POR 80
Parking & Garage Information
Garage/Parking Sq. Ft: 682
Lot Information
# of Buildings: 1
Land Sq. Ft: 21,700
Acres: 0.4982
Zoning Code: R-10
County Use Description: SINGLE FAMILY
Financial
Assessor Information
Assessment Year: 2026
Public facts
Beds: 2
Baths: 2.0
Sq. Ft.: 1,862
Stories: 2.0
Lot Size: 0.5 acres
Style: Single Family Residential
Year Built: 1935
Year Renovated: 1980
County: Contra Costa County
APN: 4301320174
Home facts updated by county records on Oct 30, 2026
Around this home
Schools
K - 12
Preschool & daycare
Valley View Elementary School
Public K-6 • Assigned • 0.6mi
4/10
Betty Reid Soskin Middle
Public 6-8 • Assigned • 1.2mi
2/10
De Anza Senior High School
Public 9-12 • Assigned • 0.8mi
4/10
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
0.46% chance of being in a wildfire in next 30 years
3/10 Heat Factor
7 days above 88° expected this year, 14 days in 30 years
1/10 Wind Factor
Minimal risk of severe winds over next 30 years
8/10 Air Factor
15 unhealthy days expected this year, 15 days in 30 years
Provided by First Street
Historical weather
El Sobrante, CA • 94803
Average low and high temperatures (°F)
59
44
61
45
67
49
65
49
69
51
68
52
69
54
73
55
73
58
69
53
61
48
57
45
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 5 hours in December, placing it above the
U.S. average for solar exposure.
11.1 hrs
5 hrs
JuneDecember
Provided by Shadowmap
Estimated sale price
$704,000 – $852,000
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