bridgeMLS, Bay East AOR, or Contra Costa AOR #10242071
Nov 14, 1997
Listing Removed
—
Oct 7, 1997
Sold
$175,000
$99/sq ft
Aug 5, 1997
Listed
$197,500
$112/sq ft
UNIQUE PROP-.47 ACRE LOT/3BDRM/1.5BATH PLUS FAMILY RM/HDWD FLRS/SOME UPDATING/LRGE BACK LOT/LOTS OF POSSIBILITIES ON THIS ONE/
bridgeMLS, Bay East AOR, or Contra Costa AOR #27242071
Nov 14, 1997
Sold
$175,000
$99/sq ft
Oct 7, 1997
Listing Removed
—
Aug 5, 1997
Listed
$197,500
$112/sq ft
Year
Property tax
Land + Additions
Assessment*
2025
$6,068 (+2.7%)
$151,302 + $321,025
$472,327
2024
$5,906 (+2.1%)
$148,336 + $314,731
$463,067
2023
$5,786 (+1.5%)
$145,428 + $308,560
$453,988
2022
$5,700 (+2.6%)
$142,577 + $302,510
$445,087
2021
$5,553 (+0.8%)
$139,782 + $296,579
$436,361
2020
$5,508 (+1.2%)
$137,042 + $290,764
$427,806
2019
$5,440 (+4.0%)
$135,637 + $287,783
$423,420
2018
$5,230 (+3.6%)
$132,978 + $282,141
$415,119
2017
$5,050 (+3.0%)
$127,815 + $271,186
$399,001
2016
$4,902 (+1.4%)
$127,815 + $271,186
$399,001
2015
$4,836 (+2.0%)
$125,309 + $265,869
$391,178
2014
$4,743 (+2.9%)
$121,010 + $256,747
$377,757
2013
$4,609 (+2.5%)
$121,010 + $256,747
$377,757
2012
$4,498 (+21.1%)
$120,464 + $255,587
$376,051
2011
$3,716 (+1.3%)
$118,102 + $250,576
$368,678
2010
$3,667 (+0.3%)
$115,787 + $186,938
$302,725
2009
$3,656 (+2.7%)
$114,922 + $185,541
$300,463
2008
$3,558
$115,196 + $185,982
$301,178
Tax history for 4312 Cowell Rd
Year
Property tax
Land + Additions
Assessment*
2025
$6,068 (+2.7%)
$151,302 + $321,025
$472,327
2024
$5,906 (+2.1%)
$148,336 + $314,731
$463,067
2023
$5,786 (+1.5%)
$145,428 + $308,560
$453,988
2022
$5,700 (+2.6%)
$142,577 + $302,510
$445,087
2021
$5,553 (+0.8%)
$139,782 + $296,579
$436,361
2020
$5,508 (+1.2%)
$137,042 + $290,764
$427,806
2019
$5,440 (+4.0%)
$135,637 + $287,783
$423,420
2018
$5,230 (+3.6%)
$132,978 + $282,141
$415,119
2017
$5,050 (+3.0%)
$127,815 + $271,186
$399,001
2016
$4,902 (+1.4%)
$127,815 + $271,186
$399,001
2015
$4,836 (+2.0%)
$125,309 + $265,869
$391,178
2014
$4,743 (+2.9%)
$121,010 + $256,747
$377,757
2013
$4,609 (+2.5%)
$121,010 + $256,747
$377,757
2012
$4,498 (+21.1%)
$120,464 + $255,587
$376,051
2011
$3,716 (+1.3%)
$118,102 + $250,576
$368,678
2010
$3,667 (+0.3%)
$115,787 + $186,938
$302,725
2009
$3,656 (+2.7%)
$114,922 + $185,541
$300,463
2008
$3,558
$115,196 + $185,982
$301,178
*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.
Public record
Public record
Zoning
Permits
Beds
3
Baths
2
Stories
1
Lot width
—
Lot depth
—
Lot size
0.47 Acres
Year renovated
1957
Sq. Ft.
2,082
Year built
1953
Style
Single Family Residential
County
Contra Costa County
APN
1340620077
Parking Spaces
—
Basement
—
Accessible
—
HOA Dues
—
Garage
—
Features
—
Last updated by owner on Aug 27, 2026.
RS10
Residential Single-Family District
The RS district is applied to areas of the city appropriate for single-family residential uses in neighborhoods at densities of 2.5 to 10 units per net acre, subject to appropriate standards. The RS zoning districts generally apply to the single-family residential districts with development existing at the time of the adoption of this development code. The specific allowable density for each parcel is shown on the zoning map by a numerical suffix residential density designator RS-10 corresponding to the minimum lot size 10000. The RS district is consistent with and implements the low density residential (LDR) land use designation of the general plan.
Permitted uses
Include but are not limited to:
Housing-Single unit
Housing-Senior
Recreation
Agriculture-Cropland
Agriculture-Grove / orchard / vineyard
Park & open space
Feb 22, 2013 • Final
Building
Construct a cabana featuring a full bathroom, office with storage, game room, furnace, and water heater. Install a new or replacement electrical sub-panel in the garage. The structure is not approved for use as a kitchen or secondary living unit.
ADU
Feb 22, 2013 • Final
Building
Replace the electrical panel and upgrade the service from 100 amps to 200 amps.
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
Parking
Parking Information
Has Attached Garage
Garage Spaces: 3
Covered Spaces: 3
Parking Features: Attached, RV/Boat Parking, Side Yard Access
Interior
Bathroom Information
# of Bathrooms Total: 2
# of Bathrooms Full: 1
# of Bathrooms Partial: 1
Interior Features
Interior Features: Family Room, Formal Dining Room, Kitchen/Family Combo, Workshop
Accessibility Features: Accessible Approach with Ramp
Laundry Features: In Garage
Street Level Features: 3 Bedrooms, 1 Bath, Main Entry
Flooring: Hardwood, Vinyl, Carpet
Room Information
Rooms Total: 7
Exterior
Building Information
Construction Materials: Wood Siding
Building Area Total: 1,762
Exterior Features
Roof: Shingle
Pool Information
Pool Features: Possible Pool Site
Property Information
Living Area: 1762
Living Area Units: Square Feet
Property Type: Residential
Property Sub Type: Single Family Residence
Year Built: 1957
Lot Information
Lot Size Square Feet: 20500
Lot Size Area: 0.47
Lot Size Units: Acres
Lot Size Acres: 0.47
Zoning: R10
Utilities
Utility Information
Water Source: Public
Sewer: Public Sewer
Heating & Cooling
Has Heating
Heating: Forced Air
Location
School Information
High School District: Mount Diablo (925) 682-8000
Public facts
Beds: 3
Baths: 2.0
Sq. Ft.: 2,082
Stories: 1.0
Lot Size: 0.47 acres
Style: Single Family Residential
Year Built: 1953
Year Renovated: 1957
County: Contra Costa County
APN: 1340620077
Home facts updated by county records on Aug 27, 2026
Around this home
Schools
Woodside Elementary School
Public K-5 • Assigned • 1.4mi
6/10
Oak Grove Middle School
Public 6-8 • Assigned • 2.1mi
4/10
Ygnacio Valley High School
Public 9-12 • Assigned • 1.9mi
3/10
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
5/10 Fire Factor
4% chance of being in a wildfire in next 30 years
4/10 Heat Factor
7 days above 96° expected this year, 14 days in 30 years
1/10 Wind Factor
Minimal risk of severe winds over next 30 years
9/10 Air Factor
18 unhealthy days expected this year, 19 days in 30 years
Provided by First Street
Historical weather
Concord, CA • 94518
Average low and high temperatures (°F)
61
41
64
44
72
49
71
50
79
55
83
57
83
58
90
60
86
60
79
55
65
47
57
45
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Sun exposure
In this area, properties receive around 11.5 hours in
June and 4.9 hours in December, placing it above the
U.S. average for solar exposure.
11.5 hrs
4.9 hrs
JuneDecember
Provided by Shadowmap
Estimated sale price
$744,000 – $901,000
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Property information provided by bridgeMLS, Bay East AOR, or Contra Costa AOR when last listed in 1997. This data may not match public records. Learn more.