First time on the market in 60 years! Discover an incredible opportunity with a detached ADU in the heart of Concord, CA. Whether you're searching for your dream home location, building generational wealth, or eyeing your next investment opportunity, this versatile property checks all the boxes. The 2,586 sq ft main home offers 4 bedrooms and 4 bathrooms, featuring a spacious primary suite with private patio and a separate mother-in-law suite complete with its own bath and kitchenette. In addition there is a fully detached 352 sq ft ADU studio that includes a loft, full bath, and single-wall kitchen with island perfect for rental income, multigenerational living, or a savvy house hack. Sitting on a flat, .30-acre lot with a 2-car garage carport and a massive backyard, the potential is endless! Explore adding a pool, doing an ADU expansion, creating a garden oasis, or even examine the potential of a lot split. Located near beautiful parks, Todos Santos Plaza, BART, Lime Ridge trails, and freeway access in the highly desirable Crestwood area. A rare blend of space, location, and future upside - don’t miss your chance to make this property your dream oasis!
Single-familyProperty Type
1949Year Built
0.3 acresLot Size
$481Est. Price/Sq.Ft.
2 car garageParking
Listed by Cameron Chatterton•DRE #02147088• Twin Oaks Real Estate
Bought with Monica Guerra•DRE #01989127• eXp Realty of California, Inc.
bridgeMLS, Bay East AOR, or Contra Costa AOR #41104457
Jan 28, 2026
Sold
$930,000
$360/sq ft
Aug 13, 2025
Pending
—
Aug 1, 2025
Price Changed
$917,999
$355/sq ft
Jul 11, 2025
Listed
$949,000
$367/sq ft
Year
Property tax
Land + Additions
Assessment*
2025
$10,172 (+411.7%)
$525,300 + $321,300
$846,600
2024
$1,988 (+3.2%)
$515,000 + $315,000
$830,000
2023
$1,927 (+2.8%)
$26,398 + $66,573
$92,971
2022
$1,875 (+3.6%)
$25,881 + $65,268
$91,149
2021
$1,809 (+1.6%)
$25,374 + $63,989
$89,363
2020
$1,780 (+1.2%)
$24,877 + $62,735
$87,612
2019
$1,758 (+4.7%)
$24,622 + $62,092
$86,714
2018
$1,679 (+4.5%)
$24,140 + $60,875
$85,015
2017
$1,606 (+5.0%)
$23,203 + $58,512
$81,715
2016
$1,530 (+3.6%)
$23,203 + $58,512
$81,715
2015
$1,477 (+4.1%)
$22,749 + $57,365
$80,114
2014
$1,419 (+4.3%)
$21,970 + $55,398
$77,368
2013
$1,360 (+4.1%)
$21,970 + $55,398
$77,368
2012
$1,307 (+2.3%)
$21,871 + $55,148
$77,019
2011
$1,277 (+2.0%)
$21,443 + $54,067
$75,510
2010
$1,251 (+0.2%)
$21,023 + $53,007
$74,030
2009
$1,248 (+9.5%)
$20,866 + $52,611
$73,477
2008
$1,140
$20,916 + $52,736
$73,652
Tax history for 1878 Denkinger Rd
Year
Property tax
Land + Additions
Assessment*
2025
$10,172 (+411.7%)
$525,300 + $321,300
$846,600
2024
$1,988 (+3.2%)
$515,000 + $315,000
$830,000
2023
$1,927 (+2.8%)
$26,398 + $66,573
$92,971
2022
$1,875 (+3.6%)
$25,881 + $65,268
$91,149
2021
$1,809 (+1.6%)
$25,374 + $63,989
$89,363
2020
$1,780 (+1.2%)
$24,877 + $62,735
$87,612
2019
$1,758 (+4.7%)
$24,622 + $62,092
$86,714
2018
$1,679 (+4.5%)
$24,140 + $60,875
$85,015
2017
$1,606 (+5.0%)
$23,203 + $58,512
$81,715
2016
$1,530 (+3.6%)
$23,203 + $58,512
$81,715
2015
$1,477 (+4.1%)
$22,749 + $57,365
$80,114
2014
$1,419 (+4.3%)
$21,970 + $55,398
$77,368
2013
$1,360 (+4.1%)
$21,970 + $55,398
$77,368
2012
$1,307 (+2.3%)
$21,871 + $55,148
$77,019
2011
$1,277 (+2.0%)
$21,443 + $54,067
$75,510
2010
$1,251 (+0.2%)
$21,023 + $53,007
$74,030
2009
$1,248 (+9.5%)
$20,866 + $52,611
$73,477
2008
$1,140
$20,916 + $52,736
$73,652
*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
4
Baths
2
Stories
2
Lot width
—
Lot depth
—
Lot size
0.3 Acres
Year renovated
1960
Sq. Ft.
1,875
Year built
1949
Style
Single Family Residential
County
Contra Costa County
APN
1151310511
Parking Spaces
—
Basement
—
Accessible
—
HOA Dues
—
Garage
—
Features
—
Last updated by owner on Jul 13, 2026.
RS8
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-8 corresponding to the minimum lot size 8000. 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
Nov 21, 2025 • Final
Solar pv
Install a solar photovoltaic system and an energy storage system. Upgrade the main electrical service panel.
Battery
Electrical
Solar
Oct 15, 2024 • Active
Miscellaneous mechanical, electrical or plumbing
Replace the main electrical service panel for a residential building.
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
Garage Spaces: 2
Has Carport
Covered Spaces: 2
Parking Features: Carport - 2 Or More, Drive Thru Garage
Interior
Virtual Tour
Bathroom Information
# of Bathrooms Total: 4
# of Bathrooms Full: 3
# of Bathrooms Partial: 1
ADU Baths Full: 1
Interior Features
Interior Features: Family Room, In-Law Floorplan, Storage, Pantry
Appliances: Dishwasher, Gas Range, Refrigerator, Dryer, Washer
Laundry Features: 220 Volt Outlet, Dryer, Laundry Room, Washer
Upper Level Features: 1 Bath, 2 Bedrooms
Street Level Features: 3 Bedrooms, 4 Baths, Laundry Facility, Main Entry, Primary Bedrm Suites - 2
Fireplaces Total: 1
Has Fireplace
Flooring: Carpet, Hardwood, Laminate, Tile
Room Information
Kitchen Features: 220 Volt Outlet,Dishwasher,Gas Range/Cooktop,Pantry,Refrigerator,Stone Counters
ADU Has Kitchen
Rooms Total: 9
Room Type: Family Room, In-Law Quarters, Kitchen, Laundry, Living Room, Master Bathroom, Master Bedroom, Storage
Fireplace Features: Living Room, Wood Burning
Exterior
Building Information
Construction Materials: Brick, Wood Shingles, Wood Siding
Building Area Total: 2,586
Foundation Details: Raised
Exterior Features
Patio And Porch Features: Deck, Patio
Exterior Features: Back Yard, Side Yard, Storage, Garden, Landscape Back, Landscape Front, Yard Space
Fencing: Chain Link
Roof: Shingle
Property Information
Living Area: 2586
Living Area Units: Square Feet
Property Type: Residential
Property Sub Type: Single Family Residence
Year Built: 1949
Has ADU
Lot Information
Lot Size Square Feet: 13104
Lot Size Area: 0.3
Lot Size Units: Acres
Lot Size Acres: 0.3
Lot Features: Premium Lot, Dead End
Utilities
Utility Information
Electric: Photovoltaics Seller Owned, 220 Volts in Kitchen
Heating & Cooling
Has Heating
Heating: Forced Air, Wall Furnace
Cooling: Ceiling Fan(s), Central Air, Wall/Window Unit(s)
Public facts
Beds: 4
Baths: 2.0
Sq. Ft.: 1,875
Stories: 2.0
Lot Size: 0.3 acres
Style: Single Family Residential
Year Built: 1949
Year Renovated: 1960
County: Contra Costa County
APN: 1151310511
Home facts updated by county records on Jul 13, 2026
Around this home
Schools
Mountain View Elementary School
Public K-5 • Assigned • 0.5mi
6/10
El Dorado Middle School
Public 6-8 • Assigned • 0.5mi
3/10
Concord High School
Public 9-12 • Assigned • 0.4mi
5/10
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
6% 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 • 94521
Average low and high temperatures (°F)
60
40
64
43
72
47
72
48
80
52
85
55
85
56
91
59
86
58
79
54
64
46
57
44
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Sun exposure
In this area, properties receive around 11.8 hours in
June and 4.8 hours in December, placing it above the
U.S. average for solar exposure.
11.8 hrs
4.8 hrs
JuneDecember
Provided by Shadowmap
Estimated sale price
$1.18M – $1.43M
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Property information provided by bridgeMLS, Bay East AOR, or Contra Costa AOR when last listed in 2025. This data may not match public records. Learn more.