1670 Delta Rd is a 986 square foot house on a 0.25 acre lot with 2 bedrooms and 1 bathroom. Based on Redfin's Knightsen data, we estimate the home's value is $496,281.
Single-familyProperty Type
1904Year Built
0.25 acresLot Size
$503Est. Price/Sq.Ft.
Source:Public Records
Redfin Estimate
$496,281
$56K since July
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 13.8% lower than the average sale price ($576K) of 6 comparable homes.
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Earn from this home
Sell
$469,574
Est. take-home
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Rent
$1,780/mo
Redfin rental estimate
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Market trends in 94548, CA
Last updated July 2026
Sale-to-List Price
97.3%
0.0% MoM
Median sale price
$399K
$0 MoM
Avg. days on market
0d
0 days MoM
Recently sold homes
1
0 MoM
Provided by Redfin
Sale history for 1670 Delta Rd
As the MLS and public records start to fill up, we'll list the details here.
Year
Property tax
Land + Additions
Assessment*
2025
$1,446 (+1.8%)
$48,476 + $81,651
$130,127
2024
$1,421 (+1.5%)
$47,526 + $80,050
$127,576
2023
$1,401 (+1.8%)
$46,595 + $78,481
$125,076
2022
$1,376 (+2.0%)
$45,682 + $76,943
$122,625
2021
$1,350 (+0.4%)
$44,787 + $75,435
$120,222
2020
$1,345 (−2.8%)
$43,909 + $73,956
$117,865
2019
$1,384 (+5.3%)
$43,459 + $73,198
$116,657
2018
$1,314 (−5.9%)
$42,607 + $71,763
$114,370
2017
$1,397 (+17.5%)
$40,953 + $68,977
$109,930
2016
$1,189 (+0.6%)
$40,953 + $68,977
$109,930
2015
$1,182 (+1.0%)
$40,150 + $67,625
$107,775
2014
$1,170 (+0.7%)
$38,773 + $65,306
$104,079
2013
$1,162 (+2.5%)
$38,773 + $65,306
$104,079
2012
$1,134 (+1.1%)
$38,598 + $65,011
$103,609
2011
$1,122 (+0.7%)
$37,842 + $63,737
$101,579
2010
$1,114 (−0.5%)
$37,100 + $62,488
$99,588
2009
$1,119 (+2.9%)
$36,823 + $62,021
$98,844
2008
$1,087
$36,911 + $62,169
$99,080
Tax history for 1670 Delta Rd
Year
Property tax
Land + Additions
Assessment*
2025
$1,446 (+1.8%)
$48,476 + $81,651
$130,127
2024
$1,421 (+1.5%)
$47,526 + $80,050
$127,576
2023
$1,401 (+1.8%)
$46,595 + $78,481
$125,076
2022
$1,376 (+2.0%)
$45,682 + $76,943
$122,625
2021
$1,350 (+0.4%)
$44,787 + $75,435
$120,222
2020
$1,345 (−2.8%)
$43,909 + $73,956
$117,865
2019
$1,384 (+5.3%)
$43,459 + $73,198
$116,657
2018
$1,314 (−5.9%)
$42,607 + $71,763
$114,370
2017
$1,397 (+17.5%)
$40,953 + $68,977
$109,930
2016
$1,189 (+0.6%)
$40,953 + $68,977
$109,930
2015
$1,182 (+1.0%)
$40,150 + $67,625
$107,775
2014
$1,170 (+0.7%)
$38,773 + $65,306
$104,079
2013
$1,162 (+2.5%)
$38,773 + $65,306
$104,079
2012
$1,134 (+1.1%)
$38,598 + $65,011
$103,609
2011
$1,122 (+0.7%)
$37,842 + $63,737
$101,579
2010
$1,114 (−0.5%)
$37,100 + $62,488
$99,588
2009
$1,119 (+2.9%)
$36,823 + $62,021
$98,844
2008
$1,087
$36,911 + $62,169
$99,080
*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.
Permits
Mar 27, 2024 • Final
Building - residential re-roof
Re-roof a residential building with new shingles. A cool roof or cool roof exception is required at the final inspection.
Roofing
Sep 14, 2022 • Final
Building - residential solar photovoltaic
Install a roof-mounted solar photovoltaic system on a residential building.
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: 5
Exterior
Property Information
Subdivision Name: KNIGHTSEN
Living Sq. Ft: 986
Ground Floor Sq. Ft: 986
Building Sq. Ft: 986
# of Stories: 1
Legal Description: TOWN OF KNIGHTSEN LOTS 11 & 14 BLK 1
Parking & Garage Information
Garage/Parking Sq. Ft: 200
Lot Information
# of Buildings: 1
Land Sq. Ft: 10,900
Legal Lot Number: 11
Legal Block Number: 1
Acres: 0.2502
Zoning Code: R-6
County Use Description: SINGLE FAMILY
Financial
Assessor Information
Assessment Year: 2026
Public facts
Beds: 2
Baths: 1.0
Sq. Ft.: 986
Stories: 1.0
Lot Size: 0.25 acres
Style: Single Family Residential
Year Built: 1904
Year Renovated: 1941
County: Contra Costa County
APN: 0200730109
Home facts updated by county records on Jul 13, 2026
Around this home
Schools
Knightsen Elementary School
Public K-8 • Assigned • 0.3mi
6/10
Liberty High School
Public 9-12 • Assigned • 2.7mi
7/10
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
1/10 Fire Factor
Unlikely to be in a wildfire in next 30 years
6/10 Heat Factor
7 days above 101° 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
17 unhealthy days expected this year, 18 days in 30 years
Provided by First Street
Historical weather
Knightsen, CA • 94548
Average low and high temperatures (°F)
59
40
63
45
72
50
73
51
81
56
88
59
89
59
93
62
88
61
79
55
64
47
56
44
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Sun exposure
In this area, properties receive around 12.6 hours in
June and 4.7 hours in December, placing it above the
U.S. average for solar exposure.
12.6 hrs
4.7 hrs
JuneDecember
Provided by Shadowmap
Estimated sale price
$472,000 – $571,000
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