820 Steffa St is a 1,101 square foot house on a 4,080 square foot lot with 3 bedrooms and 2 bathrooms. Based on Redfin's Bay Point data, we estimate the home's value is $542,288.
Single-familyProperty Type
1994Year Built
4,080 sq ftLot Size
$493Est. Price/Sq.Ft.
Source:Public Records
Redfin Estimate
$542,288
$11K since September
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 12.1% lower than the average sale price ($617K) 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
$4,673 (+3.0%)
$86,672 + $207,115
$293,787
2024
$4,539 (+2.2%)
$84,973 + $203,054
$288,027
2023
$4,443 (+1.0%)
$83,307 + $199,073
$282,380
2022
$4,397 (+2.6%)
$81,674 + $195,170
$276,844
2021
$4,286 (+1.4%)
$80,073 + $191,344
$271,417
2020
$4,225 (+1.4%)
$78,503 + $187,593
$266,096
2019
$4,169 (+3.4%)
$77,699 + $185,670
$263,369
2018
$4,033 (+3.1%)
$76,176 + $182,030
$258,206
2017
$3,913 (+2.9%)
$73,219 + $174,962
$248,181
2016
$3,801 (+1.2%)
$73,219 + $174,962
$248,181
2015
$3,757 (+1.7%)
$71,784 + $171,532
$243,316
2014
$3,695 (+2.5%)
$69,321 + $165,647
$234,968
2013
$3,606 (+7.7%)
$69,321 + $165,647
$234,968
2012
$3,349 (+14.2%)
$69,008 + $164,899
$233,907
2011
$2,933 (−7.1%)
$63,725 + $152,275
$216,000
2010
$3,158 (−5.3%)
$54,284 + $129,716
$184,000
2009
$3,335 (+2.4%)
$60,333 + $144,167
$204,500
2008
$3,259
$65,991 + $157,687
$223,678
Tax history for 820 Steffa St
Year
Property tax
Land + Additions
Assessment*
2025
$4,673 (+3.0%)
$86,672 + $207,115
$293,787
2024
$4,539 (+2.2%)
$84,973 + $203,054
$288,027
2023
$4,443 (+1.0%)
$83,307 + $199,073
$282,380
2022
$4,397 (+2.6%)
$81,674 + $195,170
$276,844
2021
$4,286 (+1.4%)
$80,073 + $191,344
$271,417
2020
$4,225 (+1.4%)
$78,503 + $187,593
$266,096
2019
$4,169 (+3.4%)
$77,699 + $185,670
$263,369
2018
$4,033 (+3.1%)
$76,176 + $182,030
$258,206
2017
$3,913 (+2.9%)
$73,219 + $174,962
$248,181
2016
$3,801 (+1.2%)
$73,219 + $174,962
$248,181
2015
$3,757 (+1.7%)
$71,784 + $171,532
$243,316
2014
$3,695 (+2.5%)
$69,321 + $165,647
$234,968
2013
$3,606 (+7.7%)
$69,321 + $165,647
$234,968
2012
$3,349 (+14.2%)
$69,008 + $164,899
$233,907
2011
$2,933 (−7.1%)
$63,725 + $152,275
$216,000
2010
$3,158 (−5.3%)
$54,284 + $129,716
$184,000
2009
$3,335 (+2.4%)
$60,333 + $144,167
$204,500
2008
$3,259
$65,991 + $157,687
$223,678
*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.
Zoning and permits
Zoning
Permits
P-1
Planned Unit District
A large-scale integrated development or a general plan special area of concern provides an opportunity for, and requires cohesive design when flexible regulations are applied; whereas the application of conventional regulation, designed primarily for individual lot development, to a large-scale development or special area may create a monotonous and inappropriate neighborhood. The planned unit district is intended to allow diversification in the relationship of various uses, buildings, structures, lot sizes and open space while insuring substantial compliance with the general plan and the intent of the county code in requiring adequate standards necessary to satisfy the requirements of the public health, safety and general welfare. These standards shall be observed without unduly inhibiting the advantages of large-scale site or special area planning.
Permitted uses
Include but are not limited to:
Housing-Single unit
Jan 30, 2010 • Final
Building/residential/p/pool
Install a private swimming pool.
Pool and hot tub
Jan 30, 2010 • Final
Building/commercial/mic/misc.
Work on a retaining wall and fence.
Grading
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
Pool Information
Has Pool
Property Information
Subdivision Name: SUBDIVISION 7597
Living Sq. Ft: 1,101
Ground Floor Sq. Ft: 1,101
Building Sq. Ft: 1,101
# of Stories: 1
Legal Description: T7597 L61
Parking & Garage Information
Garage/Parking Sq. Ft: 465
Lot Information
# of Buildings: 1
Land Sq. Ft: 4,080
Legal Lot Number: 61
Acres: 0.0937
Zoning Code: P-1
County Use Description: SINGLE FAMILY
Financial
Assessor Information
Assessment Year: 2026
Public facts
Beds: 3
Baths: 2.0
Sq. Ft.: 1,101
Stories: 1.0
Lot Size: 4,080 square feet
Style: Single Family Residential
Year Built: 1994
Year Renovated: 1994
County: Contra Costa County
APN: 0991700402
Home facts updated by county records on Jul 13, 2026
Around this home
Schools
Shore Acres Elementary School
Public K-5 • Assigned • 0.8mi
2/10
Riverview Middle School
Public 6-8 • Assigned • 0.9mi
3/10
Mt. Diablo High School
Public 9-12 • Assigned • 4.3mi
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
5% chance of being in a wildfire in next 30 years
5/10 Heat Factor
7 days above 98° 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
Bay Point, CA • 94565
Average low and high temperatures (°F)
60
41
64
46
72
52
72
52
79
56
85
60
87
61
91
63
85
63
78
57
64
48
56
45
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Sun exposure
In this area, properties receive around 12.1 hours in
June and 4.8 hours in December, placing it above the
U.S. average for solar exposure.
12.1 hrs
4.8 hrs
JuneDecember
Provided by Shadowmap
Estimated sale price
$516,000 – $624,000
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