643 Quinan St is a 1,878 square foot house on a 114.78 acre lot with 3 bedrooms and 3 bathrooms. - it last sold on August 03, 1988 for $82,500. Based on Redfin's Pinole data, we estimate the home's value is $1,005,834.
Single-familyProperty Type
1972Year Built
114.78 acresLot Size
$536Est. Price/Sq.Ft.
Source:Public Records
Redfin Estimate
$1,005,834
$923K since sold in August 1988$19K since September
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 25.9% higher than the average sale price ($799K) of 6 comparable homes.
*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
RMU
Residential Mixed Use Zoning District
The predominant use of this zoning district is residential. It also encourages the vertical and/or horizontal integration of commercial and/or office uses that are compatible with the residential development. This zoning district does not preclude development that is solely residential, but rather encourages a mix of uses.
Permitted uses
Include but are not limited to:
Bank
Convenience store
General retail
Retail-Grocery
Housing-Group
Housing-Single unit
Housing-Multiple units
Housing-Senior
Housing-Other
Office
Jun 11, 2024 • Final
Residential building
Remove and replace with new roofing materials.
Roofing
Apr 26, 2024 • Final
Residential mechanical
Replace the air conditioning unit with a similar model in the same location.
HVAC
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: 8
Exterior
Property Information
Subdivision Name: FERNANDEZ ADD
Living Sq. Ft: 1,878
Ground Floor Sq. Ft: 939
Building Sq. Ft: 1,878
# of Stories: 2
Legal Description: FERNANDEZ ADDN LOT 10 BLK J
Parking & Garage Information
Garage/Parking Sq. Ft: 528
Lot Information
# of Buildings: 1
Land Sq. Ft: 5,000,000
Legal Lot Number: 10
Legal Block Number: J
Acres: 114.7842
County Use Description: SINGLE FAMILY
Financial
Assessor Information
Assessment Year: 2026
Public facts
Beds: 3
Baths: 3.0
Sq. Ft.: 1,878
Stories: 2.0
Lot Size: 114.78 acres
Style: Single Family Residential
Year Built: 1972
Year Renovated: 1972
County: Contra Costa County
APN: 4011420058
Home facts updated by county records on Jul 13, 2026
Around this home
Schools
Collins Elementary School
Public K-6 • Assigned • 0.4mi
5/10
Pinole Middle School
Public 7-8 • Assigned • 0.9mi
3/10
Pinole Valley High School
Public 9-12 • Assigned • 1.1mi
7/10
Provided by GreatSchools
Lifestyle
Provided by Walk Score and Local Logic
Climate risks
9/10 Flood Factor
Estimated 80%+ chance 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
4/10 Heat Factor
7 days above 89° expected this year, 15 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
Pinole, CA • 94564
Average low and high temperatures (°F)
60
42
62
44
70
47
68
48
72
52
73
54
73
55
78
56
77
59
75
54
63
47
57
45
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Sun exposure
In this area, properties receive around 11.4 hours in
June and 4.9 hours in December, placing it above the
U.S. average for solar exposure.
11.4 hrs
4.9 hrs
JuneDecember
Provided by Shadowmap
Estimated sale price
$956,000 – $1.16M
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