100 Ruby Ct is a 1,922 square foot house on a 7,840 square foot lot with 4 bedrooms and 3 bathrooms. - it last sold on January 07, 1987 for $154,000. Based on Redfin's Hercules data, we estimate the home's value is $842,894.
Single-familyProperty Type
1987Year Built
7,840 sq ftLot Size
$439Est. Price/Sq.Ft.
Source:Public Records
Redfin Estimate
$842,894
$689K since sold in January 1987$5,000 since September
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 7.4% lower than the average sale price ($911K) 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
RS-L
Residential Single-Family Low Density District
To provide areas for single-family housing on smaller lots that will generally be developed as part of a larger planned subdivision where a limited number of models of varied exterior designs are built in a random pattern on individual lots with a gross density of 2 to 7 units per acre and a minimum parcel size of 6,000 sq ft unless a smaller lot size is allowed by an approved planned development (PD).
Permitted uses
Include but are not limited to:
Housing-Multiple units
Property details
Interior
Room Information
# of Rooms: 9
Exterior
Property Information
Living Sq. Ft: 1,922
Ground Floor Sq. Ft: 1,186
Building Sq. Ft: 1,922
# of Stories: 2
Legal Description: T6156A L0018 B
Parking & Garage Information
Garage/Parking Sq. Ft: 528
Lot Information
# of Buildings: 1
Land Sq. Ft: 7,840
Legal Lot Number: 18
Acres: 0.18
County Use Description: SINGLE FAMILY
Financial
Assessor Information
Assessment Year: 2026
Public facts
Beds: 4
Baths: 3.0
Sq. Ft.: 1,922
Stories: 2.0
Lot Size: 7,840 square feet
Style: Single Family Residential
Year Built: 1987
Year Renovated: 1987
County: Contra Costa County
APN: 4070410180
Home facts updated by county records on Jul 13, 2026
Around this home
Schools
Ohlone Elementary School
Public K-5 • Assigned • 0.3mi
9/10
Hercules Middle School
Public 6-8 • Assigned • 1.1mi
7/10
Hercules High School
Public 9-12 • Assigned • 1.1mi
9/10
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
4/10 Fire Factor
0.93% chance of being 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
Hercules, CA • 94547
Average low and high temperatures (°F)
60
41
62
44
69
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67
47
73
52
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75
56
79
57
77
59
75
53
63
47
57
45
Jan
Feb
Mar
Apr
May
Jun
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Aug
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Oct
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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
$801,000 – $970,000
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