1170 Shell Ave is a 1,008 square foot house on a 5,000 square foot lot with 2 bedrooms and 1 bathroom. - it last sold on August 20, 1993 for $148,000. Based on Redfin's Martinez data, we estimate the home's value is $563,106.
Single-familyProperty Type
1912Year Built
5,000 sq ftLot Size
$559Est. Price/Sq.Ft.
Source:Public Records
Redfin Estimate
$563,106
$415K since sold in August 1993$7,000 since October
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 7.5% higher than the average sale price ($524K) 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.
Permits
Aug 11, 2021 • Final
Building - residential electrical
Electrical
Aug 11, 2021 • Final
Building - residential mechanical
Install a new indoor electrical sub panel and a new Fujitsu heating and air conditioning heat pump.
Electrical
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
Heating & Cooling
Heating Type: Wall Furnace
Fireplace Information
# of Fireplaces: 1
Has Fireplace
Room Information
# of Rooms: 5
Exterior
Exterior Information
Physical Condition: Good
Building Style Type: Bungalow
Building Construction Quality: Average
Property Information
Subdivision Name: MARTINEZ LAND CO 04
Living Sq. Ft: 1,008
Ground Floor Sq. Ft: 1,008
Building Sq. Ft: 1,008
# of Stories: 1
Legal Description: MARTINEZ LAND #4 3 21
Parking & Garage Information
# of Parking Spaces: 1
Parking Type: Garage/Carport
Garage/Parking Sq. Ft: 283
Lot Information
# of Buildings: 1
Land Sq. Ft: 5,000
Legal Lot Number: 3
Legal Block Number: 21
Acres: 0.1148
Zoning Code: R-6
County Use Description: SINGLE FAMILY
Financial
Assessor Information
Assessment Year: 2026
Public facts
Beds: 2
Baths: 1.0
Sq. Ft.: 1,008
Stories: 1.0
Lot Size: 5,000 square feet
Style: Single Family Residential
Year Built: 1912
Year Renovated: 1912
County: Contra Costa County
APN: 3751920038
Home facts updated by county records on Oct 30, 2026
Around this home
Schools
Morello Park Elementary School
Public K-5 • Assigned • 1.2mi
9/10
Martinez Junior High School
Public 6-8 • Assigned • 0.7mi
7/10
Alhambra Senior High School
Public 9-12 • Assigned • 0.9mi
8/10
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
2% chance of being in a wildfire in next 30 years
4/10 Heat Factor
7 days above 97° 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
13 unhealthy days expected this year, 13 days in 30 years
Provided by First Street
Historical weather
Martinez, CA • 94553
Average low and high temperatures (°F)
60
43
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45
70
49
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49
77
53
80
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83
57
87
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83
61
74
54
64
49
56
46
Jan
Feb
Mar
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May
Jun
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Aug
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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
$535,000 – $648,000
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