768 Shell Ave is a 2,092 square foot house on a 6,448 square foot lot with 4 bedrooms and 2 bathrooms. Based on Redfin's Martinez data, we estimate the home's value is $751,697.
Single-familyProperty Type
1956Year Built
6,448 sq ftLot Size
$359Est. Price/Sq.Ft.
Source:Public Records
Redfin Estimate
$751,697
$1,000 since August
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 6.2% lower than the average sale price ($801K) 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
$2,081 (+3.3%)
$19,219 + $56,075
$75,294
2024
$2,015 (+5.1%)
$18,843 + $54,976
$73,819
2023
$1,918 (+4.8%)
$18,474 + $53,899
$72,373
2022
$1,830 (+9.7%)
$18,112 + $52,843
$70,955
2021
$1,667 (+4.7%)
$17,757 + $51,807
$69,564
2020
$1,592 (+4.4%)
$17,409 + $50,792
$68,201
2019
$1,525 (+4.7%)
$17,231 + $50,272
$67,503
2018
$1,457 (+2.0%)
$16,894 + $49,287
$66,181
2017
$1,428 (+13.3%)
$16,239 + $47,374
$63,613
2016
$1,260 (+1.4%)
$16,239 + $47,374
$63,613
2015
$1,242 (+2.0%)
$15,921 + $46,446
$62,367
2014
$1,218 (+1.2%)
$15,375 + $44,853
$60,228
2013
$1,204 (+2.8%)
$15,375 + $44,853
$60,228
2012
$1,171 (+5.4%)
$15,306 + $44,651
$59,957
2011
$1,111 (+0.4%)
$15,006 + $43,776
$58,782
2010
$1,106 (+1.2%)
$14,712 + $42,918
$57,630
2009
$1,093 (+2.6%)
$14,603 + $42,598
$57,201
2008
$1,065
$14,638 + $42,700
$57,338
Tax history for 768 Shell Ave
Year
Property tax
Land + Additions
Assessment*
2025
$2,081 (+3.3%)
$19,219 + $56,075
$75,294
2024
$2,015 (+5.1%)
$18,843 + $54,976
$73,819
2023
$1,918 (+4.8%)
$18,474 + $53,899
$72,373
2022
$1,830 (+9.7%)
$18,112 + $52,843
$70,955
2021
$1,667 (+4.7%)
$17,757 + $51,807
$69,564
2020
$1,592 (+4.4%)
$17,409 + $50,792
$68,201
2019
$1,525 (+4.7%)
$17,231 + $50,272
$67,503
2018
$1,457 (+2.0%)
$16,894 + $49,287
$66,181
2017
$1,428 (+13.3%)
$16,239 + $47,374
$63,613
2016
$1,260 (+1.4%)
$16,239 + $47,374
$63,613
2015
$1,242 (+2.0%)
$15,921 + $46,446
$62,367
2014
$1,218 (+1.2%)
$15,375 + $44,853
$60,228
2013
$1,204 (+2.8%)
$15,375 + $44,853
$60,228
2012
$1,171 (+5.4%)
$15,306 + $44,651
$59,957
2011
$1,111 (+0.4%)
$15,006 + $43,776
$58,782
2010
$1,106 (+1.2%)
$14,712 + $42,918
$57,630
2009
$1,093 (+2.6%)
$14,603 + $42,598
$57,201
2008
$1,065
$14,638 + $42,700
$57,338
*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.
Zoning
R-6.0
One Family Residential District
The R Residential Districts are included in the zoning regulations to achieve the following purposes: Reserve appropriately located areas tar residential living in a variety of types of dwellings, at a reasonable range of population densities consistent with sound standards of public health and safety; Ensure adequate light, air and privacy for each dwelling unit; Provide adequate amounts of private open space in proximity to each dwelling unit; Provide space for community facilities needed to complement urban residential areas; Provide space for institutions which require a residential environment; Minimize traffic congestion and to avoid the overloading of utilities by preventing the construction of buildings of excessive size in relation to the land around them; Provide necessary space for off-street parking of automobiles and, where appropriate for off-street loading of trucks; Protect residential properties from the hazs, noise and congestion created by commercial and industrial traffic; Protect residential properties from noise, illumination, unsightliness, odors, dust, dirt, smoke, vibration, heat, glare and other objectionable influences; Protect residential properties from fire, explosion, noxious fumes and other hazards.
Permitted uses
Include but are not limited to:
Agriculture
Agriculture-Other
Housing-Group
Housing-Single unit
Housing-Multiple units
Housing-Senior
Housing-Other
Property details
Interior
Room Information
# of Rooms: 8
Exterior
Property Information
Subdivision Name: HARBOR VIEW HEIGHTS
Living Sq. Ft: 2,092
Ground Floor Sq. Ft: 1,401
Building Sq. Ft: 2,092
# of Stories: 1
Legal Description: HARBOR VIEW HEIGHTS LOT 1
Lot Information
# of Buildings: 1
Land Sq. Ft: 6,448
Legal Lot Number: 1
Acres: 0.148
County Use Description: SINGLE FAMILY
Financial
Assessor Information
Assessment Year: 2026
Public facts
Beds: 4
Baths: 2.0
Sq. Ft.: 2,092
Stories: 1.0
Lot Size: 6,448 square feet
Style: Single Family Residential
Year Built: 1956
Year Renovated: 1956
County: Contra Costa County
APN: 3751000021
Home facts updated by county records on Jul 13, 2026
Around this home
Schools
John Muir Elementary School
Public K-5 • Assigned • 0.5mi
6/10
Martinez Junior High School
Public 6-8 • Assigned • 0.6mi
7/10
Alhambra Senior High School
Public 9-12 • Assigned • 0.4mi
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
5/10 Fire Factor
4% 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
62
45
70
49
70
49
77
53
80
55
80
56
87
59
84
59
78
56
64
49
56
46
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
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
$715,000 – $865,000
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