228 Explorer Way is a 2,271 square foot house on a 9,937 square foot lot with 4 bedrooms and 3 bathrooms. - it last sold on May 20, 2015 for $659,000. Based on Redfin's Martinez data, we estimate the home's value is $1,020,177.
Single-familyProperty Type
2004Year Built
9,937 sq ftLot Size
$449Est. Price/Sq.Ft.
2 car garageParking
Source:Public Records
Redfin Estimate
$1,020,177
$361K since sold in May 2015$14K since October
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 14.8% higher than the average sale price ($888K) of 6 comparable homes.
bridgeMLS, Bay East AOR, or Contra Costa AOR #40088504
Aug 16, 2021
Listing Removed
—
Public Records
May 20, 2015
Sold
$659,000
$290/sq ft
Public Records
Apr 4, 2012
Sold
$401,000
$177/sq ft
bridgeMLS, Bay East AOR, or Contra Costa AOR #40504980
Jan 24, 2011
Listing Removed
—
Public Records
Sep 21, 2005
Sold
$730,000
$321/sq ft
bridgeMLS, Bay East AOR, or Contra Costa AOR #40093686
Aug 26, 2005
Listing Removed
—
Year
Property tax
Land + Additions
Assessment*
2026
$12,428 (−2.3%)
$337,112 + $470,737
$807,849
2025
$12,716 (+11.4%)
$337,112 + $470,737
$807,849
2024
$11,417 (+0.5%)
$330,502 + $461,507
$792,009
2023
$11,362 (−8.1%)
$324,022 + $452,458
$776,480
2022
$12,362 (+3.4%)
$317,669 + $443,587
$761,256
2021
$11,960 (+27.6%)
$311,441 + $434,890
$746,331
2020
$9,372 (+1.8%)
$305,335 + $426,363
$731,698
2019
$9,210 (+4.2%)
$302,205 + $421,992
$724,197
2018
$8,839 (+1.3%)
$296,280 + $413,718
$709,998
2017
$8,725 (+7.4%)
$284,776 + $397,653
$682,429
2016
$8,126 (+48.9%)
$284,776 + $397,653
$682,429
2015
$5,459 (+1.4%)
$279,193 + $389,856
$669,049
2014
$5,386 (+0.7%)
$184,433 + $226,443
$410,876
2013
$5,346 (+4.4%)
$184,433 + $226,443
$410,876
2012
$5,120 (−5.7%)
$183,600 + $225,420
$409,020
2011
$5,431 (−3.8%)
$183,600 + $211,140
$394,740
2010
$5,648 (+4.8%)
$161,000 + $268,000
$429,000
2009
$5,390 (−24.5%)
$168,506 + $280,494
$449,000
2008
$7,136
$159,498 + $265,502
$425,000
Tax history for 228 Explorer Way
Year
Property tax
Land + Additions
Assessment*
2026
$12,428 (−2.3%)
$337,112 + $470,737
$807,849
2025
$12,716 (+11.4%)
$337,112 + $470,737
$807,849
2024
$11,417 (+0.5%)
$330,502 + $461,507
$792,009
2023
$11,362 (−8.1%)
$324,022 + $452,458
$776,480
2022
$12,362 (+3.4%)
$317,669 + $443,587
$761,256
2021
$11,960 (+27.6%)
$311,441 + $434,890
$746,331
2020
$9,372 (+1.8%)
$305,335 + $426,363
$731,698
2019
$9,210 (+4.2%)
$302,205 + $421,992
$724,197
2018
$8,839 (+1.3%)
$296,280 + $413,718
$709,998
2017
$8,725 (+7.4%)
$284,776 + $397,653
$682,429
2016
$8,126 (+48.9%)
$284,776 + $397,653
$682,429
2015
$5,459 (+1.4%)
$279,193 + $389,856
$669,049
2014
$5,386 (+0.7%)
$184,433 + $226,443
$410,876
2013
$5,346 (+4.4%)
$184,433 + $226,443
$410,876
2012
$5,120 (−5.7%)
$183,600 + $225,420
$409,020
2011
$5,431 (−3.8%)
$183,600 + $211,140
$394,740
2010
$5,648 (+4.8%)
$161,000 + $268,000
$429,000
2009
$5,390 (−24.5%)
$168,506 + $280,494
$449,000
2008
$7,136
$159,498 + $265,502
$425,000
*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.
Permits
Feb 25, 2022 • Final
Building - residential mechanical
Replace the air conditioning compressor unit on a residential building.
HVAC
Nov 17, 2021 • Final
Building - residential mechanical
Replace the heating and air conditioning system like-for-like in a single-family home. A HERS report is required at the final inspection.
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: 9
Exterior
Pool Information
Has Pool
Property Information
Subdivision Name: SUBDIVISION 8738
Living Sq. Ft: 2,271
Ground Floor Sq. Ft: 1,061
Building Sq. Ft: 2,271
# of Stories: 2
Legal Description: T8738 L3
Parking & Garage Information
Garage/Parking Sq. Ft: 486
Lot Information
# of Buildings: 1
Land Sq. Ft: 9,937
Legal Lot Number: 3
Acres: 0.2281
Zoning Code: R-7
County Use Description: SINGLE FAMILY
Financial
Assessor Information
Assessment Year: 2026
Public facts
Beds: 4
Baths: 3.0
Sq. Ft.: 2,271
Stories: 2.0
Lot Size: 9,937 square feet
Style: Single Family Residential
Year Built: 2004
Year Renovated: 2005
County: Contra Costa County
APN: 1591700388
Home facts updated by county records on Oct 30, 2026
Around this home
Schools
K - 12
Preschool & daycare
Las Juntas Elementary School
Public K-5 • Assigned • 0.9mi
5/10
Martinez Junior High School
Public 6-8 • Assigned • 3.0mi
7/10
Alhambra Senior High School
Public 9-12 • Assigned • 3.1mi
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
3/10 Fire Factor
0.46% chance of being in a wildfire in next 30 years
4/10 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
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
83
57
87
59
83
61
74
54
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
$970,000 – $1.17M
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