3990 Stone Rd is a 2,302 square foot house on a 0.4 acre lot with 2 bedrooms and 2 bathrooms. - it last sold on July 01, 2005 for $905,000. Based on Redfin's Bethel Island data, we estimate the home's value is $943,438.
Single-familyProperty Type
1992Year Built
0.4 acresLot Size
$410Est. Price/Sq.Ft.
3 car garageParking
Source:Public Records
Redfin Estimate
$943,438
$38K since sold in July 2005$8,000 since October
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 14% higher than the average sale price ($827K) of 6 comparable homes.
bridgeMLS, Bay East AOR, or Contra Costa AOR #40070771
Jun 2, 2005
Listing Removed
—
bridgeMLS, Bay East AOR, or Contra Costa AOR #40026949
Oct 8, 2004
Listing Removed
—
bridgeMLS, Bay East AOR, or Contra Costa AOR #29013408
May 30, 1999
Listing Removed
—
Year
Property tax
Land + Additions
Assessment*
2026
$10,013 (−3.2%)
$404,796 + $409,204
$814,000
2025
$10,345
$404,796 + $409,204
$814,000
2024
$10,345 (−8.7%)
$422,700 + $427,300
$850,000
2023
$11,337 (+4.8%)
$422,699 + $427,301
$850,000
2022
$10,814 (+25.8%)
$465,000 + $471,000
$936,000
2021
$8,594 (+7.4%)
$437,618 + $442,382
$880,000
2020
$8,002 (+4.5%)
$336,668 + $340,332
$677,000
2019
$7,655 (+4.5%)
$310,809 + $314,191
$625,000
2018
$7,326 (+22.7%)
$299,371 + $302,629
$602,000
2017
$5,969 (−0.3%)
$226,517 + $228,983
$455,500
2016
$5,988 (−8.5%)
$226,517 + $228,983
$455,500
2015
$6,543 (+40.9%)
$237,955 + $240,545
$478,500
2014
$4,645 (+4.5%)
$176,539 + $178,461
$355,000
2013
$4,446
$176,539 + $178,461
$355,000
2012
$4,445 (−8.9%)
$167,090 + $168,910
$336,000
2011
$4,877 (−9.9%)
$167,090 + $168,910
$336,000
2010
$5,410 (−12.9%)
$186,485 + $188,515
$375,000
2009
$6,212 (−12.9%)
$211,350 + $213,650
$425,000
2008
$7,133
$248,647 + $251,353
$500,000
Tax history for 3990 Stone Rd
Year
Property tax
Land + Additions
Assessment*
2026
$10,013 (−3.2%)
$404,796 + $409,204
$814,000
2025
$10,345
$404,796 + $409,204
$814,000
2024
$10,345 (−8.7%)
$422,700 + $427,300
$850,000
2023
$11,337 (+4.8%)
$422,699 + $427,301
$850,000
2022
$10,814 (+25.8%)
$465,000 + $471,000
$936,000
2021
$8,594 (+7.4%)
$437,618 + $442,382
$880,000
2020
$8,002 (+4.5%)
$336,668 + $340,332
$677,000
2019
$7,655 (+4.5%)
$310,809 + $314,191
$625,000
2018
$7,326 (+22.7%)
$299,371 + $302,629
$602,000
2017
$5,969 (−0.3%)
$226,517 + $228,983
$455,500
2016
$5,988 (−8.5%)
$226,517 + $228,983
$455,500
2015
$6,543 (+40.9%)
$237,955 + $240,545
$478,500
2014
$4,645 (+4.5%)
$176,539 + $178,461
$355,000
2013
$4,446
$176,539 + $178,461
$355,000
2012
$4,445 (−8.9%)
$167,090 + $168,910
$336,000
2011
$4,877 (−9.9%)
$167,090 + $168,910
$336,000
2010
$5,410 (−12.9%)
$186,485 + $188,515
$375,000
2009
$6,212 (−12.9%)
$211,350 + $213,650
$425,000
2008
$7,133
$248,647 + $251,353
$500,000
*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.
Permits
Jan 30, 2010 • Final
Building/residential/r/new single family-duplex
Construct a new single-family home with a garage.
New construction
Jan 30, 2010 • Final
Building - residential electrical
Install temporary power to an existing dock.
Electrical
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: 7
Exterior
Property Information
Subdivision Name: SANDMOUND PARK
Living Sq. Ft: 2,302
Ground Floor Sq. Ft: 1,676
Building Sq. Ft: 2,302
# of Stories: 2
Legal Description: SANDMOUND PARK LOT 70 & TR ADJ
Parking & Garage Information
Garage/Parking Sq. Ft: 980
Lot Information
# of Buildings: 1
Land Sq. Ft: 17,550
Legal Lot Number: 70
Acres: 0.4029
Zoning Code: F-1
County Use Description: SINGLE FAMILY
Location Information
Parcel Location Influence: Waterfront
Financial
Assessor Information
Assessment Year: 2026
Public facts
Beds: 2
Baths: 2.0
Sq. Ft.: 2,302
Stories: 2.0
Lot Size: 0.4 acres
Style: Single Family Residential
Year Built: 1992
Year Renovated: 1992
County: Contra Costa County
APN: 0311400782
Home facts updated by county records on Oct 30, 2026
Around this home
Schools
K - 12
Preschool & daycare
Summer Lake Elementary
Public K-5 • Assigned • 1.9mi
5/10
Delta Vista Middle School
Public 6-8 • Assigned • 3.9mi
2/10
Freedom High School
Public 9-12 • Assigned • 5.8mi
5/10
Provided by GreatSchools
Lifestyle
Provided by Walk Score and Local Logic
Climate risks
10/10 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
6/10 Heat Factor
6 days above 101° expected this year, 12 days in 30 years
1/10 Wind Factor
Minimal risk of severe winds over next 30 years
10/10 Air Factor
21 unhealthy days expected this year, 23 days in 30 years
Provided by First Street
Historical weather
Bethel Island, CA • 94511
Average low and high temperatures (°F)
58
40
63
45
71
50
72
51
80
56
85
58
86
60
90
62
85
62
74
54
63
47
55
44
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Sun exposure
In this area, properties receive around 12.8 hours in
June and 4.6 hours in December, placing it above the
U.S. average for solar exposure.
12.8 hrs
4.6 hrs
JuneDecember
Provided by Shadowmap
Estimated sale price
$897,000 – $1.09M
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