bridgeMLS, Bay East AOR, or Contra Costa AOR #22019645
Jun 20, 2017
Listing Removed
—
bridgeMLS, Bay East AOR, or Contra Costa AOR #40764395
Jan 30, 2017
Sold
$700,000
$328/sq ft
Dec 17, 2016
Pending
—
Nov 20, 2016
Listed
$818,000
$383/sq ft
bridgeMLS, Bay East AOR, or Contra Costa AOR #22022905
Oct 25, 2002
Sold
$575,000
$270/sq ft
Aug 8, 2002
Listing Removed
—
Jul 24, 2002
Listed
$659,900
$309/sq ft
SPRAWLING RANCH ON 3.88 ACRES OF PRIVACY! HOME OFFERS AN ADDITIONAL MODULAR FOR OFFICE/ IN LAW SET UP! ALSO HAS A MOTOR HOME COVER AND DETACHED ADDITIONAL GARAGE/WORKSHOP! LOTS OF AEINITIES! HURRY!
Year
Property tax
Land + Additions
Assessment*
2025
$10,446 (+1.8%)
$435,634 + $416,909
$852,543
2024
$10,263 (+1.2%)
$427,093 + $401,935
$829,028
2023
$10,139 (+0.9%)
$418,719 + $394,054
$812,773
2022
$10,054 (+16.5%)
$410,509 + $386,328
$796,837
2021
$8,631 (−49.9%)
$402,460 + $378,753
$781,213
2020
$17,227 (+104.1%)
$394,569 + $371,327
$765,896
2019
$8,439 (+3.1%)
$390,524 + $367,520
$758,044
2018
$8,184 (−8.0%)
$382,867 + $345,412
$728,279
2017
$8,898 (+9.8%)
$395,760 + $374,340
$770,100
2016
$8,106 (−2.2%)
$395,760 + $374,340
$770,100
2015
$8,291 (+13.0%)
$174,751 + $565,249
$740,000
2014
$7,336 (+5.9%)
$152,671 + $493,829
$646,500
2013
$6,925 (+9.9%)
$152,671 + $493,829
$646,500
2012
$6,303 (+33.3%)
$142,753 + $461,747
$604,500
2011
$4,727 (+0.4%)
$129,884 + $420,116
$550,000
2010
$4,708 (+0.2%)
$96,823 + $313,177
$410,000
2009
$4,697 (−40.5%)
$96,823 + $313,177
$410,000
2008
$7,890
$170,000 + $240,000
$410,000
Tax history for 670 Brownstone Rd
Year
Property tax
Land + Additions
Assessment*
2025
$10,446 (+1.8%)
$435,634 + $416,909
$852,543
2024
$10,263 (+1.2%)
$427,093 + $401,935
$829,028
2023
$10,139 (+0.9%)
$418,719 + $394,054
$812,773
2022
$10,054 (+16.5%)
$410,509 + $386,328
$796,837
2021
$8,631 (−49.9%)
$402,460 + $378,753
$781,213
2020
$17,227 (+104.1%)
$394,569 + $371,327
$765,896
2019
$8,439 (+3.1%)
$390,524 + $367,520
$758,044
2018
$8,184 (−8.0%)
$382,867 + $345,412
$728,279
2017
$8,898 (+9.8%)
$395,760 + $374,340
$770,100
2016
$8,106 (−2.2%)
$395,760 + $374,340
$770,100
2015
$8,291 (+13.0%)
$174,751 + $565,249
$740,000
2014
$7,336 (+5.9%)
$152,671 + $493,829
$646,500
2013
$6,925 (+9.9%)
$152,671 + $493,829
$646,500
2012
$6,303 (+33.3%)
$142,753 + $461,747
$604,500
2011
$4,727 (+0.4%)
$129,884 + $420,116
$550,000
2010
$4,708 (+0.2%)
$96,823 + $313,177
$410,000
2009
$4,697 (−40.5%)
$96,823 + $313,177
$410,000
2008
$7,890
$170,000 + $240,000
$410,000
*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.
Public record
Public record
Zoning
Beds
4
Baths
3
Stories
1
Lot width
—
Lot depth
—
Lot size
3.88 Acres
Year renovated
1978
Sq. Ft.
2,133
Year built
1977
Style
Single Family Residential
County
Contra Costa County
APN
0341500023
Parking Spaces
—
Basement
—
Accessible
—
HOA Dues
—
Garage
—
Features
—
Last updated by owner on Jul 13, 2026.
AL
Limited Agricultural District
The purpose of the AL District is to provide an area for agricultural uses and to permit rural development and agricultural uses that are compatible with nearby single family and multiple family residential zoning. Intense agricultural uses which create strong, obnoxious odors, or which might disturb adjacent or nearby residential areas with intense noise or vibration are not appropriate for the AL Agricultural District.
Permitted uses
Include but are not limited to:
Agriculture
Greenhouse / nursery
Livestock production
Religious facility
Housing-Single unit
Educational/school
Park & open space
Property details
Parking
Parking Information
Has Attached Garage
Garage Spaces: 2
Covered Spaces: 2
Parking Features: Attached, Detached, Garage, RV/Boat Parking, Workshop in Garage
Interior
Bathroom Information
# of Bathrooms Total: 3
# of Bathrooms Full: 3
Primary Bathroom Included Features: Shower Over Tub
Interior Features
Interior Features: Storage
Appliances: Gas Water Heater
Laundry Features: Hookups Only
Street Level Features: 4 Bedrooms, 2 Baths
Fireplaces Total: 1
Has Fireplace
Room Information
Kitchen Features: Other
Rooms Total: 10
Fireplace Features: Living Room
Exterior
Building Information
Construction Materials: Stucco
Building Area Total: 2,133
Foundation Details: Raised
Exterior Features
Exterior Features: Storage
Property Information
Living Area: 2133
Living Area Units: Square Feet
Property Type: Residential
Property Sub Type: Single Family Residence
Year Built: 1977
Lot Information
Other Structures: Shed(s)
Lot Size Square Feet: 169013
Lot Size Area: 3.88
Lot Size Units: Acres
Lot Size Acres: 3.88
Lot Features: Premium Lot, Secluded
Utilities
Utility Information
Sewer: Septic Tank
Utilities: Other Water/Sewer
Heating & Cooling
Has Heating
Heating: Forced Air
Public facts
Beds: 4
Baths: 3.0
Sq. Ft.: 2,133
Stories: 1.0
Lot Size: 3.88 acres
Style: Single Family Residential
Year Built: 1977
Year Renovated: 1978
County: Contra Costa County
APN: 0341500023
Home facts updated by county records on Jul 13, 2026
Around this home
Schools
Almond Grove Elementary
Public K-5 • Assigned • 1.0mi
5/10
O'Hara Park Middle School
Public 6-8 • Assigned • 1.2mi
3/10
Freedom High School
Public 9-12 • Assigned • 0.7mi
5/10
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
1% chance of being in a wildfire in next 30 years
6/10 Heat Factor
7 days above 101° expected this year, 14 days in 30 years
1/10 Wind Factor
Minimal risk of severe winds over next 30 years
9/10 Air Factor
17 unhealthy days expected this year, 18 days in 30 years
Provided by First Street
Historical weather
Oakley, CA • 94561
Average low and high temperatures (°F)
59
40
64
45
72
50
73
51
81
56
86
58
89
60
92
61
86
62
79
55
64
47
56
44
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Sun exposure
In this area, properties receive around 12.2 hours in
June and 4.7 hours in December, placing it above the
U.S. average for solar exposure.
12.2 hrs
4.7 hrs
JuneDecember
Provided by Shadowmap
Estimated sale price
$893,000 – $1.08M
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Property information provided by bridgeMLS, Bay East AOR, or Contra Costa AOR when last listed in 2016. This data may not match public records. Learn more.