bridgeMLS, Bay East AOR, or Contra Costa AOR #11005793
Mar 18, 1999
Sold
$471,500
$146/sq ft
Feb 18, 1999
Listing Removed
—
Feb 17, 1999
Listed
$479,950
$148/sq ft
Public Records
May 16, 1997
Sold
$385,000
$119/sq ft
bridgeMLS, Bay East AOR, or Contra Costa AOR #10222518
May 16, 1997
Listing Removed
—
Apr 14, 1997
Sold
$385,000
$119/sq ft
Aug 6, 1996
Listed
$385,000
$119/sq ft
SPECIAL LARGE HOME WITH NEW NEUTRAL CARPET- ING THROUGHOUT & FRESHLY PAINTED INSIDE & OUT! PLEASANT LARGE BACK YARD WITH GAZEBO &
bridgeMLS, Bay East AOR, or Contra Costa AOR #26222518
May 16, 1997
Sold
$385,000
$119/sq ft
Apr 14, 1997
Listing Removed
—
Aug 6, 1996
Listed
$385,000
$119/sq ft
Public Records
Jul 17, 1987
Sold
$295,000
$91/sq ft
Public Records
Dec 27, 1985
Sold
$124,000
$38/sq ft
Public Records
Jun 26, 1984
Sold
$55,000
$17/sq ft
Year
Property tax
Land + Additions
Assessment*
2025
$9,147 (+1.3%)
$230,254 + $557,328
$787,582
2024
$9,027 (+1.6%)
$225,740 + $546,400
$772,140
2023
$8,881 (+0.7%)
$221,314 + $535,687
$757,001
2022
$8,817 (+2.0%)
$216,975 + $525,184
$742,159
2021
$8,644 (+0.7%)
$212,721 + $514,887
$727,608
2020
$8,586 (+1.4%)
$208,550 + $504,792
$713,342
2019
$8,471 (+3.8%)
$206,412 + $499,616
$706,028
2018
$8,158 (+3.7%)
$202,365 + $489,820
$692,185
2017
$7,865 (+1.2%)
$194,508 + $470,800
$665,308
2016
$7,770 (+1.0%)
$194,508 + $470,800
$665,308
2015
$7,695 (+1.2%)
$190,695 + $461,569
$652,264
2014
$7,607 (+1.0%)
$184,152 + $445,731
$629,883
2013
$7,532 (+2.8%)
$184,152 + $445,731
$629,883
2012
$7,329 (+1.7%)
$183,320 + $443,717
$627,037
2011
$7,205 (+1.4%)
$179,726 + $435,017
$614,743
2010
$7,106 (+0.2%)
$176,202 + $426,488
$602,690
2009
$7,094 (+3.6%)
$174,886 + $423,301
$598,187
2008
$6,847
$175,302 + $424,307
$599,609
Tax history for 9628 Alcosta
Year
Property tax
Land + Additions
Assessment*
2025
$9,147 (+1.3%)
$230,254 + $557,328
$787,582
2024
$9,027 (+1.6%)
$225,740 + $546,400
$772,140
2023
$8,881 (+0.7%)
$221,314 + $535,687
$757,001
2022
$8,817 (+2.0%)
$216,975 + $525,184
$742,159
2021
$8,644 (+0.7%)
$212,721 + $514,887
$727,608
2020
$8,586 (+1.4%)
$208,550 + $504,792
$713,342
2019
$8,471 (+3.8%)
$206,412 + $499,616
$706,028
2018
$8,158 (+3.7%)
$202,365 + $489,820
$692,185
2017
$7,865 (+1.2%)
$194,508 + $470,800
$665,308
2016
$7,770 (+1.0%)
$194,508 + $470,800
$665,308
2015
$7,695 (+1.2%)
$190,695 + $461,569
$652,264
2014
$7,607 (+1.0%)
$184,152 + $445,731
$629,883
2013
$7,532 (+2.8%)
$184,152 + $445,731
$629,883
2012
$7,329 (+1.7%)
$183,320 + $443,717
$627,037
2011
$7,205 (+1.4%)
$179,726 + $435,017
$614,743
2010
$7,106 (+0.2%)
$176,202 + $426,488
$602,690
2009
$7,094 (+3.6%)
$174,886 + $423,301
$598,187
2008
$6,847
$175,302 + $424,307
$599,609
*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
Permits
Beds
5
Baths
3
Stories
1
Lot width
—
Lot depth
—
Lot size
0.36 Acres
Year renovated
1987
Sq. Ft.
3,236
Year built
1986
Style
Single Family Residential
County
Contra Costa County
APN
2107510204
Parking Spaces
—
Basement
—
Accessible
—
HOA Dues
—
Garage
—
Features
—
Last updated by owner on Jul 13, 2026.
RS-10
Single-Family Residential Zone
The RS zone is applied to areas of the City appropriate for single-family residential land uses in neighborhoods at a density of three to six units per net acre, subject to appropriate standards. The specific allowable density for each parcel is shown on the Zoning Map by a numerical suffix residential density designator (see Section D2-8). Minimum lot size for new parcels ranges from 3,500 to 12,000 sq ft. Depending upon the applicable residential density designator, the RS zone is consistent with and implements the Single Family Low Density, Single Family Low-Medium Density, and Single Family Medium Density land use classifications of the General Plan.
Permitted uses
Include but are not limited to:
Day care facility
Housing-Single unit
Housing-Senior
Housing-Student
Housing-Other
May 3, 2019 • Final
Water heater/softener - plumbing
Plumbing
Water heater
May 22, 2015 • Final
Alteration, remodel, repair - building residential
Remodel
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
Parking
Parking Information
Garage Spaces: 3
Covered Spaces: 3
Parking Features: Drive Through, Side Yard Access
Interior
Bathroom Information
# of Bathrooms Total: 4
# of Bathrooms Full: 3
# of Bathrooms Partial: 1
Other Bathrooms Included Features: Shower Over Tub
Interior Features
Interior Features: Au Pair, Formal Dining Room, In-Law Floorplan, Kitchen/Family Combo, Music Room, Central Vacuum
Appliances: Gas Range, Microwave, Refrigerator, Self Cleaning Oven
Laundry Features: Laundry Room
Upper Level Features: 2 Bedrooms, 2 Baths
Street Level Features: 3 Bedrooms, 2.5 Baths
Fireplaces Total: 1
Has Fireplace
Flooring: Hardwood, Linoleum, Carpet
Room Information
Kitchen Features: Gas Range/Cooktop,Microwave,Refrigerator,Self-Cleaning Oven
Rooms Total: 12
Fireplace Features: Family Room, Gas Starter, Wood Burning
Exterior
Building Information
Construction Materials: Stucco
Building Area Total: 3,236
Builder Name: CUSTOM HOME
Exterior Features
Patio And Porch Features: Deck
Exterior Features: Terraced Down
Mobile Home Information
Model: CUSTOM
Pool Information
Pool Features: Possible Pool Site
Property Information
Living Area: 3236
Living Area Units: Square Feet
Property Type: Residential
Property Sub Type: Single Family Residence
Year Built: 1987
Lot Information
Lot Size Square Feet: 15770
Lot Size Area: 0.36
Lot Size Units: Acres
Lot Size Acres: 0.36
Lot Features: Irregular Lot
Utilities
Utility Information
Water Source: Public
Heating & Cooling
Has Heating
Heating: Forced Air
Cooling: Central Air
Location
School Information
High School District: San Ramon Valley (925) 552-5500
Public facts
Beds: 5
Baths: 3.0
Sq. Ft.: 3,236
Stories: 1.0
Lot Size: 0.36 acres
Style: Single Family Residential
Year Built: 1986
Year Renovated: 1987
County: Contra Costa County
APN: 2107510204
Home facts updated by county records on Jul 13, 2026
Around this home
Schools
Walt Disney Elementary School
Public K-5 • Assigned • 0.4mi
10/10
Pine Valley Middle School
Public 6-8 • Assigned • 0.8mi
10/10
California High School
Public 9-12 • Assigned • 1.1mi
10/10
Provided by GreatSchools
Lifestyle
Provided by Walk Score and Local Logic
Local insights from Redfin agents
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Property information provided by bridgeMLS, Bay East AOR, or Contra Costa AOR when last listed in 1999. This data may not match public records. Learn more.