9809 Alcosta Blvd is a 1,918 square foot house on a 10,800 square foot lot with 4 bedrooms and 2 bathrooms. - it last sold on July 05, 2000 for $262,000. Based on Redfin's San Ramon data, we estimate the home's value is $1,320,548.
Single-familyProperty Type
1983Year Built
10,800 sq ftLot Size
$689Est. Price/Sq.Ft.
Source:Public Records
Redfin Estimate
$1,320,548
$1.1M since sold in July 2000$19K since August
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 13.7% lower than the average sale price ($1.53M) of 6 comparable homes.
bridgeMLS, Bay East AOR, or Contra Costa AOR #10230574
Feb 21, 1997
Listing Removed
—
Jan 27, 1997
Sold
$246,900
$129/sq ft
Jan 26, 1997
Listed
$246,900
$129/sq ft
bridgeMLS, Bay East AOR, or Contra Costa AOR #27230574
Feb 20, 1997
Sold
$246,900
$129/sq ft
Jan 27, 1997
Listing Removed
—
Jan 26, 1997
Listed
$246,900
$129/sq ft
Public Records
Aug 29, 1986
Sold
$178,000
$93/sq ft
Year
Property tax
Land + Additions
Assessment*
2025
$5,055 (+2.0%)
$307,387 + $96,048
$403,435
2024
$4,954 (+1.8%)
$301,360 + $94,165
$395,525
2023
$4,866 (+0.7%)
$295,451 + $92,319
$387,770
2022
$4,830 (+2.0%)
$289,658 + $90,509
$380,167
2021
$4,738 (+0.8%)
$283,979 + $88,735
$372,714
2020
$4,699 (+1.5%)
$278,411 + $86,996
$365,407
2019
$4,628 (+3.8%)
$275,557 + $86,104
$361,661
2018
$4,457 (+3.8%)
$270,154 + $84,416
$354,570
2017
$4,295 (+1.5%)
$259,664 + $81,139
$340,803
2016
$4,231 (+0.9%)
$259,664 + $81,139
$340,803
2015
$4,192 (+1.3%)
$254,573 + $79,549
$334,122
2014
$4,140 (+1.1%)
$245,839 + $76,821
$322,660
2013
$4,096 (+2.7%)
$245,839 + $76,821
$322,660
2012
$3,989 (+1.8%)
$244,728 + $76,474
$321,202
2011
$3,919 (+1.7%)
$239,930 + $74,975
$314,905
2010
$3,853 (+0.4%)
$235,226 + $73,505
$308,731
2009
$3,836 (+4.2%)
$233,468 + $72,956
$306,424
2008
$3,683
$234,023 + $73,130
$307,153
Tax history for 9809 Alcosta Blvd
Year
Property tax
Land + Additions
Assessment*
2025
$5,055 (+2.0%)
$307,387 + $96,048
$403,435
2024
$4,954 (+1.8%)
$301,360 + $94,165
$395,525
2023
$4,866 (+0.7%)
$295,451 + $92,319
$387,770
2022
$4,830 (+2.0%)
$289,658 + $90,509
$380,167
2021
$4,738 (+0.8%)
$283,979 + $88,735
$372,714
2020
$4,699 (+1.5%)
$278,411 + $86,996
$365,407
2019
$4,628 (+3.8%)
$275,557 + $86,104
$361,661
2018
$4,457 (+3.8%)
$270,154 + $84,416
$354,570
2017
$4,295 (+1.5%)
$259,664 + $81,139
$340,803
2016
$4,231 (+0.9%)
$259,664 + $81,139
$340,803
2015
$4,192 (+1.3%)
$254,573 + $79,549
$334,122
2014
$4,140 (+1.1%)
$245,839 + $76,821
$322,660
2013
$4,096 (+2.7%)
$245,839 + $76,821
$322,660
2012
$3,989 (+1.8%)
$244,728 + $76,474
$321,202
2011
$3,919 (+1.7%)
$239,930 + $74,975
$314,905
2010
$3,853 (+0.4%)
$235,226 + $73,505
$308,731
2009
$3,836 (+4.2%)
$233,468 + $72,956
$306,424
2008
$3,683
$234,023 + $73,130
$307,153
*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.
Zoning and permits
Zoning
Permits
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
Jan 31, 2014 • Final
Miscellaneous - mechanical
HVAC
Nov 2, 2010 • Final
Furnace a/c - mechanical (residential)
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
Heating & Cooling
Air Conditioning Type: Central
Heating Fuel Type: Gas
Heating Type: Forced Air
Fireplace Information
# of Fireplaces: 1
Has Fireplace
Room Information
# of Rooms: 9
Exterior
Exterior Information
Physical Condition: Good
Foundation Type: Raised W/Crawlspace
Building Style Type: Ranch
Construction Type: Frame
Building Construction Quality: Good
Exterior Wall: Stucco
Property Information
Subdivision Name: SUBDIVISION 4441
Living Sq. Ft: 1,918
Ground Floor Sq. Ft: 1,918
Building Sq. Ft: 1,918
# of Stories: 1
Legal Description: T04441 L0009 B EX MR
Parking & Garage Information
# of Parking Spaces: 2
Garage/Parking Sq. Ft: 420
Lot Information
# of Buildings: 1
Land Sq. Ft: 10,800
Legal Lot Number: 9
Acres: 0.2479
County Use Description: SINGLE FAMILY
Utility Information
Sewer Type: Public
Water Service Type: Public
Financial
Assessor Information
Assessment Year: 2026
Public facts
Beds: 4
Baths: 2.0
Sq. Ft.: 1,918
Stories: 1.0
Lot Size: 10,800 square feet
Style: Single Family Residential
Year Built: 1983
Year Renovated: 1989
County: Contra Costa County
APN: 2106810092
Home facts updated by county records on Jul 13, 2026
Around this home
Schools
Walt Disney Elementary School
Public K-5 • Assigned • 0.3mi
10/10
Pine Valley Middle School
Public 6-8 • Assigned • 0.7mi
10/10
California High School
Public 9-12 • Assigned • 0.9mi
10/10
Provided by GreatSchools
Lifestyle
Provided by Walk Score and Local Logic
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