9543 Alcosta Blvd is a 2,170 square foot house on a 9,900 square foot lot with 3 bedrooms and 2 bathrooms. - it last sold on January 15, 1999 for $375,000. Based on Redfin's San Ramon data, we estimate the home's value is $1,583,747.
Single-familyProperty Type
1978Year Built
9,900 sq ftLot Size
$730Est. Price/Sq.Ft.
2 car garageParking
Source:Public Records
Redfin Estimate
$1,583,747
$1.2M since sold in January 1999$15K since October
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 5% lower than the average sale price ($1.67M) of 6 comparable homes.
bridgeMLS, Bay East AOR, or Contra Costa AOR #10265756
Dec 5, 1998
Listing Removed
—
bridgeMLS, Bay East AOR, or Contra Costa AOR #28265756
Nov 25, 1998
Listing Removed
—
Public Records
Nov 17, 1989
Sold
$315,000
$145/sq ft
Public Records
May 16, 1988
Sold
$235,000
$108/sq ft
Year
Property tax
Land + Additions
Assessment*
2026
$7,374 (+3.3%)
$287,822 + $311,805
$599,627
2025
$7,137 (+2.0%)
$287,822 + $311,805
$599,627
2024
$6,995 (+1.7%)
$282,179 + $305,692
$587,871
2023
$6,878 (+0.7%)
$276,647 + $299,699
$576,346
2022
$6,827 (+2.0%)
$271,223 + $293,823
$565,046
2021
$6,694 (+0.7%)
$265,905 + $288,062
$553,967
2020
$6,644 (+1.4%)
$260,692 + $282,414
$543,106
2019
$6,551 (+3.8%)
$258,019 + $279,519
$537,538
2018
$6,308 (+3.8%)
$252,960 + $274,039
$526,999
2017
$6,080 (+1.3%)
$243,138 + $263,399
$506,537
2016
$5,999 (+1.0%)
$243,138 + $263,399
$506,537
2015
$5,942 (+1.2%)
$238,371 + $258,235
$496,606
2014
$5,871 (+1.0%)
$230,192 + $249,375
$479,567
2013
$5,812 (+2.8%)
$230,192 + $249,375
$479,567
2012
$5,656 (+1.8%)
$229,152 + $248,248
$477,400
2011
$5,558 (+1.5%)
$224,659 + $243,381
$468,040
2010
$5,476 (+0.3%)
$220,254 + $238,609
$458,863
2009
$5,461 (+3.8%)
$218,608 + $236,826
$455,434
2008
$5,260
$219,128 + $237,389
$456,517
Tax history for 9543 Alcosta Blvd
Year
Property tax
Land + Additions
Assessment*
2026
$7,374 (+3.3%)
$287,822 + $311,805
$599,627
2025
$7,137 (+2.0%)
$287,822 + $311,805
$599,627
2024
$6,995 (+1.7%)
$282,179 + $305,692
$587,871
2023
$6,878 (+0.7%)
$276,647 + $299,699
$576,346
2022
$6,827 (+2.0%)
$271,223 + $293,823
$565,046
2021
$6,694 (+0.7%)
$265,905 + $288,062
$553,967
2020
$6,644 (+1.4%)
$260,692 + $282,414
$543,106
2019
$6,551 (+3.8%)
$258,019 + $279,519
$537,538
2018
$6,308 (+3.8%)
$252,960 + $274,039
$526,999
2017
$6,080 (+1.3%)
$243,138 + $263,399
$506,537
2016
$5,999 (+1.0%)
$243,138 + $263,399
$506,537
2015
$5,942 (+1.2%)
$238,371 + $258,235
$496,606
2014
$5,871 (+1.0%)
$230,192 + $249,375
$479,567
2013
$5,812 (+2.8%)
$230,192 + $249,375
$479,567
2012
$5,656 (+1.8%)
$229,152 + $248,248
$477,400
2011
$5,558 (+1.5%)
$224,659 + $243,381
$468,040
2010
$5,476 (+0.3%)
$220,254 + $238,609
$458,863
2009
$5,461 (+3.8%)
$218,608 + $236,826
$455,434
2008
$5,260
$219,128 + $237,389
$456,517
*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.
Zoning
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
Property details
Interior
Heating & Cooling
Heating Type: Forced Air
Fireplace Information
# of Fireplaces: 1
Has Fireplace
Room Information
# of Rooms: 10
Exterior
Exterior Information
Physical Condition: Good
Building Style Type: Ranch
Construction Type: Frame
Building Construction Quality: Good
Exterior Wall: Stucco
Pool Information
Has Pool
View Information
View: Good
Property Information
Subdivision Name: SUBDIVISION 4440
Living Sq. Ft: 2,170
Ground Floor Sq. Ft: 2,170
Building Sq. Ft: 2,844
# of Stories: 1
Legal Description: T04440 L0006 B EX MR
Parking & Garage Information
# of Parking Spaces: 3
Parking Type: Attached Garage
Garage/Parking Sq. Ft: 674
Garage / Carport Type: Attached
Lot Information
# of Buildings: 1
Land Sq. Ft: 9,900
Legal Lot Number: 6
Acres: 0.2273
County Use Description: SINGLE FAMILY
Utility Information
Sewer Type: Public
Water Service Type: Public
Financial
Assessor Information
Assessment Year: 2026
Public facts
Beds: 3
Baths: 2.0
Sq. Ft.: 2,170
Stories: 1.0
Lot Size: 9,900 square feet
Style: Single Family Residential
Year Built: 1978
Year Renovated: 1979
County: Contra Costa County
APN: 2106710052
Home facts updated by county records on Oct 30, 2026
Around this home
Schools
K - 12
Preschool & daycare
Walt Disney Elementary School
Public K-5 • Assigned • 0.5mi
10/10
Pine Valley Middle School
Public 6-8 • Assigned • 0.8mi
10/10
California High School
Public 9-12 • Assigned • 1.2mi
10/10
Provided by GreatSchools
Lifestyle
Provided by Walk Score and Local Logic
Local insights from Redfin agents
San Ramon, Past 3 months,Median price $1.51M, down 4.5% YoY,Homes sold: 169 in July, up 1%,Days on market 20 days,Market Active but more balanced; slight seller advantage,Bottom line: Prices have softened, but homes are still selling relatively...