9639 Alcosta Blvd is a 3,200 square foot house on a 9,775 square foot lot with 5 bedrooms and 3 bathrooms. - it last sold on June 16, 2009 for $640,000. Based on Redfin's San Ramon data, we estimate the home's value is $1,933,824.
Single-familyProperty Type
1977Year Built
9,775 sq ftLot Size
$604Est. Price/Sq.Ft.
3 car garageParking
Source:Public Records
Redfin Estimate
$1,933,824
$1.3M since sold in June 2009$12K since October
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 23% higher than the average sale price ($1.57M) of 6 comparable homes.
bridgeMLS, Bay East AOR, or Contra Costa AOR #40404056
Apr 27, 2009
Listing Removed
—
bridgeMLS, Bay East AOR, or Contra Costa AOR #40323656
Mar 11, 2008
Listing Removed
—
Public Records
Aug 11, 2005
Sold
$765,000
$239/sq ft
Public Records
Jul 1, 1978
Sold
$103,000
$32/sq ft
Year
Property tax
Land + Additions
Assessment*
2026
$13,062 (+3.3%)
$485,993 + $632,818
$1,118,811
2025
$12,648 (+2.0%)
$485,993 + $632,818
$1,118,811
2024
$12,397 (+3.0%)
$476,464 + $620,410
$1,096,874
2023
$12,038 (+20.3%)
$467,122 + $608,246
$1,075,368
2022
$10,005 (+2.0%)
$457,963 + $581,320
$1,039,283
2021
$9,806 (+0.7%)
$448,984 + $393,451
$842,435
2020
$9,741 (+1.4%)
$440,181 + $385,737
$825,918
2019
$9,611 (+3.9%)
$435,668 + $381,782
$817,450
2018
$9,254 (+3.7%)
$427,126 + $374,297
$801,423
2017
$8,921 (+1.2%)
$410,541 + $359,763
$770,304
2016
$8,814 (+8.9%)
$410,541 + $359,763
$770,304
2015
$8,092 (+1.2%)
$402,492 + $352,709
$755,201
2014
$7,998 (+8.4%)
$388,682 + $283,632
$672,314
2013
$7,378 (+4.0%)
$388,682 + $283,632
$672,314
2012
$7,092 (−2.4%)
$386,926 + $282,351
$669,277
2011
$7,263 (−2.8%)
$346,876 + $253,124
$600,000
2010
$7,469 (−6.3%)
$371,902 + $271,388
$643,290
2009
$7,968 (−9.8%)
$369,123 + $269,360
$638,483
2008
$8,832
$386,667 + $293,333
$680,000
Tax history for 9639 Alcosta Blvd
Year
Property tax
Land + Additions
Assessment*
2026
$13,062 (+3.3%)
$485,993 + $632,818
$1,118,811
2025
$12,648 (+2.0%)
$485,993 + $632,818
$1,118,811
2024
$12,397 (+3.0%)
$476,464 + $620,410
$1,096,874
2023
$12,038 (+20.3%)
$467,122 + $608,246
$1,075,368
2022
$10,005 (+2.0%)
$457,963 + $581,320
$1,039,283
2021
$9,806 (+0.7%)
$448,984 + $393,451
$842,435
2020
$9,741 (+1.4%)
$440,181 + $385,737
$825,918
2019
$9,611 (+3.9%)
$435,668 + $381,782
$817,450
2018
$9,254 (+3.7%)
$427,126 + $374,297
$801,423
2017
$8,921 (+1.2%)
$410,541 + $359,763
$770,304
2016
$8,814 (+8.9%)
$410,541 + $359,763
$770,304
2015
$8,092 (+1.2%)
$402,492 + $352,709
$755,201
2014
$7,998 (+8.4%)
$388,682 + $283,632
$672,314
2013
$7,378 (+4.0%)
$388,682 + $283,632
$672,314
2012
$7,092 (−2.4%)
$386,926 + $282,351
$669,277
2011
$7,263 (−2.8%)
$346,876 + $253,124
$600,000
2010
$7,469 (−6.3%)
$371,902 + $271,388
$643,290
2009
$7,968 (−9.8%)
$369,123 + $269,360
$638,483
2008
$8,832
$386,667 + $293,333
$680,000
*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
Oct 21, 2015 • Final
Alteration, remodel, repair - building residential
Remodel
Mar 10, 2010 • Final
Miscellaneous - plumbing
Plumbing
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: 15
Exterior
Property Information
Subdivision Name: SUBDIVISION 4440
Living Sq. Ft: 4,084
Ground Floor Sq. Ft: 3,110
Building Sq. Ft: 4,084
# of Stories: 1
Legal Description: TRACT 4440 LOT 14 EX MR
Parking & Garage Information
Garage/Parking Sq. Ft: 674
Lot Information
# of Buildings: 1
Land Sq. Ft: 9,775
Legal Lot Number: 14
Acres: 0.2244
County Use Description: SINGLE FAMILY
Financial
Assessor Information
Assessment Year: 2026
Public facts
Beds: 5
Baths: 3.0
Sq. Ft.: 3,200
Stories: 1.0
Parking Spaces: 3
Basement: No
Accessible: No
Lot Size: 9,775 square feet
Style: Single Family Residential
Year Built: 1977
Year Renovated: 2023
County: Contra Costa County
APN: 2106610047
HOA Dues: —
Garage: Yes
Features: —
Home facts updated by owner on Jan 16, 2025
Around this home
Schools
K - 12
Preschool & daycare
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
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...