bridgeMLS, Bay East AOR, or Contra Costa AOR #10506830
Apr 10, 1998
Listing Removed
—
Feb 23, 1998
Sold
$279,900
$160/sq ft
Feb 11, 1998
Listed
$279,900
$160/sq ft
THIS BEAUTIFUL CONTEMPORARY SINGLE STORY IS JUST WHAT YOUR FIRST TIME BUYER IS LOOK- ING FOR. TASTEFUL UPGRADES, GOLF COURSE
bridgeMLS, Bay East AOR, or Contra Costa AOR #28506830
Apr 6, 1998
Sold
$279,900
$160/sq ft
Feb 23, 1998
Listing Removed
—
Feb 11, 1998
Listed
$279,900
$160/sq ft
Public Records
Jul 21, 1994
Sold
$248,000
$142/sq ft
Public Records
Jun 30, 1988
Sold
$183,000
$105/sq ft
Year
Property tax
Land + Additions
Assessment*
2025
$5,687 (+2.0%)
$271,570 + $184,272
$455,842
2024
$5,575 (+1.7%)
$266,246 + $180,659
$446,905
2023
$5,480 (+0.7%)
$261,026 + $177,117
$438,143
2022
$5,441 (+1.9%)
$255,908 + $173,645
$429,553
2021
$5,337 (+0.8%)
$250,891 + $170,241
$421,132
2020
$5,296 (+1.5%)
$245,972 + $166,903
$412,875
2019
$5,219 (+3.8%)
$243,450 + $165,192
$408,642
2018
$5,028 (+3.7%)
$238,677 + $161,953
$400,630
2017
$4,847 (+1.4%)
$229,410 + $155,665
$385,075
2016
$4,780 (+0.9%)
$229,410 + $155,665
$385,075
2015
$4,736 (+1.2%)
$224,912 + $152,613
$377,525
2014
$4,680 (+1.1%)
$217,195 + $147,377
$364,572
2013
$4,631 (+2.7%)
$217,195 + $147,377
$364,572
2012
$4,510 (+1.7%)
$216,214 + $146,711
$362,925
2011
$4,433 (+1.6%)
$211,975 + $143,835
$355,810
2010
$4,363 (+0.4%)
$207,819 + $141,015
$348,834
2009
$4,347 (+4.0%)
$206,266 + $139,962
$346,228
2008
$4,180
$206,757 + $140,295
$347,052
Tax history for 9821 Alcosta Blvd
Year
Property tax
Land + Additions
Assessment*
2025
$5,687 (+2.0%)
$271,570 + $184,272
$455,842
2024
$5,575 (+1.7%)
$266,246 + $180,659
$446,905
2023
$5,480 (+0.7%)
$261,026 + $177,117
$438,143
2022
$5,441 (+1.9%)
$255,908 + $173,645
$429,553
2021
$5,337 (+0.8%)
$250,891 + $170,241
$421,132
2020
$5,296 (+1.5%)
$245,972 + $166,903
$412,875
2019
$5,219 (+3.8%)
$243,450 + $165,192
$408,642
2018
$5,028 (+3.7%)
$238,677 + $161,953
$400,630
2017
$4,847 (+1.4%)
$229,410 + $155,665
$385,075
2016
$4,780 (+0.9%)
$229,410 + $155,665
$385,075
2015
$4,736 (+1.2%)
$224,912 + $152,613
$377,525
2014
$4,680 (+1.1%)
$217,195 + $147,377
$364,572
2013
$4,631 (+2.7%)
$217,195 + $147,377
$364,572
2012
$4,510 (+1.7%)
$216,214 + $146,711
$362,925
2011
$4,433 (+1.6%)
$211,975 + $143,835
$355,810
2010
$4,363 (+0.4%)
$207,819 + $141,015
$348,834
2009
$4,347 (+4.0%)
$206,266 + $139,962
$346,228
2008
$4,180
$206,757 + $140,295
$347,052
*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
3
Baths
2
Stories
1
Lot width
—
Lot depth
—
Lot size
0.25 Acres
Year renovated
1984
Sq. Ft.
1,750
Year built
1983
Style
Single Family Residential
County
Contra Costa County
APN
2106810100
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
Jan 30, 2010 • Final
Building/residential/rp/repair
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
Has Attached Garage
Garage Spaces: 1
Covered Spaces: 1
Parking Features: Attached
Interior
Bathroom Information
# of Bathrooms Total: 2
# of Bathrooms Full: 2
Interior Features
Interior Features: Family Room, Formal Dining Room
Appliances: Range
Street Level Features: 3 Bedrooms, 2 Baths, Main Entry
Flooring: Vinyl, Carpet
Room Information
Kitchen Features: Range/Oven Built-in
Rooms Total: 8
Exterior
Building Information
Construction Materials: Stucco
Building Area Total: 1,750
Exterior Features
Roof: Shake
Property Information
Living Area: 1750
Living Area Units: Square Feet
Property Type: Residential
Property Sub Type: Single Family Residence
Year Built: 1984
Lot Information
Lot Size Square Feet: 11050
Lot Size Area: 0.25
Lot Size Units: Acres
Lot Size Acres: 0.25
Zoning: R-10
Utilities
Utility Information
Water Source: Public
Heating & Cooling
Has Heating
Heating: Forced Air
Location
School Information
High School District: San Ramon Valley (925) 552-5500
Public facts
Beds: 3
Baths: 2.0
Sq. Ft.: 1,750
Stories: 1.0
Lot Size: 0.25 acres
Style: Single Family Residential
Year Built: 1983
Year Renovated: 1984
County: Contra Costa County
APN: 2106810100
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 • 0.8mi
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...
San Ramon is best known for its seamless mix of outdoor recreation and modern conveniences. City Center Bishop Ranch is a major hub for dining, boutique shopping, and weekend events, while the Iron Horse Trail runs right through town, making it super...
San Ramon properties move fast, going pending in just 14 days. With fierce competition at the $1.6M median price, multiple offers and waived contingencies are the norm. Buyers must act decisively and submit their strongest offer immediately to win.
Property information provided by bridgeMLS, Bay East AOR, or Contra Costa AOR when last listed in 1998. This data may not match public records. Learn more.