Google street view image for 9821 Alcosta Blvd, San Ramon, CA 94583

Off market jul 1994 for $248K

$1,275,283

Est. refi paymentEst. refi $1,561/mo

•

2 ba

•

1,750

sq ft

9821 Alcosta Blvd, San Ramon, CA 94583

About this home

9821 Alcosta Blvd is a 1,750 square foot house on a 0.25 acre lot with 3 bedrooms and 2 bathrooms. - it last sold on July 21, 1994 for $248,000. Based on Redfin's San Ramon data, we estimate the home's value is $1,275,283.

Single-familyProperty Type

1983Year Built

0.25 acresLot Size

$729Est. Price/Sq.Ft.

1 car garageParking

Source:Public Records

Redfin Estimate

$1,275,283

$1.0M since sold in July 1994$19K since October

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 9.9% lower than the average sale price ($1.42M) of 6 comparable homes.

SOLD OCT 19, 2026
$1,275,000
A
3 beds2 baths1,735 sq ft
147 Summerset Ct, San Ramon, CA 94583
SOLD SEP 8, 2026
$1,200,000
B
3 beds2 baths1,433 sq ft
3247 Ensenada Dr, San Ramon, CA 94583
SOLD JUN 5, 2026
$1,775,000
C
4 beds2 baths2,170 sq ft
9529 Thunderbird Dr, San Ramon, CA 94583
SOLD MAY 22, 2026
$1,575,150
D
3 beds2 baths1,875 sq ft
9980 Mangos Dr, San Ramon, CA 94583
SOLD DEC 16, 2025
$1,345,000
E
3 beds2 baths1,899 sq ft
9832 Del Mar Dr, San Ramon, CA 94583
Realty Of America
SOLD AUG 24, 2026
$1,322,000
F
3 beds2 baths1,558 sq ft
8 Bath Ct, San Ramon, CA 94583

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Earn from this home

Sell

$1,207,331

Est. take-home

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Est. cash available

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Rent

$4,043/mo

Redfin rental estimate

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Market trends in 94583, CA

Last updated October 2026

Buyer's Market

Seller's Market

Seller's market

Sale-to-list price

100.0%

+0.7% MoM

Median sale price

$1.4M

$50K MoM

Avg. days on market

29d

7 days MoM

Recently sold homes

0 MoM

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4 beds2 baths1,812 sq ft
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COMING SOON
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EARLY ACCESS
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See all

Provided by Redfin

Sale history for 9821 Alcosta Blvd

Year

Property tax

Land + Additions

Assessment*

2026

$5,875 (+3.3%)

$271,570 + $184,272

$455,842

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*

2026

$5,875 (+3.3%)

$271,570 + $184,272

$455,842

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.

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

Property details

Interior

Room Information
# of Rooms: 8

Exterior

Property Information
Subdivision Name: SUBDIVISION 4441
Living Sq. Ft: 1,750
Ground Floor Sq. Ft: 1,750
Building Sq. Ft: 1,750
# of Stories: 1
Legal Description: T04441 L0010 B EX MR

Parking & Garage Information
Garage/Parking Sq. Ft: 420

Lot Information
# of Buildings: 1
Land Sq. Ft: 11,050
Legal Lot Number: 10
Acres: 0.2537
County Use Description: SINGLE FAMILY

Financial

Assessor Information
Assessment Year: 2026

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 Oct 30, 2026

Around this home

Schools

K - 12
Preschool & daycare

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...
2 months ago • San Ramon
Gagan Singh
Redfin Premier agent
656 deals
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Climate risks

1/10 Flood Factor

Minimal risk of a flood reaching the building in the next 30 years

4/10 Fire Factor

2% chance of being in a wildfire in next 30 years

4/10 Heat Factor

7 days above 97° expected this year, 15 days in 30 years

1/10 Wind Factor

Minimal risk of severe winds over next 30 years

9/10 Air Factor

19 unhealthy days expected this year, 21 days in 30 years

Provided by First Street

Historical weather

San Ramon, CA • 94583

Average low and high temperatures (°F)

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Sun exposure

In this area, properties receive around 11.6 hours in June and 4.8 hours in December, placing it above the U.S. average for solar exposure.

11.6 hrs

4.8 hrs

JuneDecember

Provided by Shadowmap

Estimated sale price

$1.21M – $1.47M

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Home values near 9821 Alcosta Blvd

Data from public records.

Address	Redfin Estimate
9845 Alcosta Boulevard, San Ramon, CA 5 Beds \| 3 Baths \| 2906 Sq. Ft.	$1,795,716
9844 Alcosta Boulevard, San Ramon, CA 4 Beds \| 4 Baths \| 3468 Sq. Ft.	$1,516,912
9797 Alcosta Boulevard, San Ramon, CA 3 Beds \| 2 Baths \| 1750 Sq. Ft.	$1,402,272
9761 Alcosta Boulevard, San Ramon, CA 4 Beds \| 3 Baths \| 2873 Sq. Ft.	$1,586,732
507 Riviera Place, San Ramon, CA 3 Beds \| 2 Baths \| 1842 Sq. Ft.	$1,513,573
311 Pine Valley Court, San Ramon, CA 3 Beds \| 3 Baths \| 3128 Sq. Ft.	$1,915,928
3329 Pine Valley Road, San Ramon, CA 3 Beds \| 2 Baths \| 1899 Sq. Ft.	$1,433,273

Address	Redfin Estimate
9773 Alcosta Boulevard, San Ramon, CA 4 Beds \| 2.5 Baths \| 2854 Sq. Ft.	$1,802,723
9786 Alcosta Boulevard, San Ramon, CA 4 Beds \| 3 Baths \| 3400 Sq. Ft.	$1,959,574
9785 Alcosta Boulevard, San Ramon, CA 4 Beds \| 2 Baths \| 1918 Sq. Ft.	$1,344,264
301 Pine Valley Court, San Ramon, CA 4 Beds \| 3 Baths \| 3435 Sq. Ft.	$1,957,882
513 Riviera Place, San Ramon, CA 3 Beds \| 2 Baths \| 2112 Sq. Ft.	$1,693,168
519 Riviera Place, San Ramon, CA 3 Beds \| 2 Baths \| 2112 Sq. Ft.	$1,525,234
304 Pine Valley Court, San Ramon, CA 4 Beds \| 3 Baths \| 3420 Sq. Ft.	$2,042,446

Address	Redfin Estimate
9798 Alcosta Boulevard, San Ramon, CA 3 Beds \| 3 Baths \| 3128 Sq. Ft.	$1,874,836
9774 Alcosta Boulevard, San Ramon, CA 3 Beds \| 2.5 Baths \| 3520 Sq. Ft.	$1,983,149
9809 Alcosta Boulevard, San Ramon, CA 4 Beds \| 2 Baths \| 1918 Sq. Ft.	$1,290,511
312 Pine Valley Court, San Ramon, CA 4 Beds \| 3 Baths \| 3400 Sq. Ft.	$2,154,782
3291 Pine Valley Road, San Ramon, CA 4 Beds \| 3 Baths \| 2491 Sq. Ft.	$1,827,543
316 Pine Valley Court, San Ramon, CA 4 Beds \| 3 Baths \| 3830 Sq. Ft.	$2,136,428
308 Pine Valley Court, San Ramon, CA 4 Beds \| 3 Baths \| 3420 Sq. Ft.	$2,133,531

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About this home

Redfin Estimate

Earn from this home

Market trends in 94583, CA

Sale history for 9821 Alcosta Blvd

Tax history for 9821 Alcosta Blvd

Zoning and permits

Property details

Around this home

Schools

Lifestyle

Local insights from Redfin agents

Climate risks

Historical weather

Sun exposure

Nearby similar homes

New listings for sale in 94583

Home values near 9821 Alcosta Blvd

More real estate resources