Google street view image for 12257 Alcosta Blvd, San Ramon, CA 94583

Off market apr 1995 for $310K

$1,690,951

Est. refi paymentEst. refi $1,852/mo

•

2,750

sq ft

12257 Alcosta Blvd, San Ramon, CA 94583

About this home

12257 Alcosta Blvd is a 2,750 square foot house on a 10,000 square foot lot with 4 bedrooms and 3 bathrooms. - it last sold on April 13, 1995 for $310,000. Based on Redfin's San Ramon data, we estimate the home's value is $1,690,951.

Single-familyProperty Type

1978Year Built

10,000 sq ftLot Size

$615Est. Price/Sq.Ft.

3 spacesParking

Source:Public Records

Redfin Estimate

$1,690,951

$1.4M since sold in April 1995$14K since September

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 14.2% lower than the average sale price ($1.97M) of 6 comparable homes.

SOLD SEP 29, 2026
$1,731,000
A
4 beds3 baths2,448 sq ft
403 San Roberto Pl, San Ramon, CA 94583
SOLD JUN 1, 2026
$1,730,000
B
4 beds3 baths2,448 sq ft
12228 Toluca Dr, San Ramon, CA 94583
SOLD SEP 1, 2026
$2,315,000
C
4 beds3 baths3,000 sq ft
34 Shetland Ct, San Ramon, CA 94583
SOLD JUN 15, 2026
$2,310,000
D
4 beds3 baths2,682 sq ft
515 Burns Cir, San Ramon, CA 94583
SOLD APR 3, 2026
$2,225,000
E
4 beds3 baths3,094 sq ft
12232 Toluca Dr, San Ramon, CA 94583
SOLD SEP 28, 2026
$1,520,000
F
4 beds3 baths2,539 sq ft
2704 Mohawk Cir, San Ramon, CA 94583

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Earn from this home

Sell

$1,601,176

Est. take-home

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Est. cash available

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Rent

$5,803/mo

Redfin rental estimate

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Market trends in 94583, CA

Last updated September 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

New listings for sale

OPEN SAT, 1PM TO 4PM
$1,199,999
4 beds2 baths1,447 sq ft
37 San Piedras Pl, San Ramon, CA 94583
OPEN SAT, 1PM TO 3PM
$1,449,800
5 beds3 baths2,119 sq ft
125 Wilton Pl, San Ramon, CA 94583
OPEN SUN, 1PM TO 4PM
$3,150,000
6 beds6.5 baths5,735 sq ft
3108 Ashbourne Cir, San Ramon, CA 94583
$1,198,000
4 beds2 baths1,232 sq ft
25 Marilyn Pl, San Ramon, CA 94583
OPEN SUN, 12PM TO 3PM
$499,000
2 beds1 bath924 sq ft
105 Compton Cir Unit A, San Ramon, CA 94583
$1,550,000
5 beds3 baths2,368 sq ft
2518 Kilpatrick Ct, San Ramon, CA 94583
COMING SOON
$1,599,000
4 beds3.5 baths2,121 sq ft
1002 Sinopia Ter, San Ramon, CA 94583
COMING SOON
$1,848,888
5 beds3 baths2,835 sq ft
52 Apache Ct, San Ramon, CA 94583
$615,000
2 beds1.5 baths954 sq ft
2749 Fountainhead Dr, San Ramon, CA 94583
OPEN SUN, 2PM TO 4PM
$1,165,000
3 beds3.5 baths1,837 sq ft
1200 Lorenzini Loop, San Ramon, CA 94583
See all

Provided by Redfin

Sale history for 12257 Alcosta Blvd

Year

Property tax

Land + Additions

Assessment*

2025

$6,634 (+2.2%)

$222,714 + $308,380

$531,094

2024

$6,491 (+1.8%)

$218,348 + $302,334

$520,682

2023

$6,376 (+0.8%)

$214,067 + $296,406

$510,473

2022

$6,327 (+2.3%)

$209,870 + $290,595

$500,465

2021

$6,184 (+1.5%)

$205,755 + $284,898

$490,653

2020

$6,094 (+1.1%)

$201,721 + $279,312

$481,033

2019

$6,030 (+3.9%)

$199,653 + $276,448

$476,101

2018

$5,805 (+3.9%)

$195,739 + $271,028

$466,767

2017

$5,589 (+1.6%)

$188,139 + $260,504

$448,643

2016

$5,502 (+1.5%)

$188,139 + $260,504

$448,643

2015

$5,419 (+1.6%)

$184,450 + $255,397

$439,847

2014

$5,333 (+1.5%)

$178,122 + $246,634

$424,756

2013

$5,255 (+3.3%)

$178,122 + $246,634

$424,756

2012

$5,089 (+2.2%)

$177,317 + $245,520

$422,837

2011

$4,981 (+1.5%)

$173,841 + $240,706

$414,547

2010

$4,906

$170,433 + $235,987

$406,420

2009

$4,910 (+3.8%)

$169,160 + $234,224

$403,384

2008

$4,728

$169,562 + $234,781

$404,343

Tax history for 12257 Alcosta Blvd

Year

Property tax

Land + Additions

Assessment*

2025

$6,634 (+2.2%)

$222,714 + $308,380

$531,094

2024

$6,491 (+1.8%)

$218,348 + $302,334

$520,682

2023

$6,376 (+0.8%)

$214,067 + $296,406

$510,473

2022

$6,327 (+2.3%)

$209,870 + $290,595

$500,465

2021

$6,184 (+1.5%)

$205,755 + $284,898

$490,653

2020

$6,094 (+1.1%)

$201,721 + $279,312

$481,033

2019

$6,030 (+3.9%)

$199,653 + $276,448

$476,101

2018

$5,805 (+3.9%)

$195,739 + $271,028

$466,767

2017

$5,589 (+1.6%)

$188,139 + $260,504

$448,643

2016

$5,502 (+1.5%)

$188,139 + $260,504

$448,643

2015

$5,419 (+1.6%)

$184,450 + $255,397

$439,847

2014

$5,333 (+1.5%)

$178,122 + $246,634

$424,756

2013

$5,255 (+3.3%)

$178,122 + $246,634

$424,756

2012

$5,089 (+2.2%)

$177,317 + $245,520

$422,837

2011

$4,981 (+1.5%)

$173,841 + $240,706

$414,547

2010

$4,906

$170,433 + $235,987

$406,420

2009

$4,910 (+3.8%)

$169,160 + $234,224

$403,384

2008

$4,728

$169,562 + $234,781

$404,343

*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: 11

Exterior

Exterior Information
Physical Condition: Good
Building Style Type: Contemporary
Construction Type: Frame
Building Construction Quality: Average
Exterior Wall: Stucco

Property Information
Subdivision Name: MAP/SUB 4477
Living Sq. Ft: 2,750
Ground Floor Sq. Ft: 1,582
Building Sq. Ft: 2,750
# of Stories: 2
Legal Description: T04477 L0037 B EX MR

Parking & Garage Information
Garage/Parking Sq. Ft: 654

Lot Information
# of Buildings: 1
Land Sq. Ft: 10,000
Legal Lot Number: 37
Acres: 0.2296
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: 3.0
Sq. Ft.: 2,750
Stories: 2.0
Parking Spaces: 3
Basement: No
Accessible: No
Lot Size: 10,000 square feet
Style: Single Family Residential
Year Built: 1978
Year Renovated: 1979
County: Contra Costa County
APN: 2123510063
HOA Dues: —
Garage: Yes
Features: —

Home facts updated by owner on May 5, 2024

Around this home

Schools

Montevideo Elementary School

Public K-5 • Assigned • 0.5mi

9/10

Iron Horse Middle School

Public 6-8 • Assigned • 1.4mi

10/10

California High School

Public 9-12 • Assigned • 0.7mi

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
658 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

8 days above 97° expected this year, 16 days in 30 years

1/10 Wind Factor

Minimal risk of severe winds over next 30 years

8/10 Air Factor

15 unhealthy days expected this year, 16 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

$1.61M – $1.95M

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Home values near 12257 Alcosta Blvd

Data from public records.

Address	Redfin Estimate
12249 Alcosta Boulevard, San Ramon, CA 4 Beds \| 3 Baths \| 2750 Sq. Ft.	$1,710,518
12245 Alcosta Boulevard, San Ramon, CA 3 Beds \| 2 Baths \| 2112 Sq. Ft.	$1,452,775

Address	Redfin Estimate
12265 Alcosta Boulevard, San Ramon, CA 3 Beds \| 2 Baths \| 2112 Sq. Ft.	$1,818,627
12261 Alcosta Boulevard, San Ramon, CA 4 Beds \| 3 Baths \| 2448 Sq. Ft.	$1,568,571

Address	Redfin Estimate
12237 Alcosta Boulevard, San Ramon, CA 4 Beds \| 3 Baths \| 2448 Sq. Ft.	$1,706,894
12253 Alcosta Boulevard, San Ramon, CA 4 Beds \| 3 Baths \| 2448 Sq. Ft.	$1,621,836

This data may not show owner updates. Learn more.

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GreatSchools Ratings provided by GreatSchools.org.

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About this home

Redfin Estimate

Earn from this home

Market trends in 94583, CA

Sale history for 12257 Alcosta Blvd

Tax history for 12257 Alcosta Blvd

Zoning

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 12257 Alcosta Blvd

More real estate resources