Google street view image for 3879 Modesto St, Castro Valley, CA 94546

Off market may 2006 for $700K

$1,118,242

Est. refi paymentEst. refi $4,433/mo

•

2 ba

•

1,688

sq ft

3879 Modesto St, Castro Valley, CA 94546

About this home

3879 Modesto St is a 1,688 square foot house on a 6,180 square foot lot with 4 bedrooms and 2 bathrooms. - it last sold on May 25, 2006 for $700,000. Based on Redfin's Castro Valley data, we estimate the home's value is $1,118,242.

Single-familyProperty Type

1950Year Built

6,180 sq ftLot Size

$662Est. Price/Sq.Ft.

1 car garageParking

Source:Public Records

Redfin Estimate

$1,118,242

$418K since sold in May 2006$18K since October

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 3.3% higher than the average sale price ($1.08M) of 6 comparable homes.

SOLD SEP 30, 2026
$1,060,000
A
3 beds2 baths1,591 sq ft
4315 Omega Ave, Castro Valley, CA 94546
SOLD JUN 9, 2026
$982,000
B
3 beds2 baths1,596 sq ft
20048 Sapphire St, Castro Valley, CA 94546
SOLD OCT 13, 2026
$1,135,000
C
3 beds2 baths1,740 sq ft
19026 Center St, Castro Valley, CA 94546
SOLD JUL 6, 2026
$960,000
D
4 beds2.5 baths1,433 sq ft
3570 Somerset Ave, Castro Valley, CA 94546
SOLD MAY 12, 2026
$1,430,000
E
3 beds2 baths1,528 sq ft
19113 San Miguel Ave, Castro Valley, CA 94546
SOLD SEP 24, 2026
$925,000
F
3 beds2 baths1,539 sq ft
20927 Nunes Ave, Castro Valley, CA 94546

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Earn from this home

Sell

$805,534

Est. take-home

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Refinance

Est. cash available

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Rent

$3,913/mo

Redfin rental estimate

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Market trends in 94546, CA

Last updated October 2026

Buyer's Market

Seller's Market

Seller's market

Sale-to-list price

104.0%

+0.6% MoM

Median sale price

$1.1M

$564 MoM

Avg. days on market

29d

10 days MoM

Recently sold homes

1 MoM

New listings for sale

OPEN FRI, 2PM TO 5PM
$828,000
3 beds1 bath1,031 sq ft
2375 Vegas Ave, Castro Valley, CA 94546
OPEN SAT, 2PM TO 4PM
$899,000
3 beds2 baths1,014 sq ft
18662 Stanton Ave, Castro Valley, CA 94546
(925) 398-6808
OPEN SAT, 1PM TO 4PM
$879,000
3 beds1 bath1,106 sq ft
3443 Middleton Ave, Castro Valley, CA 94546
OPEN SAT, 1:30PM TO 4:30PM
$1,290,000
4 beds2.5 baths1,896 sq ft
18362 Carlwyn Dr, Castro Valley, CA 94546
OPEN SAT, 2:30PM TO 4PM
$999,000
4 beds2 baths1,680 sq ft
20273-20275 Stanton Ave, Castro Valley, CA 94546
OPEN SUN, 2PM TO 4PM
$1,495,000
4 beds3 baths2,550 sq ft
5280 Dunnigan Ct, Castro Valley, CA 94546
(415) 655-9007
EARLY ACCESS
$550,000
2 beds2 baths1,393 sq ft
21239 Gary Dr #206, Hayward, CA 94546
OPEN SUN, 12:30PM TO 3:30PM
$796,000
2 beds1 bath906 sq ft
2247 Lessley Ave, Castro Valley, CA 94546
OPEN SAT, 1PM TO 4PM
$925,000
3 beds1 bath1,088 sq ft
18482 Ogilvie Dr, Castro Valley, CA 94546
$1,198,000
3 beds2.5 baths1,823 sq ft
3466 Arcadian Dr, Castro Valley, CA 94546
See all

Provided by Redfin

Sale history for 3879 Modesto St

Year

Property tax

Land + Additions

Assessment*

2025

$6,623 (+2.4%)

$124,913 + $379,544

$504,457

2024

$6,469 (+1.8%)

$122,464 + $372,104

$494,568

2023

$6,355 (+2.1%)

$120,063 + $364,809

$484,872

2022

$6,225 (+2.7%)

$115,402 + $350,646

$466,048

2021

$6,062 (+2.4%)

$115,402 + $350,646

$466,048

2020

$5,922 (−1.7%)

$113,140 + $343,773

$456,913

2019

$6,025 (+2.9%)

$111,980 + $340,249

$452,229

2018

$5,853 (+2.7%)

$109,786 + $333,580

$443,366

2017

$5,698 (+5.1%)

$105,524 + $320,631

$426,155

2016

$5,421 (+7.0%)

$105,524 + $320,631

$426,155

2015

$5,066 (+1.4%)

$103,456 + $314,346

$417,802

2014

$4,996 (+5.9%)

$99,907 + $303,563

$403,470

2013

$4,718 (+2.1%)

$99,907 + $303,563

$403,470

2012

$4,619 (+1.4%)

$99,456 + $281,387

$380,843

2011

$4,556 (+0.7%)

$97,506 + $275,872

$373,378

2010

$4,522 (−0.4%)

$95,595 + $270,464

$366,059

2009

$4,538 (+3.6%)

$94,881 + $268,443

$363,324

2008

$4,382

$95,106 + $269,082

$364,188

Tax history for 3879 Modesto St

Year

Property tax

Land + Additions

Assessment*

2025

$6,623 (+2.4%)

$124,913 + $379,544

$504,457

2024

$6,469 (+1.8%)

$122,464 + $372,104

$494,568

2023

$6,355 (+2.1%)

$120,063 + $364,809

$484,872

2022

$6,225 (+2.7%)

$115,402 + $350,646

$466,048

2021

$6,062 (+2.4%)

$115,402 + $350,646

$466,048

2020

$5,922 (−1.7%)

$113,140 + $343,773

$456,913

2019

$6,025 (+2.9%)

$111,980 + $340,249

$452,229

2018

$5,853 (+2.7%)

$109,786 + $333,580

$443,366

2017

$5,698 (+5.1%)

$105,524 + $320,631

$426,155

2016

$5,421 (+7.0%)

$105,524 + $320,631

$426,155

2015

$5,066 (+1.4%)

$103,456 + $314,346

$417,802

2014

$4,996 (+5.9%)

$99,907 + $303,563

$403,470

2013

$4,718 (+2.1%)

$99,907 + $303,563

$403,470

2012

$4,619 (+1.4%)

$99,456 + $281,387

$380,843

2011

$4,556 (+0.7%)

$97,506 + $275,872

$373,378

2010

$4,522 (−0.4%)

$95,595 + $270,464

$366,059

2009

$4,538 (+3.6%)

$94,881 + $268,443

$363,324

2008

$4,382

$95,106 + $269,082

$364,188

*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

Single-Family Residence Districts

Single-family residence districts, hereinafter designated as R-1 districts, are established to provide for and protect established neighborhoods of one-family dwellings, and to provide space in suitable locations for additional development of this kind, together with appropriate community facilities and allowance for restricted interim cultivation of the soil compatible with such low-density residential development.

Permitted uses

Include but are not limited to:

Housing-Single unit
Agriculture-Cropland
Agriculture-Grove / orchard

Mar 7, 2022 • Final

Residential roof-mounted solar pv, ess & electrical

Install a roof-mounted solar photovoltaic system on a residential building.

Electrical

Solar

Feb 23, 2022 • Final

Building

Remove and replace the roof on a residential building with new asphalt shingles. Use the existing roof deck.

Roofing

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

Heating & Cooling
Heating Fuel Type: Gas
Heating Type: Forced Air

Fireplace Information
# of Fireplaces: 1
Has Fireplace

Room Information
# of Rooms: 7

Exterior

Exterior Information
Physical Condition: Average
Foundation Type: Raised W/Crawlspace
Building Style Type: Rectangular Design
Construction Type: Wood
Building Construction Quality: Average
Exterior Wall: Wood
Building Type: Detached

Property Information
Living Sq. Ft: 1,688
Building Sq. Ft: 1,688
# of Units: 1
# of Stories: 1
Legal Description: TRACT 1011 BLK 1 LOT 1

Parking & Garage Information
# of Parking Spaces: 1
Parking Type: Undefined Type - 1 Car Garage
Garage / Carport Type: Undefined Type - 1 Car

Lot Information
# of Buildings: 1
Land Sq. Ft: 6,180
Legal Lot Number: 1
Legal Block Number: 1
Municipality Name: CASTRO VALLEY UNINCORP
Acres: 0.1419
Zoning Code: R-1
County Use Description: SINGLE FAMILY RESIDENTIAL HOME

Utility Information
Sewer Type: Public
Water Service Type: Public

Financial

Assessor Information
Assessment Year: 2026

Public facts

Beds: 4
Baths: 2.0
Sq. Ft.: 1,688
Stories: 1.0
Lot Size: 6,180 square feet
Style: Single Family Residential
Year Built: 1950
Year Renovated: 1957
County: Alameda County
APN: 084C076801000

Home facts updated by county records on Sep 17, 2026

Around this home

Schools

K - 12
Preschool & daycare

Marshall Elementary School

Public K-5 • Assigned • 0.3mi

9/10

Creekside Middle School

Public 6-8 • Assigned • 0.7mi

10/10

Castro Valley High School

Public 9-12 • Assigned • 0.5mi

9/10

Provided by GreatSchools

Lifestyle

Provided by Walk Score and Local Logic

Local insights from Redfin agents

Castro Valley remains a highly competitive market. On average, homes are selling for 103.7% of their asking price, with nearly 60% of properties closing above list price.
3 weeks ago • Castro Valley
Karan Kandel
Redfin agent
12 deals
Was this helpful?
Castro Valley's fall market offers great buyer leverage. While median prices hold steady around $1.2M, increased inventory gives you room to negotiate on homes needing updates. Turnkey properties still move fast in under 15 days, so act quickly with...
1 month ago • Castro Valley
Johnny Singh
Redfin Premier agent
139 deals
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Climate risks

1/10 Flood Factor

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

3/10 Fire Factor

0.46% chance of being in a wildfire in next 30 years

4/10 Heat Factor

7 days above 88° expected this year, 14 days in 30 years

1/10 Wind Factor

Minimal risk of severe winds over next 30 years

7/10 Air Factor

12 unhealthy days expected this year, 12 days in 30 years

Provided by First Street

Historical weather

Castro Valley, CA • 94546

Average low and high temperatures (°F)

63°

43°

64°

46°

71°

49°

69°

49°

73°

53°

74°

54°

75°

57°

79°

57°

79°

60°

73°

53°

65°

48°

61°

46°

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Sun exposure

In this area, properties receive around 11.2 hours in June and 4.9 hours in December, placing it above the U.S. average for solar exposure.

11.2 hrs

4.9 hrs

JuneDecember

Provided by Shadowmap

Estimated sale price

$1.06M – $1.29M

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Home values near 3879 Modesto St

Data from public records.

Address	Redfin Estimate
3872 Modesto St, Castro Valley, CA 3 Beds \| 2 Baths \| 1653 Sq. Ft.	$1,051,666
3855 Modesto St, Castro Valley, CA 3 Beds \| 2 Baths \| 1476 Sq. Ft.	$966,115
3863 Modesto St, Castro Valley, CA 3 Beds \| 2 Baths \| 1457 Sq. Ft.	$821,896
3871 Modesto St, Castro Valley, CA 2 Beds \| 1 Baths \| 1059 Sq. Ft.	$784,516
20168 Catalina Dr, Castro Valley, CA 3 Beds \| 2 Baths \| 1595 Sq. Ft.	$1,021,667
20191 Catalina Dr, Castro Valley, CA 3 Beds \| 1 Baths \| 1030 Sq. Ft.	$925,155
20101 Catalina Dr, Castro Valley, CA 4 Beds \| 2 Baths \| 2154 Sq. Ft.	$1,308,127

Address	Redfin Estimate
3856 Modesto St, Castro Valley, CA 3 Beds \| 2 Baths \| 1575 Sq. Ft.	$1,047,170
3839 Modesto St, Castro Valley, CA 3 Beds \| 2 Baths \| 1392 Sq. Ft.	$944,412
3880 Modesto St, Castro Valley, CA 2 Beds \| 1 Baths \| 1059 Sq. Ft.	$802,410
3840 Modesto St, Castro Valley, CA 2 Beds \| 1 Baths \| 893 Sq. Ft.	$813,310
20232 Catalina Dr, Castro Valley, CA 3 Beds \| 2 Baths \| 1314 Sq. Ft.	$904,565
20218 Catalina Dr, Castro Valley, CA 3 Beds \| 1 Baths \| 1265 Sq. Ft.	$901,907
20192 Catalina Dr, Castro Valley, CA 2 Beds \| 1 Baths \| 1049 Sq. Ft.	$768,490

Address	Redfin Estimate
3847 Modesto St, Castro Valley, CA 2 Beds \| 1 Baths \| 1059 Sq. Ft.	$779,627
3864 Modesto St, Castro Valley, CA 3 Beds \| 2 Baths \| 1179 Sq. Ft.	$1,146,982
3848 Modesto St, Castro Valley, CA 3 Beds \| 2 Baths \| 1294 Sq. Ft.	$993,743
20136 Catalina Dr, Castro Valley, CA 3 Beds \| 1 Baths \| 1017 Sq. Ft.	$886,976
20124 Catalina Dr, Castro Valley, CA 3 Beds \| 1 Baths \| 1107 Sq. Ft.	$904,202
20123 Catalina Dr, Castro Valley, CA 2 Beds \| 1 Baths \| 1010 Sq. Ft.	$795,583
20148 Catalina Dr, Castro Valley, CA 3 Beds \| 1 Baths \| 1017 Sq. Ft.	$890,722

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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 94546, CA

Sale history for 3879 Modesto St

Tax history for 3879 Modesto St

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 94546

Home values near 3879 Modesto St

More real estate resources