OFF MARKET

Off Market Dec 2013 for $525K

$1,044,886

Est. refi paymentEst. refi $2,122/mo

•

1,124

sq ft

18857 Sandy Rd, Castro Valley, CA 94546

About this home

Single-familyProperty Type

1947Year Built

0.25 acresLot Size

$930Est. Price/Sq.Ft.

2 car garageParking

Listed by Catherine Brent •DRE #01088138 • BHHS Drysdale Properties

Listed by Kathi Townsend •DRE #01409032 • Berkshire Hathaway Home Services

Bought with Sam Chiu •DRE #01056729 • Berkshire Hathaway Home Services

Redfin checked: 4 minutes ago

•Source:bridgeMLS, Bay East AOR, or Contra Costa AOR #40633557

Redfin Estimate

$1,044,886

$519K since sold in December 2013$5,000 since July

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 3.4% higher than the average sale price ($1.01M) of 6 comparable homes.

SOLD MAY 21, 2026
$868,000
A
2 beds1 bath854 sq ft
4577 Sargent Ave, Castro Valley, CA 94546
SOLD JUN 12, 2026
$1,250,000
B
3 beds1.5 baths1,743 sq ft
4596 James Ave, Castro Valley, CA 94546
SOLD MAY 18, 2026
$930,000
C
3 beds1 bath1,028 sq ft
4835 Kathleen Ave, Castro Valley, CA 94546
SOLD APR 30, 2026
$830,000
D
2 beds1 bath1,055 sq ft
4199 Seven Hills Rd, Castro Valley, CA 94546
SOLD JUL 1, 2026
$1,310,000
E
3 beds2 baths1,340 sq ft
4880 Mancini Dr, Castro Valley, CA 94546
SOLD APR 6, 2026
$873,000
F
2 beds1 bath1,003 sq ft
18810 Madison Ave, Castro Valley, CA 94546

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Earn from this home

Sell

$690,029

Est. take-home

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Refinance

Est. cash available

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Rent

$3,080/mo

Redfin rental estimate

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Market trends in 94546, CA

Last updated July 2026

Buyer's Market

Seller's Market

Seller's market

Sale-to-List Price

105.6%

+0.7% MoM

Median sale price

$1.1M

$45K MoM

Avg. days on market

13d

1 days MoM

Recently sold homes

100

5 MoM

New listings for sale

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$799,000
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OPEN SUN, 12PM TO 4PM
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$1,175,000
3 beds2 baths1,440 sq ft
19453 Vaughn Ave, Castro Valley, CA 94546
Pacific Home Brokers
OPEN TODAY, 12PM TO 2PM
$695,000
2 beds1.5 baths1,207 sq ft
20279 Forest Ave, Castro Valley, CA 94546
(415) 510-8600
OPEN TODAY, 11AM TO 1PM
$870,000
3 beds1 bath1,080 sq ft
2976 Sydney, Castro Valley, CA 94546
COMING SOON
$1,550,000
3 beds1.5 baths1,851 sq ft
4618 Ewing Rd, Castro Valley, CA 94546
OPEN TODAY, 1PM TO 4PM
$699,999
3 beds1 bath1,036 sq ft
19117 Parsons Ave, Castro Valley, CA 94546
OPEN SUN, 2PM TO 4PM
$549,950
3 beds2 baths1,354 sq ft
21239 Gary Dr Unit 202E, Hayward, CA 94546
OPEN TODAY, 1PM TO 4PM
$1,235,000
3 beds2 baths1,581 sq ft
18747 Sandy Rd, Castro Valley, CA 94546
OPEN TODAY, 1PM TO 4PM
$1,095,000
4 beds2.5 baths1,988 sq ft
16630 Cowell St, Castro Valley, CA 94578
VIDEO TOUR
$1,899,000
4 beds3.5 baths3,379 sq ft
16989 Brierly Ct, Castro Valley, CA 94546
See all

Provided by Redfin

Sale history for 18857 Sandy Rd

Year

Property tax

Land + Additions

Assessment*

2025

$8,388 (+2.3%)

$193,187 + $450,975

$644,162

2024

$8,198 (+1.7%)

$193,187 + $450,975

$644,162

2023

$8,062 (+2.0%)

$189,400 + $442,134

$631,534

2022

$7,903 (+2.6%)

$182,046 + $424,968

$607,014

2021

$7,700 (+2.3%)

$182,046 + $424,968

$607,014

2020

$7,523 (−1.8%)

$178,478 + $416,639

$595,117

2019

$7,659 (+2.9%)

$176,649 + $412,368

$589,017

2018

$7,441 (+2.7%)

$173,186 + $404,285

$577,471

2017

$7,245 (+5.1%)

$166,463 + $388,590

$555,053

2016

$6,893 (+7.0%)

$166,463 + $388,590

$555,053

2015

$6,442

$163,199 + $380,971

$544,170

2014

$6,441 (+459.4%)

$157,600 + $367,900

$525,500

2013

$1,151 (+3.1%)

$157,600 + $367,900

$525,500

2012

$1,117 (+1.7%)

$37,431 + $25,485

$62,916

2011

$1,098 (+1.1%)

$36,697 + $24,985

$61,682

2010

$1,086 (+0.8%)

$35,978 + $24,496

$60,474

2009

$1,078 (+7.6%)

$35,709 + $24,312

$60,021

2008

$1,002

$35,794 + $24,370

$60,164

Tax history for 18857 Sandy Rd

Year

Property tax

Land + Additions

Assessment*

2025

$8,388 (+2.3%)

$193,187 + $450,975

$644,162

2024

$8,198 (+1.7%)

$193,187 + $450,975

$644,162

2023

$8,062 (+2.0%)

$189,400 + $442,134

$631,534

2022

$7,903 (+2.6%)

$182,046 + $424,968

$607,014

2021

$7,700 (+2.3%)

$182,046 + $424,968

$607,014

2020

$7,523 (−1.8%)

$178,478 + $416,639

$595,117

2019

$7,659 (+2.9%)

$176,649 + $412,368

$589,017

2018

$7,441 (+2.7%)

$173,186 + $404,285

$577,471

2017

$7,245 (+5.1%)

$166,463 + $388,590

$555,053

2016

$6,893 (+7.0%)

$166,463 + $388,590

$555,053

2015

$6,442

$163,199 + $380,971

$544,170

2014

$6,441 (+459.4%)

$157,600 + $367,900

$525,500

2013

$1,151 (+3.1%)

$157,600 + $367,900

$525,500

2012

$1,117 (+1.7%)

$37,431 + $25,485

$62,916

2011

$1,098 (+1.1%)

$36,697 + $24,985

$61,682

2010

$1,086 (+0.8%)

$35,978 + $24,496

$60,474

2009

$1,078 (+7.6%)

$35,709 + $24,312

$60,021

2008

$1,002

$35,794 + $24,370

$60,164

*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

Baths

Stories

Lot width

—

Lot depth

—

Lot size

0.25 Acres

Year renovated

1947

Sq. Ft.

1,124

Year built

1947

Style

Single Family Residential

County

Alameda County

APN

084C081600600

Parking Spaces

—

Basement

—

Accessible

—

HOA Dues

—

Garage

—

Features

—

Last updated by owner on Jul 27, 2026.

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

Property details

Parking

Parking Information
Garage Spaces: 2
Covered Spaces: 2
Parking Features: Detached, Off Street, RV/Boat Parking, Side Yard Access, Workshop in Garage, Garage Door Opener

Interior

Bathroom Information
# of Bathrooms Total: 1
# of Bathrooms Full: 1
Other Bathrooms Included Features: Stall Shower, Tub, Updated Baths

Interior Features
Interior Features: Dining Area, Workshop, Updated Kitchen
Appliances: Gas Range, Free-Standing Range, Gas Water Heater
Laundry Features: Hookups Only, Laundry Room
Street Level Features: 2 Bedrooms, 1 Bath, Laundry Facility, Main Entry
Fireplaces Total: 1
Has Fireplace
Flooring: Hardwood, Linoleum, Tile, Carpet

Room Information
Kitchen Features: Gas Range/Cooktop,Range/Oven Free Standing,Updated Kitchen
Rooms Total: 5
Fireplace Features: Brick, Insert, Living Room
Basement: Crawl Space, Partial

Exterior

Building Information
Construction Materials: Stone, Wood Siding
Building Area Total: 1,124

Exterior Features
Patio And Porch Features: Patio, Covered
Exterior Features: Back Yard, Front Yard, Garden/Play, Side Yard, Sprinklers Automatic
Fencing: Fenced
Roof: Shingle

Property Information
Living Area: 1124
Living Area Units: Square Feet
Property Type: Residential
Property Sub Type: Single Family Residence
Year Built: 1947

Lot Information
Other Structures: Shed(s)
Lot Size Square Feet: 10998
Lot Size Area: 0.252479
Lot Size Units: Acres
Lot Size Acres: 0.252479
Lot Features: Level, Premium Lot
Zoning: 1001

Utilities

Utility Information
Water Source: Public
Sewer: Public Sewer

Heating & Cooling
Has Heating
Heating: Forced Air, Natural Gas
Cooling: Central Air

Public facts

Beds: 2
Baths: 1.0
Sq. Ft.: 1,124
Stories: 1.0
Lot Size: 0.25 acres
Style: Single Family Residential
Year Built: 1947
Year Renovated: 1947
County: Alameda County
APN: 084C081600600

Home facts updated by county records on Jul 27, 2026

Around this home

Schools

Proctor Elementary School

Public K-5 • Assigned • 0.7mi

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's late-summer market shows a clear split. While median prices hold near $1.2M, increased inventory gives buyers leverage on older properties. However, immaculate homes still go pending in under 15 days. A strong, clean offer is key!
2 weeks ago • Castro Valley
Johnny Singh
Redfin Premier agent
146 deals
Was this helpful?
Strong buyer demand keeps the Castro Valley market moving incredibly fast. With homes frequently selling above their $1.2 million median price, decisive action is essential. To win here, buyers need to submit competitive offers quickly and minimize...
1 month ago • Castro Valley
Karan Kandel
Redfin agent
13 deals
Was this helpful?

Climate risks

1/10 Flood Factor

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

3/10 Fire Factor

0.77% chance of being in a wildfire in next 30 years

3/10 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)

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

$993,000 – $1.20M

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Home values near 18857 Sandy Rd

Data from public records.

Address	Redfin Estimate
18849 Sandy Rd, Castro Valley, CA 3 Beds \| 2 Baths \| 1666 Sq. Ft.	$1,338,964
18976 Sandy Rd, Castro Valley, CA 3 Beds \| 1 Baths \| 1704 Sq. Ft.	$1,234,400

Address	Redfin Estimate
18843 Sandy Rd, Castro Valley, CA 2 Beds \| 1 Baths \| 1369 Sq. Ft.	$1,037,859
18985 Sandy Rd, Castro Valley, CA 4 Beds \| 2.5 Baths \| 2366 Sq. Ft.	$1,784,874

Address	Redfin Estimate
18968 Sandy Rd, Castro Valley, CA 5 Beds \| 4 Baths \| 2500 Sq. Ft.	$1,485,144
18856 Sandy Rd, Castro Valley, CA 3 Beds \| 3 Baths \| 2308 Sq. Ft.	$1,258,801

Property information provided by bridgeMLS, Bay East AOR, or Contra Costa AOR when last listed in 2013. This data may not match . 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 94546, CA

Sale history for 18857 Sandy Rd

Tax history for 18857 Sandy Rd

Public record

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 18857 Sandy Rd

More real estate resources