OFF MARKET

Off Market Dec 2020 for $810K

$1,031,554

Est. refi paymentEst. refi $6,008/mo

•

1,094

sq ft

18239 Reamer Rd, Castro Valley, CA 94546

About this home

Large lot alert! This house sits in a great neighborhood in upper Castro Valley. The home is original but well maintained. It has a great layout with a large living room, 2 bedrooms and 1 bathroom. The home has a converted garage for extra living space. The crescent shaped street is quiet with views of Castro Valley. Close to parks, Lake Chabot, Chabot market and in the highly rated Castro Valley school district.

Single-familyProperty Type

1947Year Built

0.31 acresLot Size

$943Est. Price/Sq.Ft.

Listed by Rebecca Sayami •DRE #01461001 • KW Advisors East Bay

Bought with Nelson Lam •DRE #01444811 • Manderley Realty, Inc.

Redfin checked: a minute ago

•Source:bridgeMLS, Bay East AOR, or Contra Costa AOR #40922862

Redfin Estimate

$1,031,554

$222K since sold in December 2020$3,000 since August

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 16.2% higher than the average sale price ($888K) of 5 comparable homes.

SOLD JUL 13, 2026
$780,000
A
2 beds1 bath924 sq ft
18926 Walnut Rd, Castro Valley, CA 94546
SOLD JUN 30, 2026
18752 Carlton Ave, Castro Valley, CA 94546
$865,000
B
2 beds1 bath1,115 sq ft
18752 Carlton Ave, Castro Valley, CA 94546
SOLD APR 30, 2026
$830,000
C
2 beds1 bath1,055 sq ft
4199 Seven Hills Rd, Castro Valley, CA 94546
SOLD JUL 27, 2026
$1,064,000
D
3 beds2.5 baths1,226 sq ft
3488 Brookdale Blvd, Castro Valley, CA 94546
SOLD APR 6, 2026
$900,000
E
2 beds1 bath1,064 sq ft
4164 Seven Hills Rd, Castro Valley, CA 94546

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Earn from this home

Sell

$400,397

Est. take-home

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Refinance

Est. cash available

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Rent

$2,999/mo

Redfin rental estimate

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Market trends in 94546, CA

Last updated August 2026

Buyer's Market

Seller's Market

Seller's market

Sale-to-List Price

103.9%

1.3% MoM

Median sale price

$1.1M

$70K MoM

Avg. days on market

14d

1 days MoM

Recently sold homes

3 MoM

New listings for sale

COMING SOON
$599,950
2 beds2.5 baths866 sq ft
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2220 Farley St, Castro Valley, CA 94546
OPEN TODAY, 1PM TO 4PM
$1,550,000
3 beds1.5 baths1,851 sq ft
4618 Ewing Rd, Castro Valley, CA 94546
COMING SOON
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3 beds1.5 baths1,311 sq ft
4848 Mancini Dr, Castro Valley, CA 94546
OPEN TODAY, 2PM TO 4PM
$699,000
2 beds1 bath1,079 sq ft
18473 Apricot Way, Castro Valley, CA 94546
OPEN TODAY, 1PM TO 3PM
$979,000
4 beds2.5 baths1,980 sq ft
4101 Toddika Ln, Castro Valley, CA 94546
$999,000
4 beds2 baths1,680 sq ft
20275 Stanton Ave, Castro Valley, CA 94546
OPEN TODAY, 1:30PM TO 4PM
$799,000
2 beds2 baths1,122 sq ft
1540 Crescent Ave, Castro Valley, CA 94546
$1,175,000
3 beds2 baths1,440 sq ft
19453 Vaughn Ave, Castro Valley, CA 94546
Pacific Home Brokers
OPEN TODAY, 1PM TO 3PM
$695,000
2 beds1.5 baths1,207 sq ft
20279 Forest Ave, Castro Valley, CA 94546
(415) 510-8600
See all

Provided by Redfin

Sale history for 18239 Reamer Rd

Year

Property tax

Land + Additions

Assessment*

2025

$11,133 (+2.3%)

$263,028 + $613,732

$876,760

2024

$10,887 (+1.6%)

$263,028 + $613,732

$876,760

2023

$10,716 (+1.9%)

$257,871 + $601,700

$859,571

2022

$10,514 (+621.8%)

$247,860 + $578,340

$826,200

2021

$1,457 (+2.6%)

$247,860 + $578,340

$826,200

2020

$1,420 (−0.8%)

$38,733 + $29,446

$68,179

2019

$1,431 (+3.2%)

$38,335 + $29,144

$67,479

2018

$1,387 (+3.0%)

$37,584 + $28,572

$66,156

2017

$1,347 (+5.3%)

$36,125 + $27,463

$63,588

2016

$1,279 (+6.9%)

$36,125 + $27,463

$63,588

2015

$1,196 (+3.8%)

$35,416 + $26,925

$62,341

2014

$1,152 (+3.1%)

$34,201 + $26,001

$60,202

2013

$1,118 (+3.2%)

$34,201 + $26,001

$60,202

2012

$1,084 (+1.7%)

$34,047 + $25,883

$59,930

2011

$1,065 (+1.1%)

$33,379 + $25,376

$58,755

2010

$1,054 (+0.8%)

$32,725 + $24,878

$57,603

2009

$1,045 (+7.8%)

$32,480 + $24,692

$57,172

2008

$970

$32,557 + $24,751

$57,308

Tax history for 18239 Reamer Rd

Year

Property tax

Land + Additions

Assessment*

2025

$11,133 (+2.3%)

$263,028 + $613,732

$876,760

2024

$10,887 (+1.6%)

$263,028 + $613,732

$876,760

2023

$10,716 (+1.9%)

$257,871 + $601,700

$859,571

2022

$10,514 (+621.8%)

$247,860 + $578,340

$826,200

2021

$1,457 (+2.6%)

$247,860 + $578,340

$826,200

2020

$1,420 (−0.8%)

$38,733 + $29,446

$68,179

2019

$1,431 (+3.2%)

$38,335 + $29,144

$67,479

2018

$1,387 (+3.0%)

$37,584 + $28,572

$66,156

2017

$1,347 (+5.3%)

$36,125 + $27,463

$63,588

2016

$1,279 (+6.9%)

$36,125 + $27,463

$63,588

2015

$1,196 (+3.8%)

$35,416 + $26,925

$62,341

2014

$1,152 (+3.1%)

$34,201 + $26,001

$60,202

2013

$1,118 (+3.2%)

$34,201 + $26,001

$60,202

2012

$1,084 (+1.7%)

$34,047 + $25,883

$59,930

2011

$1,065 (+1.1%)

$33,379 + $25,376

$58,755

2010

$1,054 (+0.8%)

$32,725 + $24,878

$57,603

2009

$1,045 (+7.8%)

$32,480 + $24,692

$57,172

2008

$970

$32,557 + $24,751

$57,308

*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

0.31 Acres

Year renovated

1947

Sq. Ft.

1,094

Year built

1947

Style

Single Family Residential

County

Alameda County

APN

084D115501402

Parking Spaces

—

Basement

—

Accessible

—

HOA Dues

—

Garage

—

Features

—

Last updated by owner on Aug 24, 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
Parking Features: Off Street

Interior

Bathroom Information
# of Bathrooms Total: 1
# of Bathrooms Full: 1

Interior Features
Interior Features: Laminate Counters
Appliances: Dishwasher
Laundry Features: Laundry Room
Street Level Features: 2 Bedrooms, 1 Bath
Fireplaces Total: 1
Has Fireplace
Flooring: Laminate, Carpet

Room Information
Kitchen Features: Counter - Laminate,Dishwasher
Rooms Total: 5
Fireplace Features: Wood Stove Insert

Exterior

Building Information
Construction Materials: Shingle Siding
Building Area Total: 1,094

Exterior Features
Fencing: Back Yard
Roof: Shingle

Property Information
Living Area: 1094
Living Area Units: Square Feet
Property Type: Residential
Property Sub Type: Single Family Residence
Year Built: 1947

Lot Information
Lot Size Square Feet: 13706
Lot Size Area: 0.25
Lot Size Units: Acres
Lot Size Acres: 0.25
Lot Features: Sloped Down

Utilities

Utility Information
Water Source: Public
Sewer: Public Sewer

Heating & Cooling
Has Heating
Heating: Forced Air
Cooling: Ceiling Fan(s)

Public facts

Beds: 2
Baths: 1.0
Sq. Ft.: 1,094
Stories: 1.0
Lot Size: 0.31 acres
Style: Single Family Residential
Year Built: 1947
Year Renovated: 1947
County: Alameda County
APN: 084D115501402

Home facts updated by county records on Aug 24, 2026

Around this home

Schools

Chabot Elementary School

Public K-5 • Assigned • 0.6mi

9/10

Creekside Middle School

Public 6-8 • Assigned • 2.0mi

10/10

Castro Valley High School

Public 9-12 • Assigned • 1.0mi

9/10

Provided by GreatSchools

Lifestyle

Provided by Walk Score and Local Logic

Local insights from Redfin agents

Castro Valley is moving at a brisk pace this summer! Median prices are holding steady around $1.2M, but well-priced, turnkey homes are flying off the market in under 15 days, often over asking. Inventory is moving fast, so buyers must come prepared...
5 days 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...
2 months 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

0.62% 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

$980,000 – $1.19M

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New listings for sale in 94546

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OPEN TODAY, 1PM TO 4PM

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OPEN TODAY, 2PM TO 4PM

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OPEN TODAY, 1PM TO 3PM

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OPEN TODAY, 1:30PM TO 4PM

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Pacific Home Brokers

Home values near 18239 Reamer Rd

Data from public records.

Address	Redfin Estimate
18109 Reamer Rd, Castro Valley, CA 3 Beds \| 2 Baths \| 1999 Sq. Ft.	$1,390,148
18136 Reamer Rd, Castro Valley, CA 2 Beds \| 2 Baths \| 1587 Sq. Ft.	$1,180,626

Address	Redfin Estimate
18084 Reamer Rd, Castro Valley, CA 3 Beds \| 2 Baths \| 2201 Sq. Ft.	$1,506,869
18459 Reamer Rd, Castro Valley, CA 4 Beds \| 1 Baths \| 1669 Sq. Ft.	$1,191,223

Address	Redfin Estimate
18573 Reamer Rd, Castro Valley, CA 4 Beds \| 3 Baths \| 3133 Sq. Ft.	$1,909,480
18161 Reamer Rd, Castro Valley, CA 4 Beds \| 2 Baths \| 2118 Sq. Ft.	$1,354,879

Property information provided by bridgeMLS, Bay East AOR, or Contra Costa AOR when last listed in 2020. 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 18239 Reamer Rd

Tax history for 18239 Reamer 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 18239 Reamer Rd

More real estate resources