18666 Summit Ct, Castro Valley, CA 94546

Off market jan 2019 for $815K

$1,499,211

Est. refi paymentEst. refi $5,433/mo

•

1,256

sq ft

18666 Summit Ct, Castro Valley, CA 94546

About this home

Wonderful upper Castro Valley location with view! This 3 bedroom, 1.5 bath home features upgraded kitchen, refinished hardwood floors, dual pane windows, mature fruit trees, fresh paint inside and out, and a workshop in the backyard. Great location on a cul-de-sac, short distance to hiking/biking trails and local parks. Award-winning Castro Valley school district. Easy access to major freeways, BART, shopping and entertainment.

Single-familyProperty Type

1952Year Built

6,760 sq ftLot Size

$1,194Est. Price/Sq.Ft.

2 car garageParking

Listed by Judy Grubb •DRE #01367593 • KW Advisors East Bay

Bought with Mani Bhachu •DRE #02054119 • Coldwell Banker Realty

Redfin checked: a minute ago

•Source:bridgeMLS, Bay East AOR, or Contra Costa AOR #40847482

Redfin Estimate

$1,499,211

$684K since sold in January 2019$21K since September

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 27.6% higher than the average sale price ($1.17M) of 6 comparable homes.

SOLD OCT 8, 2026
$1,290,000
A
3 beds2 baths1,386 sq ft
18367 Apricot Way, Castro Valley, CA 94546
SOLD JUL 1, 2026
$1,310,000
B
3 beds2 baths1,340 sq ft
4880 Mancini Dr, Castro Valley, CA 94546
SOLD SEP 18, 2026
$1,138,500
C
3 beds2 baths1,502 sq ft
5034 Rahlves Dr, Castro Valley, CA 94546
SOLD JUL 14, 2026
$1,150,000
D
3 beds2 baths1,681 sq ft
18650 Center St, Castro Valley, CA 94546
SOLD JUN 12, 2026
$1,150,000
E
3 beds2 baths1,576 sq ft
5239 Katrina Ct, Castro Valley, CA 94546
SOLD OCT 31, 2025
$1,010,000
F
3 beds2 baths1,212 sq ft
18760 Sandy Rd, Castro Valley, CA 94546

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Earn from this home

Sell

$871,502

Est. take-home

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Refinance

Est. cash available

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Rent

$3,612/mo

Redfin rental estimate

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Market trends in 94546, CA

Last updated September 2026

Buyer's Market

Seller's Market

Seller's market

Sale-to-list price

103.4%

0.6% MoM

Median sale price

$1.1M

$823 MoM

Avg. days on market

18d

3 days MoM

Recently sold homes

7 MoM

New listings for sale

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OPEN SUN, 1PM TO 4PM
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OPEN SUN, 1PM TO 4PM
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5 beds3 baths2,624 sq ft
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See all

Provided by Redfin

Sale history for 18666 Summit Ct

Year

Property tax

Land + Additions

Assessment*

2025

$11,560 (+2.3%)

$278,194 + $653,047

$931,241

2024

$11,306 (+1.6%)

$272,739 + $640,242

$912,981

2023

$11,129 (+2.3%)

$267,392 + $627,689

$895,081

2022

$10,877 (+2.6%)

$257,011 + $599,692

$856,703

2021

$10,600 (+1.5%)

$257,011 + $599,692

$856,703

2020

$10,441 (+574.2%)

$251,971 + $587,934

$839,905

2019

$1,549 (+3.1%)

$249,390 + $581,910

$831,300

2018

$1,502 (+3.0%)

$37,144 + $38,683

$75,827

2017

$1,458 (+5.2%)

$35,702 + $37,181

$72,883

2016

$1,386 (+7.0%)

$35,702 + $37,181

$72,883

2015

$1,295 (+3.5%)

$35,002 + $36,452

$71,454

2014

$1,251 (+2.9%)

$33,801 + $35,201

$69,002

2013

$1,216 (+3.0%)

$33,801 + $35,201

$69,002

2012

$1,180 (+1.7%)

$33,648 + $35,042

$68,690

2011

$1,161 (+1.1%)

$32,989 + $34,355

$67,344

2010

$1,148 (+0.7%)

$32,342 + $33,682

$66,024

2009

$1,140 (+7.3%)

$32,100 + $33,430

$65,530

2008

$1,063

$32,177 + $33,509

$65,686

Tax history for 18666 Summit Ct

Year

Property tax

Land + Additions

Assessment*

2025

$11,560 (+2.3%)

$278,194 + $653,047

$931,241

2024

$11,306 (+1.6%)

$272,739 + $640,242

$912,981

2023

$11,129 (+2.3%)

$267,392 + $627,689

$895,081

2022

$10,877 (+2.6%)

$257,011 + $599,692

$856,703

2021

$10,600 (+1.5%)

$257,011 + $599,692

$856,703

2020

$10,441 (+574.2%)

$251,971 + $587,934

$839,905

2019

$1,549 (+3.1%)

$249,390 + $581,910

$831,300

2018

$1,502 (+3.0%)

$37,144 + $38,683

$75,827

2017

$1,458 (+5.2%)

$35,702 + $37,181

$72,883

2016

$1,386 (+7.0%)

$35,702 + $37,181

$72,883

2015

$1,295 (+3.5%)

$35,002 + $36,452

$71,454

2014

$1,251 (+2.9%)

$33,801 + $35,201

$69,002

2013

$1,216 (+3.0%)

$33,801 + $35,201

$69,002

2012

$1,180 (+1.7%)

$33,648 + $35,042

$68,690

2011

$1,161 (+1.1%)

$32,989 + $34,355

$67,344

2010

$1,148 (+0.7%)

$32,342 + $33,682

$66,024

2009

$1,140 (+7.3%)

$32,100 + $33,430

$65,530

2008

$1,063

$32,177 + $33,509

$65,686

*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

6,760

Year renovated

1955

Sq. Ft.

1,256

Year built

1952

Style

Single Family Residential

County

Alameda County

APN

084C086901600

Parking Spaces

Basement

Accessible

HOA Dues

—

Garage

Yes

Features

—

Last updated by owner on May 27, 2024.

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

Jan 3, 2024 • Final

Building

Install a roof-mounted solar photovoltaic system and upgrade the main electrical meter panel to 125 amps.

Electrical

Solar

Nov 18, 2022 • Final

Building

Remodel a single-family home according to plans. Convert a half bathroom into a full bathroom by removing a closet and installing a new faucet, sink, LED lighting, shower wall surround, tub, fan, and shower valve. Relocate the door between the residence and the garage from the kitchen to the hallway.

Addition

Bathroom

Remodel

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

Parking

Parking Information
Has Attached Garage
Garage Spaces: 2
Covered Spaces: 2
Parking Features: Attached, Garage Door Opener

Interior

Virtual Tour

Bathroom Information
# of Bathrooms Total: 2
# of Bathrooms Full: 1
# of Bathrooms Partial: 1
Other Bathrooms Included Features: Tile, Updated Baths
Primary Bathroom Included Features: Solid Surface, Stall Shower, Tile, Tub, Updated Baths

Interior Features
Interior Features: Workshop, Stone Counters, Eat-in Kitchen, Updated Kitchen
Appliances: Dishwasher, Electric Range, Disposal, Microwave, Free-Standing Range, Refrigerator, Dryer, Washer, Gas Water Heater
Laundry Features: 220 Volt Outlet, Dryer, In Garage, Washer
Street Level Features: 3 Bedrooms, 1.5 Baths
Window Features: Window Coverings
Fireplaces Total: 1
Has Fireplace
Flooring: Hardwood, Tile

Room Information
Kitchen Features: Counter - Stone,Dishwasher,Eat In Kitchen,Electric Range/Cooktop,Garbage Disposal,Microwave,Range/Oven Free Standing,Refrigerator,Updated Kitchen
Rooms Total: 5
Fireplace Features: Brick, Living Room, Wood Burning
Basement: Crawl Space

Exterior

Building Information
Construction Materials: Stucco
Building Area Total: 1,256

Exterior Features
Patio And Porch Features: Deck, Patio
Exterior Features: Back Yard, Front Yard, Sprinklers Automatic
Door Features: Mirrored Closet Door(s)
Roof: Shingle

Property Information
Living Area: 1256
Living Area Units: Square Feet
Property Type: Residential
Property Sub Type: Single Family Residence
Year Built: 1952

Lot Information
Lot Size Square Feet: 6760
Lot Size Area: 0.16
Lot Size Units: Acres
Lot Size Acres: 0.16
Lot Features: Cul-De-Sac

Utilities

Utility Information
Water Source: Public
Sewer: Public Sewer

Heating & Cooling
Has Heating
Heating: Forced Air
Cooling: Ceiling Fan(s), No Air Conditioning

Location

School Information
High School District: Castro Valley (510) 537-3000

Public facts

Beds: 3
Baths: 2.0
Sq. Ft.: 1,256
Stories: 1.0
Parking Spaces: 2
Basement: No
Accessible: No
Lot Size: 6,760 square feet
Style: Single Family Residential
Year Built: 1952
Year Renovated: 1955
County: Alameda County
APN: 084C086901600
HOA Dues: —
Garage: Yes
Features: —

Home facts updated by owner on May 27, 2024

Around this home

Schools

Proctor Elementary School

Public K-5 • Assigned • 0.5mi

9/10

Canyon Middle School

Public 6-8 • Assigned • 0.9mi

7/10

Castro Valley High School

Public 9-12 • Assigned • 0.7mi

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.
2 weeks ago • Castro Valley
Karan Kandel
Redfin agent
13 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...
4 weeks ago • Castro Valley
Johnny Singh
Redfin Premier agent
149 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

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

4/10 Heat Factor

7 days above 88° expected this year, 15 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

$1.43M – $1.73M

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Home values near 18666 Summit Ct

Data from public records.

Address	Redfin Estimate
18690 Summit Court, Castro Valley, CA 3 Beds \| 2.5 Baths \| 1763 Sq. Ft.	$1,281,399
18674 Summit Court, Castro Valley, CA 3 Beds \| 1.5 Baths \| 1294 Sq. Ft.	$930,941

Address	Redfin Estimate
18659 Summit Court, Castro Valley, CA 3 Beds \| 1 Baths \| 1531 Sq. Ft.	$1,016,211
18667 Summit Court, Castro Valley, CA 4 Beds \| 3 Baths \| 2302 Sq. Ft.	$1,336,855

Address	Redfin Estimate
18658 Summit Court, Castro Valley, CA 3 Beds \| 2 Baths \| 1649 Sq. Ft.	$1,172,454
18675 Summit Court, Castro Valley, CA 5 Beds \| 4 Baths \| 2259 Sq. Ft.	$1,368,556

Property information provided by bridgeMLS, Bay East AOR, or Contra Costa AOR when last listed in 2018. 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 94546, CA

Sale history for 18666 Summit Ct

Tax history for 18666 Summit Ct

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 18666 Summit Ct

More real estate resources