3742 Castle Rock Rd, Diamond Bar, CA 91765

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Off market may 2018 for $697K

$1,037,933

Est. refi paymentEst. refi $3,095/mo

•

2,100

sq ft

3742 Castle Rock Rd, Diamond Bar, CA 91765

About this home

Super clean and newly remodeled two story home with 2 full bedrooms + 1 bath upstairs and 2 bedrooms + 1 bath downstairs; good size swimming pool; walk-in closet in each bedroom. This well maintained house has over $100k upgrades including tile roof, laminate floor, new dual pane windows and sliding doors, new scraped ceiling, newly remodeled and tiled bathrooms, and newly remodeled kitchen with granite counter top, new cabinets; fireplace in both living room and family room; very convenient location in a nice neighborhood close to shops, restaurants and parks. Easy access to 60 & 57 freeway. Award winning Walnut school district.

Single-familyProperty Type

1963Year Built

7,713 sq ftLot Size

$494Est. Price/Sq.Ft.

2 car garageParking

Listed by Tony Chang •DRE #01914980 • 168 Realty Inc.

Listed by Jiahui Liu •DRE #01948557 • 168 Realty Inc.

Bought with Qi Lee •DRE #01455377 • PARTNER Real Estate

Redfin checked: a minute ago

•Source:CRMLS #TR18087067

Redfin Estimate

$1,037,933

$341K since sold in May 2018$24K since September

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 6.1% higher than the average sale price ($978K) of 6 comparable homes.

SOLD FEB 27, 2026
$1,030,000
A
4 beds2 baths1,756 sq ft
2710 Castle Rock Rd, Diamond Bar, CA 91765
SOLD OCT 31, 2025
$948,880
B
4 beds2 baths1,662 sq ft
3702 Crooked Creek Dr, Diamond Bar, CA 91765
SOLD SEP 28, 2026
$1,110,000
C
4 beds2 baths2,108 sq ft
3147 Fallow Fld, Diamond Bar, CA 91765
SOLD SEP 17, 2026
$930,000
D
3 beds2 baths1,300 sq ft
2726 Castle Rock, Diamond Bar, CA 91765
SOLD JUL 31, 2026
$875,000
E
3 beds2 baths1,300 sq ft
21245 Cold Spg, Diamond Bar, CA 91765
SOLD JUL 31, 2026
$975,000
F
3 beds2 baths1,300 sq ft
2606 Castle Rock Rd, Diamond Bar, CA 91765
Synergy Real Estate

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Earn from this home

Sell

$519,617

Est. take-home

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Refinance

Est. cash available

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Rent

$3,494/mo

Redfin rental estimate

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Market trends in 91765, CA

Last updated September 2026

Buyer's Market

Seller's Market

Balanced market

Sale-to-List Price

98.5%

0.6% MoM

Median sale price

$1.1M

$10K MoM

Avg. days on market

43d

1 days MoM

Recently sold homes

100

5 MoM

New listings for sale

FOR SALE BY OWNER
$1,200,000
3 beds2 baths1,339 sq ft
512 Armitos Pl, Diamond Bar, CA 91765
COMING SOON
$899,000
3 beds2 baths1,274 sq ft
22922 Dry Crk, Diamond Bar, CA 91765
OPEN SUN, 3PM TO 5PM
$1,499,900
5 beds3 baths3,203 sq ft
24215 Delta Dr, Diamond Bar, CA 91765
$468,000
2 beds2.5 baths1,056 sq ft
22871 Hilton Head Dr #230, Diamond Bar, CA 91765
OPEN SUN, 11AM TO 3PM
$1,363,000
4 beds5 baths2,430 sq ft
883 Terrace W, Pomona, CA 91765
$1,050,000
4 beds2 baths1,859 sq ft
23547 Decorah, Diamond Bar, CA 91765
$1,080,000
4 beds2 baths1,600 sq ft
239 N Palo Cedro, Diamond Bar, CA 91765
OPEN SUN, 1PM TO 4PM
$1,250,000
4 beds3 baths2,522 sq ft
830 Coldstream Ct, Diamond Bar, CA 91765
OPEN SUN, 2PM TO 4PM
$1,000,000
3 beds2 baths1,436 sq ft
23433 Quail Summit Dr, Diamond Bar, CA 91765
OPEN SUN, 1PM TO 4PM
$1,595,000
5 beds3 baths3,203 sq ft
1112 Summitridge, Diamond Bar, CA 91765
See all

Provided by Redfin

Sale history for 3742 Castle Rock Rd

Date

Event

Price

CRMLS #TR18087067

May 22, 2018

Sold

$697,000

$332/sq ft

Apr 25, 2018

Pending

—

Apr 17, 2018

Listed

$695,000

$331/sq ft

CRMLS #TR16104417

May 16, 2016

Listed

$729,000

$347/sq ft

CRMLS #H10098808

Dec 14, 2010

Sold

$465,000

$221/sq ft

Dec 10, 2010

Pending

—

Nov 17, 2010

Pending

—

Sep 15, 2010

Listed

$495,000

$236/sq ft

Super clean and newly remodeled two story pool home with 2 bedrooms + 1 bath upstairs and 2 bedrooms + 1 bath downstairs; walk-in closet in each bedroom; well maintained house with over $70k upgrades including new tile roof, new dual pane windows & sliding doors, new scraped ceiling, new remodeled bathrooms, and new remodeled kitchen with granite counter top, new cabinets & recess lights; fireplace in both living room and family room; very convenient location in a nice neighborhood, easy access to 60 & 57 freeway; located in the best Walnut Valley School District, walking distance to Castle Rock Elem and D. B. High.

CRMLS #H10075943

Sep 9, 2010

Listing Removed

—

Aug 19, 2010

Price Changed

$500,000

$238/sq ft

Aug 5, 2010

Price Changed

$529,800

$252/sq ft

Jul 16, 2010

Listed

$549,800

$262/sq ft

CRMLS #P329586

Jul 29, 2003

Sold

$397,000

$189/sq ft

Feb 6, 2003

Listed

$397,000

$189/sq ft

CRMLS #P310194

Feb 6, 2003

Listing Removed

—

Sep 11, 2002

Listed

$410,000

$195/sq ft

Public Records

Oct 19, 1967

Sold

$21,500

$10/sq ft

Year

Property tax

Land + Additions

Assessment*

2025

$10,251 (+5.9%)

$598,950 + $194,111

$793,061

2024

$9,678 (+3.5%)

$598,950 + $194,111

$793,061

2023

$9,348 (+2.1%)

$587,206 + $190,305

$777,511

2022

$9,152 (+1.9%)

$575,693 + $186,574

$762,267

2021

$8,981 (+1.3%)

$564,405 + $182,916

$747,321

2020

$8,866 (+2.0%)

$553,339 + $179,330

$732,669

2019

$8,695 (+36.0%)

$547,666 + $177,492

$725,158

2018

$6,393 (+4.8%)

$536,928 + $174,012

$710,940

2017

$6,102 (+3.1%)

$333,818 + $179,494

$513,312

2016

$5,917 (−0.6%)

$333,818 + $179,494

$513,312

2015

$5,951 (−0.1%)

$327,273 + $175,975

$503,248

2014

$5,957 (+1.1%)

$316,044 + $169,937

$485,981

2012

$5,890 (+2.7%)

$314,616 + $169,169

$483,785

2011

$5,736 (+6.3%)

$308,448 + $165,852

$474,300

2010

$5,397 (+0.3%)

$302,400 + $162,600

$465,000

2009

$5,379 (+2.8%)

$272,610 + $164,665

$437,275

2008

$5,233

$273,258 + $165,057

$438,315

Tax history for 3742 Castle Rock Rd

Year

Property tax

Land + Additions

Assessment*

2025

$10,251 (+5.9%)

$598,950 + $194,111

$793,061

2024

$9,678 (+3.5%)

$598,950 + $194,111

$793,061

2023

$9,348 (+2.1%)

$587,206 + $190,305

$777,511

2022

$9,152 (+1.9%)

$575,693 + $186,574

$762,267

2021

$8,981 (+1.3%)

$564,405 + $182,916

$747,321

2020

$8,866 (+2.0%)

$553,339 + $179,330

$732,669

2019

$8,695 (+36.0%)

$547,666 + $177,492

$725,158

2018

$6,393 (+4.8%)

$536,928 + $174,012

$710,940

2017

$6,102 (+3.1%)

$333,818 + $179,494

$513,312

2016

$5,917 (−0.6%)

$333,818 + $179,494

$513,312

2015

$5,951 (−0.1%)

$327,273 + $175,975

$503,248

2014

$5,957 (+1.1%)

$316,044 + $169,937

$485,981

2012

$5,890 (+2.7%)

$314,616 + $169,169

$483,785

2011

$5,736 (+6.3%)

$308,448 + $165,852

$474,300

2010

$5,397 (+0.3%)

$302,400 + $162,600

$465,000

2009

$5,379 (+2.8%)

$272,610 + $164,665

$437,275

2008

$5,233

$273,258 + $165,057

$438,315

*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

Beds

Baths

Stories

—

Lot width

—

Lot depth

—

Lot size

7,715 Sq. Ft.

Year renovated

1964

Sq. Ft.

2,100

Year built

1963

Style

Single Family Residential

County

Los Angeles County

APN

8714017009

Parking Spaces

—

Basement

—

Accessible

—

HOA Dues

—

Garage

—

Features

—

Last updated by owner on Aug 30, 2026.

RLM

Low/Medium Density Residential District

The RLM zoning district is intended primarily for existing subdivided areas developed with detached single-family dwellings. The maximum allowed density for new residential subdivisions within this zoning district will be five dwellings per gross acre. The RLM zoning district is consistent with the low density residential land use category of the general plan.

Permitted uses

Include but are not limited to:

Housing-Single unit
Housing-Senior
Housing-Other
Infrastructure
Fire house
Police station
Park & open space

Property details

Parking

Parking / Garage Information
Attached Garage
# of Garage Spaces: 2
Garage
Has Parking
# of Parking Spaces: 2

Interior

Laundry Information
Has Laundry
Individual Room

Kitchen Information
Appliances: Dishwasher, Garbage Disposal
Has Appliances
Granite Counters

Bathroom Information
# of Baths (Full): 2

Cooling Information
Central
Has Cooling

Room Information
Family Room, Kitchen, Laundry, Living Room, Main Floor Bedroom

Fireplace Information
Living Room
Has Fireplace

Flooring Information
Laminated

Interior Features
Levels: Two
Main Level Bathrooms: 1
Main Level Bedrooms: 2

Exterior

Exterior Features
Pool Features: Private, In Ground
Has Pool

Lot Information
Elevation Units: Feet
Lot Size Source: Assessor's Data
Lot Features: Park Nearby

Property Information
Total # of Units: 1
Common Walls: No Common Walls
Parcel Number: 8714017009
Year Built Source: Assessor

Financial

Assesments Information
Assessments: Unknown

Utilities

Utilities Information
Sewer: Public Sewer
Water Source: District/Public

Location

Multi-Unit Information
# of Units In Community: 1

Neighborhood Information
Community Features: Sidewalks

School Information
High School: Diamond Bar
High School District: Walnut Valley Unified
High School 2: DIABAR

Location Information
Latitude: 33.96200700
Longitude: -117.85156500
Directions: Diamond Bar Blvd & S Brea Canyon
Zoning: LCR17500*

Public facts

Beds: 4
Baths: 2.0
Sq. Ft.: 2,100
Stories: —
Lot Size: 7,715 square feet
Style: Single Family Residential
Year Built: 1963
Year Renovated: 1964
County: Los Angeles County
APN: 8714017009

Home facts updated by county records on Aug 30, 2026

Other

Listing Information
Days Active in MLS: 6
Continuous Days Active in MLS: 6

Listing Agent Information
List Agent First Name: Tony
List Agent Last Name: Chang
Co-List Agent First Name: Jiahui
Co-List Agent Last Name: Liu

Listing Office Information
List Office Name: 168 Realty Inc.
Co-List Office Name: 168 Realty Inc.

Selling Agent Information
Buyer Agent First Name: Qi
Buyer Agent Last Name: Lee

Selling Office Information
Buyer Office Name: Re/Max Titanium

Around this home

Schools

Castle Rock Elementary School

Public K-5 • Assigned • 0.8mi

10/10

South Pointe Middle School

Public 6-8 • Assigned • 2.0mi

10/10

Diamond Bar High School

Public 9-12 • Assigned • 1.5mi

10/10

Provided by GreatSchools

Lifestyle

Provided by Walk Score and Local Logic

Climate risks

6/10 Flood Factor

Estimated 67-75% chance of a flood reaching the building in the next 30 years

5/10 Fire Factor

7% chance of being in a wildfire in next 30 years

6/10 Heat Factor

7 days above 99° expected this year, 20 days in 30 years

1/10 Wind Factor

Minimal risk of severe winds over next 30 years

7/10 Air Factor

13 unhealthy days expected this year, 14 days in 30 years

Provided by First Street

Historical weather

Diamond Bar, CA • 91765

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 9.5 hours in June and 6.9 hours in December, placing it above the U.S. average for solar exposure.

9.5 hrs

6.9 hrs

JuneDecember

Provided by Shadowmap

Estimated sale price

$987,000 – $1.19M

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22871 Hilton Head Dr #230, Diamond Bar, CA 91765

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Home values near 3742 Castle Rock Rd

Data from public records.

Address	Redfin Estimate
3705 Castle Rock Rd, Diamond Bar, CA 4 Beds \| 2 Baths \| 1724 Sq. Ft.	$949,748
3725 Castle Rock Rd, Diamond Bar, CA 3 Beds \| 2 Baths \| 1448 Sq. Ft.	$845,698

Address	Redfin Estimate
3711 Castle Rock Rd, Diamond Bar, CA 3 Beds \| 2 Baths \| 1521 Sq. Ft.	$862,289
3731 Castle Rock Rd, Diamond Bar, CA 4 Beds \| 2 Baths \| 1724 Sq. Ft.	$988,333

Address	Redfin Estimate
3719 Castle Rock Rd, Diamond Bar, CA 4 Beds \| - Baths \| 2164 Sq. Ft.	$1,020,864
3737 Castle Rock Rd, Diamond Bar, CA 3 Beds \| 2 Baths \| 1521 Sq. Ft.	$893,138

Property information provided by CRMLS when last listed in 2018. 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 91765, CA

Sale history for 3742 Castle Rock Rd

Tax history for 3742 Castle Rock Rd

Public record

Property details

Around this home

Schools

Lifestyle

Climate risks

Historical weather

Sun exposure

Nearby similar homes

New listings for sale in 91765

Home values near 3742 Castle Rock Rd

More real estate resources