3731 Castle Rock Rd, Diamond Bar, CA 91765

Off market dec 2020 for $697K

$988,333

Est. refi paymentEst. refi $4,050/mo

•

1,724

sq ft

3731 Castle Rock Rd, Diamond Bar, CA 91765

About this home

LOCATION!! LOCATION!! The home you have been waiting for is finally available. A true pride of ownership is found from the minute you pull up to this south Diamond Bar home, which is located within the boundaries of the prestigious Walnut School District. This 4 bedrooms and 2 bathroom home boasts double pane windows, hardwood floors, and a Spanish style tiled roof. In addition, the house comes equipped with a water softener and a reverse osmosis water purifying system! Large backyard with built in grill, gas fire pit, and fruit trees is perfect for entertaining your family and friends. This, along with the fact that it has been re painted inside and out, and fully re-piped with copper pipes, will surely make your buyer extremely happy to call this home! This one will not last so make sure to call for your appointment now!!!

Single-familyProperty Type

1963Year Built

7,903 sq ftLot Size

$573Est. Price/Sq.Ft.

2 car garageParking

Listed by Johnny Rojas •DRE #01051096 • RE/MAX TIME REALTY

Bought with Angie Tang •DRE #00982512 • FIRST TEAM REAL ESTATE

Redfin checked: 2 minutes ago

•Source:CRMLS #CV20191894

Redfin Estimate

$988,333

$291K since sold in December 2020$37K since September

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 3.3% higher than the average sale price ($956K) of 6 comparable homes.

SOLD OCT 31, 2025
$948,880
A
4 beds2 baths1,662 sq ft
3702 Crooked Creek Dr, Diamond Bar, CA 91765
SOLD FEB 27, 2026
$1,030,000
B
4 beds2 baths1,756 sq ft
2710 Castle Rock Rd, Diamond Bar, CA 91765
SOLD JUL 31, 2026
$875,000
C
3 beds2 baths1,300 sq ft
21245 Cold Spg, 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 JAN 21, 2026
$980,000
E
4 beds2 baths1,288 sq ft
2819 Castle Rock, 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

Claim this home to receive a free report every month with insights on the changing estimate.

Earn from this home

Sell

$440,703

Est. take-home

List your home with Redfin and save $4,942

Refinance

Est. cash available

Get cash now or lower your monthly rate

Rent

$3,292/mo

Redfin rental estimate

List your home for rent

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

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
OPEN SUN, 2PM TO 5PM
$2,490,000
5 beds3 baths6,144 sq ft
2145 Indian Crk, Diamond Bar, CA 91765
RE/MAX Galaxy
See all

Provided by Redfin

Sale history for 3731 Castle Rock Rd

Year

Property tax

Land + Additions

Assessment*

2025

$9,936 (+5.3%)

$590,791 + $175,569

$766,360

2024

$9,437 (+3.5%)

$590,791 + $175,569

$766,360

2023

$9,114 (+2.1%)

$579,207 + $172,127

$751,334

2022

$8,925 (−5.8%)

$567,850 + $168,752

$736,602

2021

$9,470 (+189.0%)

$556,716 + $165,444

$722,160

2020

$3,277 (+1.9%)

$545,800 + $162,200

$708,000

2019

$3,216 (+5.6%)

$113,305 + $125,914

$239,219

2018

$3,045 (+4.5%)

$111,084 + $123,446

$234,530

2017

$2,913 (+3.4%)

$106,771 + $118,653

$225,424

2016

$2,817 (−0.5%)

$106,771 + $118,653

$225,424

2015

$2,830 (−0.2%)

$104,678 + $116,327

$221,005

2014

$2,837 (+1.5%)

$101,087 + $112,336

$213,423

2012

$2,796 (+3.0%)

$100,631 + $111,829

$212,460

2011

$2,715 (+0.9%)

$98,658 + $109,637

$208,295

2010

$2,691 (+0.7%)

$96,724 + $107,488

$204,212

2009

$2,671 (+3.1%)

$96,002 + $106,685

$202,687

2008

$2,592

$96,231 + $106,939

$203,170

Tax history for 3731 Castle Rock Rd

Year

Property tax

Land + Additions

Assessment*

2025

$9,936 (+5.3%)

$590,791 + $175,569

$766,360

2024

$9,437 (+3.5%)

$590,791 + $175,569

$766,360

2023

$9,114 (+2.1%)

$579,207 + $172,127

$751,334

2022

$8,925 (−5.8%)

$567,850 + $168,752

$736,602

2021

$9,470 (+189.0%)

$556,716 + $165,444

$722,160

2020

$3,277 (+1.9%)

$545,800 + $162,200

$708,000

2019

$3,216 (+5.6%)

$113,305 + $125,914

$239,219

2018

$3,045 (+4.5%)

$111,084 + $123,446

$234,530

2017

$2,913 (+3.4%)

$106,771 + $118,653

$225,424

2016

$2,817 (−0.5%)

$106,771 + $118,653

$225,424

2015

$2,830 (−0.2%)

$104,678 + $116,327

$221,005

2014

$2,837 (+1.5%)

$101,087 + $112,336

$213,423

2012

$2,796 (+3.0%)

$100,631 + $111,829

$212,460

2011

$2,715 (+0.9%)

$98,658 + $109,637

$208,295

2010

$2,691 (+0.7%)

$96,724 + $107,488

$204,212

2009

$2,671 (+3.1%)

$96,002 + $106,685

$202,687

2008

$2,592

$96,231 + $106,939

$203,170

*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

7,905 Sq. Ft.

Year renovated

1963

Sq. Ft.

1,724

Year built

1963

Style

Single Family Residential

County

Los Angeles County

APN

8714016018

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
# of Parking Spaces: 2

Interior

Laundry Information
Has Laundry
In Garage

Bathroom Information
# of Baths (Full): 2

Cooling Information
Central
Has Cooling

Room Information
Main Floor Bedroom

Fireplace Information
Living Room
Has Fireplace

Heating Information
Central Furnace
Has Heating

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

Exterior

Exterior Information
Structure Type: House

Exterior Features
Pool Features: None

Lot Information
Elevation Units: Feet
Lot Size Source: Assessor's Data
Lot Features: Back Yard, Front Yard

Property Information
Total # of Units: 1
Common Walls: No Common Walls
Parcel Number: 8714016018
Has View
Year Built Source: Assessor

Financial

Assesments Information
Assessments: Unknown

Utilities

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

Location

Neighborhood Information
Community Features: Curbs, Sidewalks

School Information
High School District: Walnut Valley Unified

Location Information
Latitude: 33.96250000
Longitude: -117.85189600
Directions: head south on Brea Canyon road from S Diamond Bar Blvd
Zoning: LCR17500*

Public facts

Beds: 4
Baths: 2.0
Sq. Ft.: 1,724
Stories: —
Lot Size: 7,905 square feet
Style: Single Family Residential
Year Built: 1963
Year Renovated: 1963
County: Los Angeles County
APN: 8714016018

Home facts updated by county records on Aug 30, 2026

Other

Listing Information
Days Active in MLS: 5
Continuous Days Active in MLS: 5

Listing Agent Information
List Agent First Name: JOHNNY
List Agent Last Name: ROJAS

Listing Office Information
List Office Name: RE/MAX TIME REALTY

Selling Agent Information
Buyer Agent First Name: ANGIE
Buyer Agent Last Name: TANG

Selling Office Information
Buyer Office Name: FIRST TEAM REAL ESTATE

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

1/10 Flood Factor

Minimal risk 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, 21 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

$939,000 – $1.14M

Reach more buyers when you sell with Redfin. Save up to $9,883 in fees. 3 minutes to get started.

Need the cash from your home fast? Sell to .

Nearby similar homes

3D WALKTHROUGH

$1,299,000

4 beds3 baths1,942 sq ft

2545 Castle Rock Rd, Diamond Bar, CA 91765

$6,980,000

6 beds6.5 baths11,000 sq ft

2855 Oak Knoll Dr, Diamond Bar, CA 91765

Country Queen Real Estate

OPEN SUN, 12PM TO 4PM3D & VIDEO TOUR

$3,980,000

8 beds8.5 baths8,264 sq ft

2820 Shadow Canyon Dr, Diamond Bar, CA 91765

$1,199,900

4 beds4 baths1,810 sq ft

21325 Hipass Dr, Diamond Bar, CA 91765

$6,500,000

11 beds12 baths17,241 sq ft

22588 Ridge Line Rd, Diamond Bar, CA 91765

ReMax 2000 Realty

$1,239,999

3 beds3 baths1,755 sq ft

20774 Timberline, Walnut, CA 91789

New listings for sale in 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 4PM3D & VIDEO TOUR

$1,595,000

5 beds3 baths3,203 sq ft

1112 Summitridge, Diamond Bar, CA 91765

Home values near 3731 Castle Rock Rd

Data from public records.

Address	Redfin Estimate
3631 Castle Rock Rd, Diamond Bar, CA 4 Beds \| - Baths \| 1724 Sq. Ft.	$940,515
3705 Castle Rock Rd, Diamond Bar, CA 4 Beds \| 2 Baths \| 1724 Sq. Ft.	$949,748

Address	Redfin Estimate
3637 Castle Rock Rd, Diamond Bar, CA 4 Beds \| 2 Baths \| 1724 Sq. Ft.	$875,279
3711 Castle Rock Rd, Diamond Bar, CA 3 Beds \| 2 Baths \| 1521 Sq. Ft.	$862,289

Address	Redfin Estimate
3645 Castle Rock Rd, Diamond Bar, CA 3 Beds \| 2 Baths \| 1448 Sq. Ft.	$875,703
3719 Castle Rock Rd, Diamond Bar, CA 4 Beds \| - Baths \| 2164 Sq. Ft.	$1,020,864

Property information provided by CRMLS when last listed in 2020. This data may not match . Learn more.

Download the Redfin App on the Apple App Store

Download the Redfin App from the Google Play Store

Join us

Become an Agent

Get referrals

Careers

Find homes faster

About us

Find us

Subsidiaries

Affiliated Business

Countries

United States

Canada

Updated September 2025: By searching, you agree to the Terms of Use, and Privacy Policy.

Do not sell or share my personal information.

REDFIN and all REDFIN variants, WALK SCORE, and the R logos, are trademarks of Redfin Corporation, registered or pending in the USPTO.

California DRE #01521930

Redfin is licensed to do business in New York as Redfin Real Estate. NY Standard Operating Procedures

New Mexico Real Estate Licenses

TREC: Info About Brokerage Services, Consumer Protection Notice

All mortgage lending products and information are provided by Rocket Mortgage, LLC | NMLS #3030; www.NMLSConsumerAccess.org. Licensed in 50 states. This site is not authorized by the New York State Department of Financial Services for mortgage solicitation or loan applications activities related to properties located in the State of New York.

Redfin Corporation is an affiliated business of Rocket Limited Partnership. Each company, and their subsidiaries, are separate legal entities operated and managed through its own management and governance structures.

If you are using a screen reader, or having trouble reading this website, please call Redfin Customer Support for help at 1-844-759-7732.

REDFIN IS COMMITTED TO AND ABIDES BY THE FAIR HOUSING ACT AND EQUAL OPPORTUNITY ACT. READ REDFIN'S FAIR HOUSING POLICY AND THE NEW YORK STATE FAIR HOUSING NOTICE.

GreatSchools Ratings provided by GreatSchools.org.

91709 homes for sale
91765 homes for sale
91789 homes for sale
91766 homes for sale
91768 homes for sale

Houses for rent in Diamond Bar	Agents near me	Irvine, CA homes for sale	Diamond Bar Housing Market
Houses for sale near me	San Diego, CA homes for sale	Fremont, CA homes for sale
Land for sale near me	San Francisco, CA homes for sale	Sacramento, CA homes for sale
Open Houses near me	Los Angeles, CA homes for sale	Diamond Bar Property Records
Condos for sale near me	San Jose, CA homes for sale	CA New Listings

Irvine homes for sale
Pasadena homes for sale
Long Beach homes for sale

About this home

Redfin Estimate

Earn from this home

Market trends in 91765, CA

Sale history for 3731 Castle Rock Rd

Tax history for 3731 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 3731 Castle Rock Rd

More real estate resources