3842 Castle Rock Rd, Diamond Bar, CA 91765

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Off market feb 2016 for $630K

$1,066,122

Est. refi paymentEst. refi $4,350/mo

•

2,504

sq ft

3842 Castle Rock Rd, Diamond Bar, CA 91765

About this home

WOW!!! ABSOLUTELY THE BEST PRICED HOME IN SOUTH DIAMOND BAR per square foot - FOR A QUICK SALE!!!! Excellent South Diamond Bar Residence in the OUSTANDING WALNUT SCHOOL DISTRICT!! Spacious home offering 4-bedrooms, 2-baths, 2,504 square feet of living space. Large dining room for all of your family meals. Upgraded kitchen with breakfast nook, granite counter tops, stainless steel sink, hardwood flooring throughout (both levels), huge master bedroom with private balcony overlooking the hills. Quiet location at the end of the CUL-DE-SAC, added privacy without any homes directly behind you. RV parking, 2-car garage with direct access to the home. Easy access to nearby freeways. This is a "Must See" if you're looking to live in the highly desirable community of South Diamond Bar.

Single-familyProperty Type

1963Year Built

8,168 sq ftLot Size

$426Est. Price/Sq.Ft.

2 car garageParking

Listed by Kim Yung •DRE #01792914 • Coldwell Banker Tri-Counties R

Bought with Leonel Alcazar •DRE #01845518 • PMI NUHOME

Redfin checked: 3 minutes ago

•Source:CRMLS #TR15245665

Redfin Estimate

$1,066,122

$436K since sold in February 2016$9,000 since September

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 13% lower than the average sale price ($1.23M) of 4 comparable homes.

SOLD SEP 28, 2026
$1,435,000
A
4 beds2 baths2,455 sq ft
2016 Peaceful Hills Rd, Walnut, CA 91789
SOLD FEB 27, 2026
$1,030,000
B
4 beds2 baths1,756 sq ft
2710 Castle Rock Rd, Diamond Bar, CA 91765
SOLD APR 17, 2026
$1,488,000
C
4 beds3 baths2,426 sq ft
20573 Missionary Ridge St, Walnut, CA 91789
SOLD OCT 31, 2025
$948,880
D
4 beds2 baths1,662 sq ft
3702 Crooked Creek Dr, Diamond Bar, CA 91765

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Earn from this home

Sell

$619,280

Est. take-home

List your home with Redfin and save $5,331

Refinance

Est. cash available

Get cash now or lower your monthly rate

Rent

$3,684/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

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 3842 Castle Rock Rd

Year

Property tax

Land + Additions

Assessment*

2025

$9,872 (+6.0%)

$530,457 + $221,278

$751,735

2024

$9,309 (+4.3%)

$530,457 + $221,278

$751,735

2023

$8,925 (+2.1%)

$520,056 + $216,940

$736,996

2022

$8,739 (+1.9%)

$509,859 + $206,967

$716,826

2021

$8,574 (+1.3%)

$499,862 + $202,909

$702,771

2020

$8,465 (+1.9%)

$490,061 + $198,931

$688,992

2019

$8,304 (+3.9%)

$485,037 + $196,892

$681,929

2018

$7,992 (+4.8%)

$475,527 + $193,032

$668,559

2017

$7,627 (+93.8%)

$457,062 + $185,538

$642,600

2016

$3,935 (−0.5%)

$457,062 + $185,538

$642,600

2015

$3,955 (−0.2%)

$174,258 + $146,058

$320,316

2014

$3,962 (+1.3%)

$168,279 + $141,047

$309,326

2012

$3,912 (+3.0%)

$167,519 + $140,410

$307,929

2011

$3,798 (+0.8%)

$164,235 + $137,657

$301,892

2010

$3,767 (+0.6%)

$161,015 + $134,958

$295,973

2009

$3,746 (+2.9%)

$159,812 + $133,950

$293,762

2008

$3,641

$160,192 + $134,269

$294,461

Tax history for 3842 Castle Rock Rd

Year

Property tax

Land + Additions

Assessment*

2025

$9,872 (+6.0%)

$530,457 + $221,278

$751,735

2024

$9,309 (+4.3%)

$530,457 + $221,278

$751,735

2023

$8,925 (+2.1%)

$520,056 + $216,940

$736,996

2022

$8,739 (+1.9%)

$509,859 + $206,967

$716,826

2021

$8,574 (+1.3%)

$499,862 + $202,909

$702,771

2020

$8,465 (+1.9%)

$490,061 + $198,931

$688,992

2019

$8,304 (+3.9%)

$485,037 + $196,892

$681,929

2018

$7,992 (+4.8%)

$475,527 + $193,032

$668,559

2017

$7,627 (+93.8%)

$457,062 + $185,538

$642,600

2016

$3,935 (−0.5%)

$457,062 + $185,538

$642,600

2015

$3,955 (−0.2%)

$174,258 + $146,058

$320,316

2014

$3,962 (+1.3%)

$168,279 + $141,047

$309,326

2012

$3,912 (+3.0%)

$167,519 + $140,410

$307,929

2011

$3,798 (+0.8%)

$164,235 + $137,657

$301,892

2010

$3,767 (+0.6%)

$161,015 + $134,958

$295,973

2009

$3,746 (+2.9%)

$159,812 + $133,950

$293,762

2008

$3,641

$160,192 + $134,269

$294,461

*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

8,168 Sq. Ft.

Year renovated

1964

Sq. Ft.

2,504

Year built

1963

Style

Single Family Residential

County

Los Angeles County

APN

8714017001

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
RV Access/Parking, Garage - Two Door
Has Parking
# of Parking Spaces: 2

Interior

Laundry Information
Has Laundry
In Garage

Kitchen Information
Appliances: Garbage Disposal, Gas Oven, Gas Cooktop
Has Appliances
Formal Dining Room, In Kitchen

Bathroom Information
# of Baths (Full): 2

Cooling Information
Central
Has Cooling

Room Information
All Bedrooms Up, Family Room, Living Room, Primary Bedroom

Fireplace Information
Living Room
Has Fireplace

Flooring Information
Carpet, Wood

Heating Information
Central Furnace, Natural Gas
Has Heating

Interior Features
Entry Level: 1
Block Walls, Granite Counters
Levels: Two
Security Features: Carbon Monoxide Detector(s), Smoke Detector

Exterior

Exterior Information
Construction Materials: Stucco

Foundation Information
Foundation Details: Concrete Slab

Exterior Features
Pool Features: None

Lot Information
Lot Size Source: Assessor's Data
Lot Features: Cul-De-Sac, Front Yard, Lawn

Property Information
Total # of Units: 1
Common Walls: No Common Walls
Living Area Source: Assessor's Data
Parcel Number: 8714017001
Total # of Stories: 2
Has View
Year Built Source: Assessor

Utilities

Utilities Information
Electric: Electricity - On Property
Natural Gas Available, Sewer Available, Water Connected
Water Source: District/Public

Location

Multi-Unit Information
# of Units In Community: 1

Neighborhood Information
Community Features: Sidewalks, Street Lighting, Suburban

School Information
High School District: Walnut Valley Unified

Location Information
Latitude: 33.96088400
Longitude: -117.85277600

Public facts

Beds: 4
Baths: 2.0
Sq. Ft.: 2,504
Stories: —
Lot Size: 8,168 square feet
Style: Single Family Residential
Year Built: 1963
Year Renovated: 1964
County: Los Angeles County
APN: 8714017001

Home facts updated by county records on Aug 30, 2026

Other

Listing Information
Days Active in MLS: 76
Continuous Days Active in MLS: 76

Listing Agent Information
List Agent First Name: Kim
List Agent Last Name: Yung

Listing Office Information
List Office Name: Coldwell Banker Tri-Counties R

Selling Agent Information
Buyer Agent First Name: LEONEL
Buyer Agent Last Name: ALCAZAR

Selling Office Information
Buyer Office Name: NUHOME REALTY

Around this home

Schools

Castle Rock Elementary School

Public K-5 • Assigned • 0.9mi

10/10

South Pointe Middle School

Public 6-8 • Assigned • 2.1mi

10/10

Diamond Bar High School

Public 9-12 • Assigned • 1.6mi

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

6/10 Fire Factor

8% 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

$1.01M – $1.23M

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Home values near 3842 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 2015. 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 3842 Castle Rock Rd

Tax history for 3842 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 3842 Castle Rock Rd

More real estate resources