3417 CASTLE ROCK Rd, Diamond Bar, CA 91765

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Off market jun 2010 for $420K

$956,660

Est. refi paymentEst. refi $1,120/mo

•

2,035

sq ft

3417 CASTLE ROCK Rd, Diamond Bar, CA 91765

About this home

Single-familyProperty Type

1963Year Built

7,749 sq ftLot Size

$470Est. Price/Sq.Ft.

2 car garageParking

Listed by Marie Chung •DRE #01414087 • Modern Realty Co.

Bought with Carolyn Tu •DRE #01260032 • CNA Investment Corp.

Redfin checked: 2 minutes ago

•Source:CRMLS #P732029

Redfin Estimate

$956,660

$537K since sold in June 2010$23K since September

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 7.3% lower than the average sale price ($1.03M) 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 FEB 6, 2026
$1,300,000
F
4 beds2 baths1,831 sq ft
2463 Harmony Hl, Diamond Bar, CA 91765

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Earn from this home

Sell

$701,745

Est. take-home

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Est. cash available

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Rent

$3,395/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

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OPEN SUN, 3PM TO 5PM
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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
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OPEN SUN, 2PM TO 4PM
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23433 Quail Summit Dr, Diamond Bar, CA 91765
OPEN SUN, 1PM TO 4PM
$1,595,000
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1112 Summitridge, Diamond Bar, CA 91765
OPEN SUN, 2PM TO 5PM
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RE/MAX Galaxy
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Provided by Redfin

Sale history for 3417 CASTLE ROCK Rd

Date

Event

Price

CRMLS #H10128788

Feb 25, 2011

Listing Removed

—

Dec 14, 2010

Listed

$479,999

$236/sq ft

CRMLS #P732029

Jun 7, 2010

Sold

$420,000

$206/sq ft

May 21, 2010

Pending

—

May 4, 2010

Price Changed

$419,900

$206/sq ft

Apr 23, 2010

Listed

$429,900

$211/sq ft

CRMLS #P706964

Apr 19, 2010

Listing Removed

—

Feb 11, 2010

Price Changed

$429,900

$211/sq ft

Jan 15, 2010

Price Changed

$469,900

$231/sq ft

Dec 16, 2009

Price Changed

$499,900

$246/sq ft

Oct 13, 2009

Listed

$529,900

$260/sq ft

CRMLS #C09042558

Aug 14, 2009

Listing Removed

—

May 18, 2009

Contingent

—

Apr 14, 2009

Listed

$385,000

$189/sq ft

Public Records

Feb 9, 2005

Sold

$420,000

$206/sq ft

Public Records

Feb 28, 1994

Sold

$190,000

$93/sq ft

Public Records

Nov 1, 1989

Sold

$204,000

$100/sq ft

Public Records

Jul 28, 1988

Sold

$158,000

$78/sq ft

Year

Property tax

Land + Additions

Assessment*

2025

$7,237 (+5.4%)

$408,411 + $133,722

$542,133

2024

$6,868 (+2.4%)

$408,411 + $133,722

$542,133

2023

$6,709 (+2.1%)

$400,403 + $131,100

$531,503

2022

$6,570 (+1.9%)

$392,552 + $128,530

$521,082

2021

$6,446 (+1.3%)

$384,855 + $126,010

$510,865

2020

$6,366 (+1.9%)

$377,309 + $123,540

$500,849

2019

$6,247 (+5.2%)

$373,441 + $122,274

$495,715

2018

$5,935 (+4.7%)

$366,119 + $119,877

$485,996

2017

$5,668 (+3.1%)

$351,903 + $115,223

$467,126

2016

$5,496 (−0.6%)

$351,903 + $115,223

$467,126

2015

$5,529 (−0.1%)

$345,003 + $112,964

$457,967

2014

$5,536 (+1.1%)

$333,165 + $109,089

$442,254

2012

$5,475 (+2.9%)

$331,660 + $108,596

$440,256

2011

$5,318 (−26.1%)

$325,157 + $106,467

$431,624

2010

$7,195 (+29.3%)

$318,782 + $104,380

$423,162

2009

$5,564 (+2.8%)

$287,000 + $300,000

$587,000

2008

$5,414

$270,608 + $184,013

$454,621

Tax history for 3417 CASTLE ROCK Rd

Year

Property tax

Land + Additions

Assessment*

2025

$7,237 (+5.4%)

$408,411 + $133,722

$542,133

2024

$6,868 (+2.4%)

$408,411 + $133,722

$542,133

2023

$6,709 (+2.1%)

$400,403 + $131,100

$531,503

2022

$6,570 (+1.9%)

$392,552 + $128,530

$521,082

2021

$6,446 (+1.3%)

$384,855 + $126,010

$510,865

2020

$6,366 (+1.9%)

$377,309 + $123,540

$500,849

2019

$6,247 (+5.2%)

$373,441 + $122,274

$495,715

2018

$5,935 (+4.7%)

$366,119 + $119,877

$485,996

2017

$5,668 (+3.1%)

$351,903 + $115,223

$467,126

2016

$5,496 (−0.6%)

$351,903 + $115,223

$467,126

2015

$5,529 (−0.1%)

$345,003 + $112,964

$457,967

2014

$5,536 (+1.1%)

$333,165 + $109,089

$442,254

2012

$5,475 (+2.9%)

$331,660 + $108,596

$440,256

2011

$5,318 (−26.1%)

$325,157 + $106,467

$431,624

2010

$7,195 (+29.3%)

$318,782 + $104,380

$423,162

2009

$5,564 (+2.8%)

$287,000 + $300,000

$587,000

2008

$5,414

$270,608 + $184,013

$454,621

*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

7,804 Sq. Ft.

Year renovated

1963

Sq. Ft.

2,035

Year built

1963

Style

Single Family Residential

County

Los Angeles County

APN

8714015010

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
# of Garage Spaces: 2

Interior

Kitchen Information
Has Appliances
Formal Dining Room

Bathroom Information
# of Baths (Full): 2

Cooling Information
Wall Window
Has Cooling

Fireplace Information
Living Room, Masonry, See Remarks
Has Fireplace

Flooring Information
Laminated, Carpet, Vinyl

Heating Information
See Remarks
Has Heating

Interior Features
Levels: Two

Exterior

Exterior Information
Roof: Composition, Shingle
Construction Materials: Stucco

Exterior Features
Pool Features: None

Lot Information
Lot Size Source: Assessor's Data

Property Information
Common Walls: No Common Walls
Living Area Source: Assessor's Data
Parcel Number: 8714015010
Year Built Source: Assessor

Utilities

Utilities Information
Sewer Available
Water Source: District/Public

Location

School Information
High School District: Walnut Valley Unified

Location Information
Latitude: 33.96635500
Longitude: -117.84847000
Other Subdivision Name: OTHR
Directions: BREA CANYON RD / COPPER CANYON
Subdivision Name: Other (OTHR)

Public facts

Beds: 5
Baths: 2.0
Sq. Ft.: 2,035
Stories: —
Lot Size: 7,804 square feet
Style: Single Family Residential
Year Built: 1963
Year Renovated: 1963
County: Los Angeles County
APN: 8714015010

Home facts updated by county records on Aug 30, 2026

Other

Listing Information
Days Active in MLS: 29
Continuous Days Active in MLS: 29

Listing Agent Information
List Agent First Name: Marie
List Agent Last Name: Chung

Listing Office Information
List Office Name: Modern Realty Co.

Selling Agent Information
Buyer Agent First Name: Carolyn
Buyer Agent Last Name: Tu

Selling Office Information
Buyer Office Name: Carolyn Fu Tu Broker

Around this home

Schools

Castle Rock Elementary School

Public K-5 • Assigned • 0.5mi

10/10

South Pointe Middle School

Public 6-8 • Assigned • 1.7mi

10/10

Diamond Bar High School

Public 9-12 • Assigned • 1.1mi

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

5% chance of being in a wildfire in next 30 years

6/10 Heat Factor

7 days above 98° expected this year, 21 days in 30 years

1/10 Wind Factor

Minimal risk of severe winds over next 30 years

6/10 Air Factor

10 unhealthy days expected this year, 13 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

$909,000 – $1.10M

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Home values near 3417 CASTLE ROCK Rd

Data from public records.

Address	Redfin Estimate
3466 Castle Rock Road, Diamond Bar, CA 4 Beds \| 2 Baths \| 1700 Sq. Ft.	$969,875
3446 Castle Rock Road, Diamond Bar, CA 3 Beds \| 2 Baths \| 1848 Sq. Ft.	$941,321

Address	Redfin Estimate
3458 Castle Rock Road, Diamond Bar, CA 4 Beds \| 2 Baths \| 1521 Sq. Ft.	$914,554
3440 Castle Rock Road, Diamond Bar, CA 4 Beds \| 2 Baths \| 2098 Sq. Ft.	$1,079,098

Address	Redfin Estimate
3452 Castle Rock Road, Diamond Bar, CA 5 Beds \| 2 Baths \| 2048 Sq. Ft.	$1,031,022
3434 Castle Rock Road, Diamond Bar, CA 4 Beds \| 2 Baths \| 1961 Sq. Ft.	$1,096,778

Property information provided by CRMLS when last listed in 2010. 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 3417 CASTLE ROCK Rd

Tax history for 3417 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 3417 CASTLE ROCK Rd

More real estate resources