2431 CASTLE ROCK Rd, Diamond Bar, OS 91765

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Off market mar 2009 for $510K

$1,096,306

Est. refi paymentEst. refi $3,525/mo

•

1,795

sq ft

2431 CASTLE ROCK Rd, Diamond Bar, OS 91765

About this home

Turnkey!! Standard Sale!!! No REO. No Short Sale. Great Area!! South DB, in Walnut Valley School District. Walking distance to Evergreen Elementary and Diamond Bar High School. This house has been nearly completely remodeled and upgraded in the past three years. 480 sq ft. Master Bedroom Addition in Oct of 2005. Master has a private flagstone patio, huge walk through closet with dressing area. New windows in 2008. Brand new remodeled kitchen with maple cabinets, granite countertops, and stainless appliances. Brand new top of the line Carpet throughout. Marble faced fireplace in formal living room. Many upgrades from paneled doors with brushed nickel hardware to 4' baseboards throughout. Flagstone front walkway and backyard patio. Garage has been converted to living space with insulation, recessed lights, and surround sound. This home sits on a large corner lot with sprinklers in the front and backyard, with an extra large recently repaved driveway. You won't be disappointed.

Single-familyProperty Type

1963Year Built

9,250 sq ftLot Size

$611Est. Price/Sq.Ft.

2 car garageParking

Listed by Laura Godwin •DRE #01838764 • Laura Godwin, Broker

Bought with Frank Tuan Nguyen •DRE #01091564 • Star Real Estate

Redfin checked: 3 minutes ago

•Source:CRMLS #P674573

Redfin Estimate

$1,096,306

$586K since sold in March 2009$1,000 since September

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 16.2% lower than the average sale price ($1.31M) of 6 comparable homes.

SOLD SEP 9, 2026
$1,234,520
A
4 beds2.5 baths1,823 sq ft
2115 Tierra Loma Dr, Diamond Bar, CA 91765
SOLD MAY 4, 2026
$1,290,000
B
4 beds2 baths1,788 sq ft
1869 Morning Cyn, Diamond Bar, CA 91765
SOLD FEB 6, 2026
$1,300,000
C
4 beds2 baths1,831 sq ft
2463 Harmony Hl, Diamond Bar, CA 91765
SOLD MAY 14, 2026
$1,330,000
D
4 beds3 baths2,037 sq ft
3357 Bent Twig, Diamond Bar, CA 91765
SOLD JUN 26, 2026
$1,346,000
E
4 beds3 baths2,221 sq ft
1628 Fox Glen Dr, Diamond Bar, CA 91765
SOLD JUL 10, 2026
$1,350,000
F
4 beds3 baths2,268 sq ft
1754 Leaning Pne, Diamond Bar, CA 91765

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Earn from this home

Sell

$807,830

Est. take-home

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Refinance

Est. cash available

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Rent

$3,680/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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OPEN SUN, 11AM TO 3PM
$1,363,000
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883 Terrace W, Pomona, CA 91765
$1,050,000
4 beds2 baths1,859 sq ft
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$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
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1112 Summitridge, Diamond Bar, CA 91765
OPEN SUN, 2PM TO 5PM
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RE/MAX Galaxy
See all

Provided by Redfin

Sale history for 2431 CASTLE ROCK Rd

Year

Property tax

Land + Additions

Assessment*

2025

$8,542 (+5.2%)

$363,914 + $292,829

$656,743

2024

$8,118 (+2.4%)

$363,914 + $292,829

$656,743

2023

$7,926 (+2.1%)

$356,779 + $287,088

$643,867

2022

$7,761 (+1.9%)

$349,784 + $281,459

$631,243

2021

$7,618 (+1.3%)

$342,926 + $275,941

$618,867

2020

$7,522 (+1.9%)

$336,202 + $270,531

$606,733

2019

$7,379 (+4.4%)

$332,755 + $267,758

$600,513

2018

$7,070 (+4.8%)

$326,231 + $262,508

$588,739

2017

$6,748 (+3.0%)

$313,564 + $252,315

$565,879

2016

$6,552 (−0.6%)

$313,564 + $252,315

$565,879

2015

$6,592 (−0.1%)

$307,416 + $247,368

$554,784

2014

$6,600 (+1.1%)

$296,868 + $238,881

$535,749

2012

$6,529 (+2.9%)

$295,527 + $237,802

$533,329

2011

$6,343 (+0.8%)

$289,733 + $233,140

$522,873

2010

$6,295 (+0.4%)

$284,052 + $228,569

$512,621

2009

$6,271 (+2.8%)

$281,930 + $226,861

$508,791

2008

$6,103

$331,223 + $185,119

$516,342

Tax history for 2431 CASTLE ROCK Rd

Year

Property tax

Land + Additions

Assessment*

2025

$8,542 (+5.2%)

$363,914 + $292,829

$656,743

2024

$8,118 (+2.4%)

$363,914 + $292,829

$656,743

2023

$7,926 (+2.1%)

$356,779 + $287,088

$643,867

2022

$7,761 (+1.9%)

$349,784 + $281,459

$631,243

2021

$7,618 (+1.3%)

$342,926 + $275,941

$618,867

2020

$7,522 (+1.9%)

$336,202 + $270,531

$606,733

2019

$7,379 (+4.4%)

$332,755 + $267,758

$600,513

2018

$7,070 (+4.8%)

$326,231 + $262,508

$588,739

2017

$6,748 (+3.0%)

$313,564 + $252,315

$565,879

2016

$6,552 (−0.6%)

$313,564 + $252,315

$565,879

2015

$6,592 (−0.1%)

$307,416 + $247,368

$554,784

2014

$6,600 (+1.1%)

$296,868 + $238,881

$535,749

2012

$6,529 (+2.9%)

$295,527 + $237,802

$533,329

2011

$6,343 (+0.8%)

$289,733 + $233,140

$522,873

2010

$6,295 (+0.4%)

$284,052 + $228,569

$512,621

2009

$6,271 (+2.8%)

$281,930 + $226,861

$508,791

2008

$6,103

$331,223 + $185,119

$516,342

*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

8,962 Sq. Ft.

Year renovated

1974

Sq. Ft.

1,795

Year built

1963

Style

Single Family Residential

County

Los Angeles County

APN

8285007017

Parking Spaces

—

Basement

—

Accessible

—

HOA Dues

—

Garage

—

Features

—

Last updated by owner on Aug 31, 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
Converted Garage, RV Access/Parking
Has Parking

Interior

Laundry Information
In Closet

Kitchen Information
Has Appliances

Bathroom Information
# of Baths (Full): 2
# of Baths (3/4): 1

Cooling Information
Central
Has Cooling

Room Information
Formal Entry, Foyer, Living Room, Walk-In Closet, Separate Family Room

Fireplace Information
Electric, Living Room, Wood
Has Fireplace

Flooring Information
Carpet, Tile

Heating Information
Central Furnace

Interior Features
French Doors, Sliding Glass Door(s)
Copper Plumbing Full, Recessed Lighting
Levels: One
Window Features: Blinds

Exterior

Exterior Information
Roof: Composition, Shingle
Fencing: Blockwall
Has Fence
Construction Materials: Flagstone, Stucco, Wood

Exterior Features
Patio And Porch Features: Stone
Has Patio
Pool Features: None
Has Sprinklers

Lot Information
Lot Size Source: Assessor's Data
Lot Size Dimensions: 84 x 110
Lot Features: Corner Lot, Sprinklers In Front, Sprinklers In Rear, Sprinklers On Side, Yard

Property Information
Common Walls: No Common Walls
Living Area Source: Assessor's Data
Parcel Number: 8285007017
Property Condition: Updated/Remodeled, Turnkey
Year Built Source: Assessor

Utilities

Utilities Information
Cable Available, Sewer Available

Location

School Information
High School District: Walnut Valley Unified

Location Information
Latitude: 33.98067000
Longitude: -117.83242200
Other Subdivision Name: Other
Directions: 57 exit Pathfinder (Heading North turn Right, Heading South turn Left), Right on Evergreen Springs, Left on Birch Hill, Forced right on Castle Rock.
Subdivision Name: Other (OTHR)

Public facts

Beds: 4
Baths: 3.0
Sq. Ft.: 1,795
Stories: —
Lot Size: 8,962 square feet
Style: Single Family Residential
Year Built: 1963
Year Renovated: 1974
County: Los Angeles County
APN: 8285007017

Home facts updated by county records on Aug 31, 2026

Other

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

Listing Agent Information
List Agent First Name: Laura
List Agent Last Name: Godwin

Listing Office Information
List Office Name: Laura Godwin, Broker

Selling Agent Information
Buyer Agent First Name: Frank Tuan
Buyer Agent Last Name: Nguyen

Selling Office Information
Buyer Office Name: Star Real Estate

Around this home

Schools

Evergreen Elementary School

Public K-5 • Assigned • 0.1mi

9/10

Chaparral Middle School

Public 6-8 • Assigned • 1.3mi

10/10

Diamond Bar High School

Public 9-12 • Assigned • 0.4mi

10/10

Provided by GreatSchools

Lifestyle

Provided by Walk Score and Local Logic

Climate risks

6/10 Flood Factor

Estimated 62-76% chance of a flood reaching the building in the next 30 years

5/10 Fire Factor

3% 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, OS • 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 9.7 hours in June and 6.9 hours in December, placing it above the U.S. average for solar exposure.

9.7 hrs

6.9 hrs

JuneDecember

Provided by Shadowmap

Estimated sale price

$1.04M – $1.26M

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Home values near 2431 CASTLE ROCK Rd

Data from public records.

Address	Redfin Estimate
2402 Castle Rock Rd, Diamond Bar, CA 5 Beds \| 4 Baths \| 2280 Sq. Ft.	$1,126,608
2420 Castle Rock Rd, Diamond Bar, CA 4 Beds \| 2 Baths \| 1315 Sq. Ft.	$917,522

Address	Redfin Estimate
2406 Castle Rock Rd, Diamond Bar, CA 4 Beds \| 2 Baths \| 1909 Sq. Ft.	$1,100,416
2428 Castle Rock Rd, Diamond Bar, CA 4 Beds \| 2 Baths \| 1288 Sq. Ft.	$857,544

Address	Redfin Estimate
2414 Castle Rock Rd, Diamond Bar, CA 4 Beds \| 3 Baths \| 2176 Sq. Ft.	$1,007,890
2434 Castle Rock Rd, Diamond Bar, CA 4 Beds \| 2 Baths \| 1315 Sq. Ft.	$916,023

Property information provided by CRMLS when last listed in 2009. 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 2431 CASTLE ROCK Rd

Tax history for 2431 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 2431 CASTLE ROCK Rd

More real estate resources