3702 Castle Rock Rd, Diamond Bar, CA 91765

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Off market sep 2021 for $660K

$904,765

Est. refi paymentEst. refi $4,995/mo

•

1,521

sq ft

3702 Castle Rock Rd, Diamond Bar, CA 91765

About this home

Unbelievable opportunity and currently the lowest priced single family home available in all of Diamond Bar! Great location with easy access to the 57 & 60 freeway and award winning schools. Single story living that can easily be made into open concept and right around the corner from the newly built Diamond Canyon Park with outdoor gym equipment, dog trails and incredible children’s play area. The yard is your canvas with an abundance of space and privacy to create your playground. Put all the years of watching HGTV to use with every opportunity to make this your dream home!

Single-familyProperty Type

1963Year Built

7,386 sq ftLot Size

$595Est. Price/Sq.Ft.

2 car garageParking

Listed by Carole Geronsin •DRE #00604118 • BHHS CA Properties

Listed by George Geronsin •DRE #01435284 • BHHS CA Properties

Contact: 714-602-3557

Bought with Carole Geronsin •DRE #00604118 • BHHS CA Properties

Bought with George Geronsin •DRE #01435284 • BHHS CA Properties

Redfin checked: a minute ago

•Source:CRMLS #PW21173537

Redfin Estimate

$904,765

$245K since sold in September 2021$30K since September

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 5.4% lower than the average sale price ($956K) of 6 comparable homes.

SOLD SEP 17, 2026
$930,000
A
3 beds2 baths1,300 sq ft
2726 Castle Rock, Diamond Bar, CA 91765
SOLD JUL 31, 2026
$975,000
B
3 beds2 baths1,300 sq ft
2606 Castle Rock Rd, Diamond Bar, CA 91765
Synergy Real Estate
SOLD JUL 31, 2026
$875,000
C
3 beds2 baths1,300 sq ft
21245 Cold Spg, Diamond Bar, CA 91765
SOLD FEB 27, 2026
$1,030,000
D
4 beds2 baths1,756 sq ft
2710 Castle Rock Rd, Diamond Bar, CA 91765
SOLD OCT 31, 2025
$948,880
E
4 beds2 baths1,662 sq ft
3702 Crooked Creek Dr, Diamond Bar, CA 91765
SOLD JAN 21, 2026
$980,000
F
4 beds2 baths1,288 sq ft
2819 Castle Rock, Diamond Bar, CA 91765

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Earn from this home

Sell

$377,660

Est. take-home

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Refinance

Est. cash available

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Rent

$3,128/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 3702 Castle Rock Rd

Year

Property tax

Land + Additions

Assessment*

2025

$9,132 (+5.4%)

$560,317 + $140,078

$700,395

2024

$8,666 (+3.6%)

$560,317 + $140,078

$700,395

2023

$8,362 (+2.1%)

$549,331 + $137,332

$686,663

2022

$8,188 (+464.8%)

$538,560 + $134,640

$673,200

2021

$1,450 (+1.2%)

$528,000 + $132,000

$660,000

2020

$1,433 (+1.7%)

$23,072 + $58,185

$81,257

2019

$1,409 (+8.3%)

$22,836 + $57,589

$80,425

2018

$1,300 (+3.9%)

$22,389 + $56,460

$78,849

2017

$1,251 (+4.1%)

$21,520 + $54,268

$75,788

2016

$1,202

$21,520 + $54,268

$75,788

2015

$1,203 (−0.6%)

$21,099 + $53,204

$74,303

2014

$1,210 (+2.2%)

$20,376 + $51,379

$71,755

2012

$1,184 (+3.0%)

$20,284 + $51,147

$71,431

2011

$1,149 (+1.2%)

$19,887 + $50,145

$70,032

2010

$1,135 (+1.8%)

$19,498 + $49,162

$68,660

2009

$1,114 (+3.8%)

$19,353 + $48,795

$68,148

2008

$1,074

$19,399 + $48,911

$68,310

Tax history for 3702 Castle Rock Rd

Year

Property tax

Land + Additions

Assessment*

2025

$9,132 (+5.4%)

$560,317 + $140,078

$700,395

2024

$8,666 (+3.6%)

$560,317 + $140,078

$700,395

2023

$8,362 (+2.1%)

$549,331 + $137,332

$686,663

2022

$8,188 (+464.8%)

$538,560 + $134,640

$673,200

2021

$1,450 (+1.2%)

$528,000 + $132,000

$660,000

2020

$1,433 (+1.7%)

$23,072 + $58,185

$81,257

2019

$1,409 (+8.3%)

$22,836 + $57,589

$80,425

2018

$1,300 (+3.9%)

$22,389 + $56,460

$78,849

2017

$1,251 (+4.1%)

$21,520 + $54,268

$75,788

2016

$1,202

$21,520 + $54,268

$75,788

2015

$1,203 (−0.6%)

$21,099 + $53,204

$74,303

2014

$1,210 (+2.2%)

$20,376 + $51,379

$71,755

2012

$1,184 (+3.0%)

$20,284 + $51,147

$71,431

2011

$1,149 (+1.2%)

$19,887 + $50,145

$70,032

2010

$1,135 (+1.8%)

$19,498 + $49,162

$68,660

2009

$1,114 (+3.8%)

$19,353 + $48,795

$68,148

2008

$1,074

$19,399 + $48,911

$68,310

*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

7,388 Sq. Ft.

Year renovated

1963

Sq. Ft.

1,521

Year built

1963

Style

Single Family Residential

County

Los Angeles County

APN

8714018002

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

Room Information
All Bedrooms Down, Kitchen, Living Room, Main Floor Bedroom, Main Floor Primary Bedroom, Primary Bathroom, Primary Bedroom

Fireplace Information
Living Room
Has Fireplace

Heating Information
Central Furnace
Has Heating

Interior Features
Levels: One
Main Level Bathrooms: 2
Main Level Bedrooms: 3

Exterior

Exterior Information
Structure Type: House

Exterior Features
Pool Features: None

Lot Information
Elevation Units: Feet
Lot Size Source: Assessor's Data
Lot Features: Level with Street, Lot-Level/Flat, Yard

Property Information
Total # of Units: 1
Common Walls: No Common Walls
Living Area Source: Assessor's Data
Parcel Number: 8714018002
Year Built Source: Assessor

Utilities

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

Location

Neighborhood Information
Community Features: Biking, Curbs, Park

School Information
Elementary School: Castlerock
Middle Or Junior School: South Pointe
High School: Diamond Bar
High School District: Walnut Valley Unified
Elementary School 2: CASTLE2
Middle Or Junior School 2: SOUPOI
High School 2: DIABAR

Location Information
Latitude: 33.96292700
Longitude: -117.85099300
Directions: 57FWY & Diamond Bar BLVD
Zoning: LCR17500*

Public facts

Beds: 3
Baths: 2.0
Sq. Ft.: 1,521
Stories: —
Lot Size: 7,388 square feet
Style: Single Family Residential
Year Built: 1963
Year Renovated: 1963
County: Los Angeles County
APN: 8714018002

Home facts updated by county records on Aug 30, 2026

Other

Listing Information
IDX Contact Info: 714-602-3557
Days Active in MLS: 13
Continuous Days Active in MLS: 13

Listing Agent Information
List Agent First Name: Carole
List Agent Last Name: Geronsin
Co-List Agent First Name: George
Co-List Agent Last Name: Geronsin

Listing Office Information
List Office Name: BHHS CA Properties
Co-List Office Name: BHHS CA Properties

Selling Agent Information
Buyer Agent First Name: Carole
Buyer Agent Last Name: Geronsin
Co-Buyer Agent First Name: George
Co-Buyer Agent Last Name: Geronsin

Selling Office Information
Buyer Office Name: BHHS CA Properties
Co-Buyer Office Name: BHHS CA Properties

Around this home

Schools

Castle Rock Elementary School

Public K-5 • Assigned • 0.7mi

10/10

South Pointe Middle School

Public 6-8 • Assigned • 2.0mi

10/10

Diamond Bar High School

Public 9-12 • Assigned • 1.4mi

10/10

Provided by GreatSchools

Lifestyle

Provided by Walk Score and Local Logic

Climate risks

6/10 Flood Factor

Estimated 59-72% 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, 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

$860,000 – $1.04M

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Home values near 3702 Castle Rock Rd

Data from public records.

Address	Redfin Estimate
3619 Castle Rock Rd, Diamond Bar, CA 3 Beds \| 2 Baths \| 1763 Sq. Ft.	$925,143
3637 Castle Rock Rd, Diamond Bar, CA 4 Beds \| 2 Baths \| 1724 Sq. Ft.	$875,279

Address	Redfin Estimate
3625 Castle Rock Rd, Diamond Bar, CA 3 Beds \| - Baths \| 1488 Sq. Ft.	$912,656
3645 Castle Rock Rd, Diamond Bar, CA 3 Beds \| 2 Baths \| 1448 Sq. Ft.	$875,703

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

Property information provided by CRMLS when last listed in 2021. 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 3702 Castle Rock Rd

Tax history for 3702 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 3702 Castle Rock Rd

More real estate resources