300 S Rock River Rd, Diamond Bar, CA 91765

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Off market aug 2016 for $525K

$868,952

Est. refi paymentEst. refi $3,501/mo

•

1,499

sq ft

300 S Rock River Rd, Diamond Bar, CA 91765

About this home

Stunning Renovation ~ New Windows ~ Master Suite ~ Ice-Cold A/C ~ Open Concept ~ Remarkable Neighborhood ~ This extraordinary Diamond Bar home has been exquisitely appointed and is ready for the most discerning and tasteful of Buyers. This property boasts dual-pane windows, hardwood laminate flooring, recessed lighting, and custom fixtures. The luxurious, open-concept kitchen is a chef/entertainer's dream with a gorgeous designer island, drop-down range hood with dazzling tile backsplash, white shaker cabinets, quartz counter-tops, large pantry/mud room, and stainless steel appliances. The kitchen and dining room integrate seamlessly into your large living space with a striking custom-lit fireplace that will leave your friends and family in awe. The phenomenal Master Suite contains an immaculate bathroom, large closet, and direct access to your spacious backyard. Nestled in a tranquil, pride-of-ownership, rapidly-appreciating Diamond Bar neighborhood, this trophy property is truly a rare offering. Go view and submit your offer today!

Single-familyProperty Type

1973Year Built

8,009 sq ftLot Size

$580Est. Price/Sq.Ft.

2 car garageParking

Listed by Max James-Armand •DRE #01912736 • Helix Properties, Inc

Bought with Andy Andres •DRE #01160368 • Paradise Realty

Redfin checked: 2 minutes ago

•Source:CRMLS #OC16132654

Redfin Estimate

$868,952

$344K since sold in August 2016$5,000 since October

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 1.8% higher than the average sale price ($853K) of 5 comparable homes.

SOLD JUN 9, 2026
$891,000
A
4 beds2 baths1,577 sq ft
353 S Rock River Rd, Diamond Bar, CA 91765
SOLD MAY 27, 2026
$900,000
B
3 beds2 baths1,553 sq ft
312 N Prospectors, Diamond Bar, CA 91765
SOLD SEP 2, 2026
$825,000
C
4 beds2 baths1,489 sq ft
105 N Palo Cedro, Diamond Bar, CA 91765
SOLD MAY 22, 2026
$895,000
D
3 beds2 baths1,554 sq ft
856 Golden Prados, Diamond Bar, CA 91765
SOLD OCT 8, 2026
$755,000
E
4 beds2 baths1,386 sq ft
22928 Beaverhead Dr, Diamond Bar, CA 91765

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Earn from this home

Sell

$492,787

Est. take-home

List your home with Redfin and save $4,345

Refinance

Est. cash available

Get cash now or lower your monthly rate

Rent

$3,203/mo

Redfin rental estimate

List your home for rent

Market trends in 91765, CA

Last updated October 2026

Buyer's Market

Seller's Market

Balanced market

Sale-to-list price

97.1%

0.7% MoM

Median sale price

$1.1M

$19K MoM

Avg. days on market

67d

6 days MoM

Recently sold homes

11 MoM

New listings for sale

OPEN SAT
$1,249,000
5 beds3 baths2,240 sq ft
233 N Platina, Diamond Bar, CA 91765
COMING SOON
$3,300,000
6 beds9 baths10,352 sq ft
2677 Wagon Train, Diamond Bar, CA 91765
$595,000
2 beds2 baths1,191 sq ft
1120 Cleghorn Unit C, Diamond Bar, CA 91765
LISTED BY REDFIN
$4,980,000
7 beds7.5 baths7,660 sq ft
2611 Steeplechase Ln, Diamond Bar, CA 91765
$1,079,000
4 beds3 baths2,126 sq ft
23548 Casa Loma, Diamond Bar, CA 91765
$430,000
2 beds2 baths788 sq ft
22761 Lakeway #414, Diamond Bar, CA 91765
$800,000
3 beds3 baths1,720 sq ft
2002 Silver Hawk #14, Diamond Bar, CA 91765
$438,000
2 beds2 baths934 sq ft
22820 Hilton Head #78, Diamond Bar, CA 91765
Golden Nest Realty Group
3D WALKTHROUGH
$1,150,000
5 beds3 baths2,204 sq ft
23917 Decorah, Diamond Bar, CA 91765
$990,000
3 beds3 baths1,972 sq ft
23266 Forest Cyn, Diamond Bar, CA 91765
See all

Provided by Redfin

Redfin agents who toured

Located in a great area of Diamond Bar, home features 3 bedrooms and 1.75 bath. Needs quite a bit of tender loving care, has wonderful potential. Backs up to Pomona 60 Freeway.
11 years ago• May not reflect the current state of the home
Shelly Quilliam
Redfin Associate agent

Sale history for 300 S Rock River Rd

Date

Event

Price

CRMLS #OC16132654

Aug 16, 2016

Sold

$525,000

$350/sq ft

Aug 15, 2016

Pending

—

Jul 27, 2016

Contingent

—

Jun 19, 2016

Listed

$529,000

$353/sq ft

Public Records

Jun 22, 2016

Sold

$430,000

$287/sq ft

CRMLS #SR15231298

Jun 22, 2016

Sold

$429,950

$287/sq ft

May 20, 2016

Pending

—

Apr 4, 2016

Contingent

—

Apr 1, 2016

Pending

—

Feb 27, 2016

Price Changed

$419,000

$280/sq ft

Jan 7, 2016

Price Changed

$445,000

$297/sq ft

Oct 22, 2015

Listed

$489,000

$326/sq ft

Come see this one story single family home in desirable Diamond Bar. It has three bedrooms and one and three quarter baths. Large living room - great for entertaining. House has great flow and a nice backyard. House does need some tender loving care but your individual vision can be realized here. Think of it as your opportunity to express yourself. Imagine what you can do. Close to local shops and restaurants.

Public Records

Jul 1, 1977

Sold

$58,000

$39/sq ft

Year

Property tax

Land + Additions

Assessment*

2025

$9,442 (+20.9%)

$497,191 + $196,491

$693,682

2024

$7,808 (+2.6%)

$487,443 + $121,858

$609,301

2023

$7,609 (+2.2%)

$477,886 + $119,469

$597,355

2022

$7,442 (+2.3%)

$468,516 + $117,127

$585,643

2021

$7,278 (+0.3%)

$459,330 + $114,831

$574,161

2020

$7,253 (−2.5%)

$450,324 + $112,580

$562,904

2019

$7,439 (+7.7%)

$445,707 + $111,426

$557,133

2018

$6,909 (+1.8%)

$436,968 + $109,242

$546,210

2017

$6,788 (+264.6%)

$420,000 + $105,000

$525,000

2016

$1,862 (+0.9%)

$420,000 + $105,000

$525,000

2015

$1,846 (+0.3%)

$29,837 + $96,878

$126,715

2014

$1,840 (+1.3%)

$28,814 + $93,554

$122,368

2012

$1,816 (+3.2%)

$28,684 + $93,132

$121,816

2011

$1,760 (+0.9%)

$28,122 + $91,306

$119,428

2010

$1,745 (+3.1%)

$27,571 + $89,516

$117,087

2009

$1,692 (+5.1%)

$27,365 + $88,847

$116,212

2008

$1,609

$27,431 + $89,059

$116,490

Tax history for 300 S Rock River Rd

Year

Property tax

Land + Additions

Assessment*

2025

$9,442 (+20.9%)

$497,191 + $196,491

$693,682

2024

$7,808 (+2.6%)

$487,443 + $121,858

$609,301

2023

$7,609 (+2.2%)

$477,886 + $119,469

$597,355

2022

$7,442 (+2.3%)

$468,516 + $117,127

$585,643

2021

$7,278 (+0.3%)

$459,330 + $114,831

$574,161

2020

$7,253 (−2.5%)

$450,324 + $112,580

$562,904

2019

$7,439 (+7.7%)

$445,707 + $111,426

$557,133

2018

$6,909 (+1.8%)

$436,968 + $109,242

$546,210

2017

$6,788 (+264.6%)

$420,000 + $105,000

$525,000

2016

$1,862 (+0.9%)

$420,000 + $105,000

$525,000

2015

$1,846 (+0.3%)

$29,837 + $96,878

$126,715

2014

$1,840 (+1.3%)

$28,814 + $93,554

$122,368

2012

$1,816 (+3.2%)

$28,684 + $93,132

$121,816

2011

$1,760 (+0.9%)

$28,122 + $91,306

$119,428

2010

$1,745 (+3.1%)

$27,571 + $89,516

$117,087

2009

$1,692 (+5.1%)

$27,365 + $88,847

$116,212

2008

$1,609

$27,431 + $89,059

$116,490

*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

8,011 Sq. Ft.

Year renovated

1975

Sq. Ft.

1,499

Year built

1973

Style

Single Family Residential

County

Los Angeles County

APN

8718034014

Parking Spaces

—

Basement

—

Accessible

—

HOA Dues

—

Garage

—

Features

—

Last updated by owner on Oct 7, 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
# of Parking Spaces: 2

Interior

Bathroom Information
# of Baths (Full): 2

Cooling Information
Central
Has Cooling

Room Information
Primary Suite

Fireplace Information
Living Room
Has Fireplace

Interior Features
Levels: One

Exterior

Exterior Features
Pool Features: None

Lot Information
Lot Size Source: Assessor's Data
Lot Features: Lot 6500-9999

Property Information
Total # of Units: 1
Common Walls: No Common Walls
Living Area Source: Assessor's Data
Parcel Number: 8718034014
Year Built Source: Assessor

Utilities

Utilities Information
Sewer Connected
Water Source: District/Public

Location

Multi-Unit Information
# of Units In Community: 1

Neighborhood Information
Community Features: Suburban

School Information
High School District: Pomona Unified

Location Information
Latitude: 34.01923900
Longitude: -117.81687500

Public facts

Beds: 3
Baths: 2.0
Sq. Ft.: 1,499
Stories: —
Lot Size: 8,011 square feet
Style: Single Family Residential
Year Built: 1973
Year Renovated: 1975
County: Los Angeles County
APN: 8718034014

Home facts updated by county records on Oct 7, 2026

Other

Listing Information
Days Active in MLS: 57
Continuous Days Active in MLS: 57

Listing Agent Information
List Agent First Name: Max
List Agent Last Name: Armand

Listing Office Information
List Office Name: Helix Properties, Inc

Selling Agent Information
Buyer Agent First Name: Andy
Buyer Agent Last Name: Andres

Selling Office Information
Buyer Office Name: Paradise Realty

Around this home

Schools

K - 12
Preschool & daycare

Armstrong Elementary School

Public K-6 • Assigned • 0.1mi

5/10

Lorbeer Middle School

Public 7-8 • Assigned • 0.5mi

5/10

Diamond Ranch High School

Public 9-12 • Assigned • 2.2mi

8/10

Provided by GreatSchools

Lifestyle

Provided by Walk Score and Local Logic

Local insights from Redfin agents

The Diamond Bar market is shifting, creating new opportunities for both buyers and sellers. Buyers have a bit more negotiating room, while well-priced, well-maintained homes can still attract strong interest. If you’re considering a move, I’d be...
2 weeks ago • Diamond Bar
Sang Ur
Redfin Premier agent
124 deals
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Climate risks

1/10 Flood Factor

Minimal risk of a flood reaching the building in the next 30 years

2/10 Fire Factor

0.00% chance of being in a wildfire in next 30 years

7/10 Heat Factor

7 days above 98° expected this year, 20 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 10.1 hours in June and 6.8 hours in December, placing it above the U.S. average for solar exposure.

10.1 hrs

6.8 hrs

JuneDecember

Provided by Shadowmap

Estimated sale price

$826,000 – $1.00M

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Nearby similar homes

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Golden Nest Realty Group

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Home values near 300 S Rock River Rd

Data from public records.

Address	Redfin Estimate
341 S Rock River Road, Diamond Bar, CA 3 Beds \| 2 Baths \| 1384 Sq. Ft.	$829,182
323 S Rock River Road, Diamond Bar, CA 4 Beds \| 2 Baths \| 1577 Sq. Ft.	$868,562
279 S Rock River Road, Diamond Bar, CA 4 Beds \| 2 Baths \| 1465 Sq. Ft.	$844,615
293 S Rock River Road, Diamond Bar, CA 3 Beds \| 2 Baths \| 1322 Sq. Ft.	$864,424
284 S Rock River Road, Diamond Bar, CA 4 Beds \| 2 Baths \| 1927 Sq. Ft.	$890,914
292 S Rock River Road, Diamond Bar, CA 4 Beds \| 2 Baths \| 1280 Sq. Ft.	$820,750
318 S Rock River Road, Diamond Bar, CA 3 Beds \| 2 Baths \| 1577 Sq. Ft.	$911,313

Address	Redfin Estimate
335 S Rock River Road, Diamond Bar, CA 4 Beds \| 2 Baths \| 1680 Sq. Ft.	$908,976
317 S Rock River Road, Diamond Bar, CA 3 Beds \| 2 Baths \| 1369 Sq. Ft.	$889,823
273 S Rock River Road, Diamond Bar, CA 5 Beds \| 2 Baths \| 1848 Sq. Ft.	$911,011
270 S Rock River Road, Diamond Bar, CA 4 Beds \| 2 Baths \| 1465 Sq. Ft.	$834,398
308 S Rock River Road, Diamond Bar, CA 4 Beds \| 2 Baths \| 1577 Sq. Ft.	$833,810
288 S Rock River Road, Diamond Bar, CA 3 Beds \| 2 Baths \| 1322 Sq. Ft.	$898,133
324 S Rock River Road, Diamond Bar, CA 3 Beds \| 2 Baths \| 2065 Sq. Ft.	$941,995

Address	Redfin Estimate
329 S Rock River Road, Diamond Bar, CA 4 Beds \| 2 Baths \| 1476 Sq. Ft.	$848,248
285 S Rock River Road, Diamond Bar, CA 5 Beds \| 2 Baths \| 1848 Sq. Ft.	$921,300
289 S Rock River Road, Diamond Bar, CA 4 Beds \| 2 Baths \| 1577 Sq. Ft.	$863,849
278 S Rock River Road, Diamond Bar, CA 4 Beds \| 2 Baths \| 1465 Sq. Ft.	$925,463
296 S Rock River Road, Diamond Bar, CA 4 Beds \| - Baths \| 1577 Sq. Ft.	$868,819
312 S Rock River Road, Diamond Bar, CA 3 Beds \| - Baths \| 1369 Sq. Ft.	$863,136
330 S Rock River Road, Diamond Bar, CA 3 Beds \| 2 Baths \| 1840 Sq. Ft.	$967,613

Property information provided by CRMLS when last listed in 2016. 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

Redfin agents who toured

Sale history for 300 S Rock River Rd

Tax history for 300 S Rock River Rd

Public record

Property details

Around this home

Schools

Lifestyle

Local insights from Redfin agents

Climate risks

Historical weather

Sun exposure

Nearby similar homes

New listings for sale in 91765

Home values near 300 S Rock River Rd

More real estate resources