21454 S Cold Spring Ln, Diamond Bar, CA 91765

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Off Market May 2021 for $1.1M

$1,545,106

Est. refi paymentEst. refi $6,619/mo

•

2,712

sq ft

21454 S Cold Spring Ln, Diamond Bar, CA 91765

About this home

view! view! view! The best view of Diamond Bar, Big Lot 24184 SF can park RV! ! ! This bright, airy, open and gorgeous 3-story house with breathtaking panoramic views is located on the hill of the diamond bar. Owner speeded Electric meter upgrade , Tesla charging pile costs $5000,The award-winning "Walnut Valley School District". The front yard has a beautifully curved small garden, the back garden has beautiful trees, a bedroom, and a complete one bedroom and bathroom downstairs. High ceilings, marble tiles and wood floors lead to a modern kitchen with granite countertops, modern cabinets, walk-in kitchens and more. Recessed lighting in the kitchen and family room. Ample double-pane glass introduces soothing sunlight into the house. Three garages, very well maintained , furniture can be discussed and checked in with bags , The unforgettable scenery changes with the seasons. In winter, as long as you can see the scenery, you can reach the snow-capped mountains. A custom-made wrought iron staircase leads to the master bedroom and two other rooms upstairs, close to the school, within walking distance to H-Mark and the magnificent Mountain View, shopping and easy access to fwys 57, 60, 10, which is A gem is also a must see. Don't miss this rare opportunity to live in the southernmost place near Diamond Bar.

Single-familyProperty Type

1977Year Built

0.56 acresLot Size

$570Est. Price/Sq.Ft.

3 car garageParking

Listed by Rongrong Jin •DRE #02065113 • Pinnacle Real Estate Group

Bought with Nhu White •DRE #02100195 • Frontier Realty Inc

Redfin checked: 2 minutes ago

•Source:CRMLS #TR21024392

Redfin Estimate

$1,545,106

$410K since sold in May 2021$15K since August

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 1.5% higher than the average sale price ($1.52M) of 6 comparable homes.

SOLD MAY 28, 2026
$1,505,000
A
4 beds3 baths2,712 sq ft
3249 Hawkwood Rd, Diamond Bar, CA 91765
SOLD AUG 21, 2026
$1,680,000
B
5 beds3 baths3,006 sq ft
21642 High Bluff Rd, Diamond Bar, CA 91765
Century 21 Masters
SOLD MAY 12, 2026
$1,680,000
C
4 beds3 baths2,697 sq ft
21535 Chirping Sparrow, Diamond Bar, CA 91765
SOLD JUL 17, 2026
$1,589,000
D
4 beds2.5 baths2,805 sq ft
21040 Ambushers, Diamond Bar, CA 91765
New Star Realty & Inv.
SOLD JUN 29, 2026
$1,350,000
E
4 beds3 baths2,334 sq ft
1715 Oxbow Ct, Diamond Bar, CA 91765
SOLD MAY 14, 2026
$1,330,000
F
4 beds3 baths2,037 sq ft
3357 Bent Twig, Diamond Bar, CA 91765

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Earn from this home

Sell

$645,327

Est. take-home

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Refinance

Est. cash available

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Rent

$4,012/mo

Redfin rental estimate

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Market trends in 91765, CA

Last updated August 2026

Buyer's Market

Seller's Market

Seller's market

Sale-to-List Price

99.1%

0.2% MoM

Median sale price

$1.1M

$48K MoM

Avg. days on market

42d

0 days MoM

Recently sold homes

108

17 MoM

New listings for sale

COMING SOON
$585,000
2 beds2.5 baths1,012 sq ft
1109 Golden Springs Dr Unit D, Diamond Bar, CA 91765
$1,648,000
4 beds3 baths3,212 sq ft
3315 Hawkwood, Diamond Bar, CA 91765
First Team Real Estate
$5,380,000
6 beds7 baths9,038 sq ft
2828 Water Course Dr, Diamond Bar, CA 91765
$1,199,999
4 beds2.5 baths1,915 sq ft
23308 Quail Smt, Diamond Bar, CA 91765
$818,800
3 beds3 baths1,570 sq ft
22935 Estoril Dr #6, Diamond Bar, CA 91765
3D WALKTHROUGH
$1,690,000
4 beds3 baths2,587 sq ft
1515 Sunbluff Dr, Diamond Bar, CA 91765
$538,000
3 beds2 baths1,047 sq ft
800 Grand Ave Unit D1, Diamond Bar, CA 91765
$1,070,000
4 beds2.5 baths1,893 sq ft
24126 Silver Spray, Diamond Bar, CA 91765
3D WALKTHROUGH
$1,150,000
4 beds3 baths1,747 sq ft
1036 Cogburn Ln, Diamond Bar, CA 91765
$625,000
3 beds2.5 baths1,420 sq ft
1030 Golden Springs Dr Unit B, Diamond Bar, CA 91765
See all

Provided by Redfin

Sale history for 21454 S Cold Spring Ln

Date

Event

Price

CRMLS #TR21024392

May 20, 2021

Sold

$1,135,000

$419/sq ft

May 16, 2021

Pending

—

Apr 30, 2021

Contingent

—

Apr 16, 2021

Price Changed

$1,190,000

$439/sq ft

Mar 11, 2021

Relisted

—

Feb 14, 2021

Price Changed

$1,250,000

$461/sq ft

Feb 8, 2021

Listed

$1,290,000

$476/sq ft

Feb 5, 2021

Coming Soon

$1,290,000

$476/sq ft

CRMLS #TR15079408

Jul 2, 2015

Sold

$899,000

$331/sq ft

May 18, 2015

Pending

—

Apr 15, 2015

Listed

$899,000

$331/sq ft

A marvelous home located on the hills of Diamond Bar! This gorgeous resort-like home brings you back to your dream palace. It offers 4 bedrooms and 2.5 bathrooms, while a full bathroom is generously gifted in the master bedroom. It also features a huge and newly upgraded kitchen with beautiful cabinets. The home features an open floor plan and amazing architecture that accentuates its gorgeous upgrades such as the flooring, recessed lighting, paint, and windows! The spacious and whimsical backyard offers a 180 degree city view. Not to mention that all of the lot size is fully usable with well-maintained garden and room to grow your favorite fruit trees. You cannot miss this turn-key property located in the prestigious Walnut Valley School District. Schedule an appointment to see your dream home today!

CRMLS #TR15032441

Apr 15, 2015

Listing Removed

—

Feb 14, 2015

Listed

$959,000

$354/sq ft

CRMLS #TR14200208

Oct 17, 2014

Listing Removed

—

Sep 17, 2014

Listed

$978,000

$361/sq ft

Year

Property tax

Land + Additions

Assessment*

2025

$15,486 (+4.6%)

$746,768 + $481,789

$1,228,557

2024

$14,803 (+2.8%)

$746,768 + $481,789

$1,228,557

2023

$14,399 (+2.5%)

$732,126 + $472,343

$1,204,469

2022

$14,054 (+15.8%)

$717,771 + $463,082

$1,180,853

2021

$12,131 (+1.3%)

$703,698 + $454,002

$1,157,700

2020

$11,978 (+1.9%)

$623,048 + $360,136

$983,184

2019

$11,750 (+4.7%)

$616,660 + $356,444

$973,104

2018

$11,225 (+4.8%)

$604,569 + $349,455

$954,024

2017

$10,709 (+3.0%)

$581,094 + $335,886

$916,980

2016

$10,397 (+129.4%)

$581,094 + $335,886

$916,980

2015

$4,532 (−0.3%)

$569,700 + $329,300

$899,000

2014

$4,546 (+1.2%)

$67,588 + $287,316

$354,904

2012

$4,492 (+3.0%)

$67,283 + $286,018

$353,301

2011

$4,362 (+0.8%)

$65,964 + $280,410

$346,374

2010

$4,328 (+0.5%)

$64,671 + $274,912

$339,583

2009

$4,307 (+2.8%)

$64,188 + $272,858

$337,046

2008

$4,189

$64,341 + $273,507

$337,848

Tax history for 21454 S Cold Spring Ln

Year

Property tax

Land + Additions

Assessment*

2025

$15,486 (+4.6%)

$746,768 + $481,789

$1,228,557

2024

$14,803 (+2.8%)

$746,768 + $481,789

$1,228,557

2023

$14,399 (+2.5%)

$732,126 + $472,343

$1,204,469

2022

$14,054 (+15.8%)

$717,771 + $463,082

$1,180,853

2021

$12,131 (+1.3%)

$703,698 + $454,002

$1,157,700

2020

$11,978 (+1.9%)

$623,048 + $360,136

$983,184

2019

$11,750 (+4.7%)

$616,660 + $356,444

$973,104

2018

$11,225 (+4.8%)

$604,569 + $349,455

$954,024

2017

$10,709 (+3.0%)

$581,094 + $335,886

$916,980

2016

$10,397 (+129.4%)

$581,094 + $335,886

$916,980

2015

$4,532 (−0.3%)

$569,700 + $329,300

$899,000

2014

$4,546 (+1.2%)

$67,588 + $287,316

$354,904

2012

$4,492 (+3.0%)

$67,283 + $286,018

$353,301

2011

$4,362 (+0.8%)

$65,964 + $280,410

$346,374

2010

$4,328 (+0.5%)

$64,671 + $274,912

$339,583

2009

$4,307 (+2.8%)

$64,188 + $272,858

$337,046

2008

$4,189

$64,341 + $273,507

$337,848

*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
Permits

Beds

Baths

Stories

—

Lot width

—

Lot depth

—

Lot size

0.56 Acres

Year renovated

1977

Sq. Ft.

2,712

Year built

1977

Style

Single Family Residential

County

Los Angeles County

APN

8714001013

Parking Spaces

—

Basement

—

Accessible

—

HOA Dues

—

Garage

—

Features

—

Last updated by owner on Aug 30, 2026.

Low Density Residential District

The RL zoning district is intended primarily for parcels developed with existing detached single-family dwellings. The maximum allowed density for new residential subdivisions within this zoning district will be three dwellings per gross acre. The RL zoning district is consistent with the low density residential land use category of the general plan.

Permitted uses

Include but are not limited to:

Livestock production
Housing-Single unit
Housing-Senior
Housing-Other
Infrastructure
Fire house
Police station
Park & open space

Aug 21, 2024 • Final

Flood construction

Construct two city-maintained storm drain connections using polyvinyl chloride piping. All work will be performed in accordance with approved district plans and standard specifications.

Grading

Permit history is from public records and may be incomplete or inaccurate. Redfin and its agents make no representations about the property condition or permit status. Buyers should independently verify all information.

Property details

Parking

Parking / Garage Information
Attached Garage
# of Garage Spaces: 3
Converted Garage, Driveway, Garage - Three Door, RV Access/Parking, Street
# of Parking Spaces: 3

Interior

Laundry Information
Has Laundry
Dryer Included, Electric Dryer Hookup, See Remarks, Washer Hookup, Washer Included

Kitchen Information
Appliances: Built In Range, Coal Water Heater, Self Cleaning Oven, Convection Oven
Has Appliances
See Remarks
Kitchen Open to Family Room, Walk-In Pantry

Bathroom Information
# of Baths (Full): 3
Shower, Shower in Tub, Closet in bathroom

Cooling Information
Central, Electric, Gas, High Efficiency, See Remarks
Has Cooling

Room Information
Kitchen, Laundry, Living Room, Primary Bathroom, Primary Bedroom, See Remarks

Fireplace Information
Dining Room, Family Room, Kitchen, Living Room, Primary Bedroom, Electric, Gas, Gas Starter, See Remarks
Has Fireplace

Heating Information
Central Furnace
Has Heating

Interior Features
Double Door Entry
2 Staircases, Balcony
Levels: Two
Main Level Bathrooms: 3
Main Level Bedrooms: 1
Security Features: Carbon Monoxide Detector(s)
Spa Features: See Remarks
Window Features: Casement Windows

Exterior

Exterior Information
Structure Type: House
Roof: See Remarks
Fencing: See Remarks
Has Fence
Construction Materials: Steel, Stucco, Wood

Foundation Information
Foundation Details: See Remarks

Exterior Features
Satellite Dish, Stable, TV Antenna
Patio And Porch Features: See Remarks
Has Patio
Pool Features: None

Lot Information
Elevation Units: Feet
Lot Size Source: Assessor's Data
Lot Features: 0-1 Unit/Acre, Lot 20000-39999 Sqft

Property Information
Total # of Units: 1
Accessibility Features: 36 inch or more wide halls, See Remarks
Common Walls: No Common Walls
Parcel Number: 8714001013
Property Condition: Turnkey
Has View
Year Built Source: Public Records

Utilities

Utilities Information
Sewer: Public Sewer
Electricity Available, Natural Gas Available, Telephone - In Street, See Remarks, Sewer Available, Water Available
Water Source: District/Public, See Remarks, Well

Location

Neighborhood Information
Community Features: Street Lighting, Urban

School Information
Elementary School: Castle Rock
Middle Or Junior School: South Pointe
High School District: Walnut Valley Unified
Elementary School 2: CASROC
Middle Or Junior School 2: SOUPOI

Location Information
Latitude: 33.96990100
Longitude: -117.83966700
Directions: Diamond Bar Blvd
Road Frontage Type: Access via City Streets
Road Surface Type: Paved
Zoning: LCR19000*

Public facts

Beds: 3
Baths: 3.0
Sq. Ft.: 2,712
Stories: —
Lot Size: 0.56 acres
Style: Single Family Residential
Year Built: 1977
Year Renovated: 1977
County: Los Angeles County
APN: 8714001013

Home facts updated by county records on Aug 30, 2026

Other

Listing Information
Days Active in MLS: 72
Continuous Days Active in MLS: 72

Listing Agent Information
List Agent First Name: Rongrong
List Agent Last Name: Jin

Listing Office Information
List Office Name: Pinnacle Real Estate Group

Selling Agent Information
Buyer Agent First Name: Nhu
Buyer Agent Last Name: White

Selling Office Information
Buyer Office Name: Frontier Realty Inc

Around this home

Schools

Castle Rock Elementary School

Public K-5 • Assigned • 0.3mi

10/10

South Pointe Middle School

Public 6-8 • Assigned • 1.6mi

10/10

Diamond Bar High School

Public 9-12 • Assigned • 0.8mi

10/10

Provided by GreatSchools

Lifestyle

Provided by Walk Score and Local Logic

Local insights from Redfin agents

The real estate market is becoming more balanced. Buyers have more inventory, more data, and more time to make informed decisions than they did a year ago. Well-priced homes are still moving quickly, but today’s market rewards preparation, strategy,...
2 months ago • Los Angeles County
Peter Santos
Redfin Premier agent
82 deals
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Climate risks

1/10 Flood Factor

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

5/10 Fire Factor

4% 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

$1.47M – $1.78M

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New listings for sale in 91765

COMING SOON

$585,000

2 beds2.5 baths1,012 sq ft

1109 Golden Springs Dr Unit D, Diamond Bar, CA 91765

$1,648,000

4 beds3 baths3,212 sq ft

3315 Hawkwood, Diamond Bar, CA 91765

First Team Real Estate

$5,380,000

6 beds7 baths9,038 sq ft

2828 Water Course Dr, Diamond Bar, CA 91765

$1,199,999

4 beds2.5 baths1,915 sq ft

23308 Quail Smt, Diamond Bar, CA 91765

$818,800

3 beds3 baths1,570 sq ft

22935 Estoril Dr #6, Diamond Bar, CA 91765

3D WALKTHROUGH

$1,690,000

4 beds3 baths2,587 sq ft

1515 Sunbluff Dr, Diamond Bar, CA 91765

$538,000

3 beds2 baths1,047 sq ft

800 Grand Ave Unit D1, Diamond Bar, CA 91765

$1,070,000

4 beds2.5 baths1,893 sq ft

24126 Silver Spray, Diamond Bar, CA 91765

3D WALKTHROUGH

$1,150,000

4 beds3 baths1,747 sq ft

1036 Cogburn Ln, Diamond Bar, CA 91765

Home values near 21454 S Cold Spring Ln

Data from public records.

Address	Redfin Estimate
21478 Cold Spring Lane, Diamond Bar, CA 3 Beds \| 3 Baths \| 2712 Sq. Ft.	$1,336,002
21472 Cold Spring Lane, Diamond Bar, CA 4 Beds \| - Baths \| 2712 Sq. Ft.	$1,478,600

Address	Redfin Estimate
21476 Cold Spring Lane, Diamond Bar, CA 3 Beds \| 3 Baths \| 2796 Sq. Ft.	$1,460,093
21470 Cold Spring Lane, Diamond Bar, CA 3 Beds \| 3 Baths \| 2378 Sq. Ft.	$1,304,547

Address	Redfin Estimate
21474 Cold Spring Lane, Diamond Bar, CA 4 Beds \| 2 Baths \| 2037 Sq. Ft.	$1,378,239
21462 Cold Spring Lane, Diamond Bar, CA 3 Beds \| - Baths \| 2037 Sq. Ft.	$1,009,783

Property information provided by CRMLS when last listed in 2021. This data may not match . Learn more.

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