21446 Cold Spring Ln, Diamond Bar, CA 91765

Off Market Dec 2009 for $730K

$1,472,747

Est. refi paymentEst. refi $4,743/mo

•

3,145

sq ft

21446 Cold Spring Ln, Diamond Bar, CA 91765

About this home

A stunning beauty with spectacular VIEW VIEW VIEW!!! Well maintained and beautifully remodeled family home with 180 degree view of foothills, mountains and city lights view! Upgraded kitchen with built-in refrigerator, granite counter tops and beautiful mahogany cabinets. Matching laminated wood floor throughout downstairs and upstairs. Wide open tile entry with high ceiling and bright open floor plan throughout. Spacious master suite with gorgeous view and two bedroom comes with jack and jill bathroom upstairs. Every room with ceiling fans except MBR. Optional 1 BR downstairs currently used as den and comes with 3/4 bath next to it. Manicured landscaping front and backyard with lattice patio cover. Just a few minutes to shops, restaurants and NEW Super H mart. Highly acclaimed Walnut Valley Sch Dist with South Pointe Middle School and Diamond Bar High. Bring your fussiest buyer.

Single-familyProperty Type

1977Year Built

0.54 acresLot Size

$468Est. Price/Sq.Ft.

3 car garageParking

Listed by Susan Lee •DRE #00904544 • Coldwell Banker Tri-Counties R

Bought with David Corsaro •DRE #01115387 • TCCD Real Estate

Redfin checked: 2 minutes ago

•Source:CRMLS #H09113010

Redfin Estimate

$1,472,747

$743K since sold in December 2009$9,000 since August

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 3.3% lower 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

$1,048,886

Est. take-home

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Refinance

Est. cash available

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Rent

$4,059/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 21446 Cold Spring Ln

Year

Property tax

Land + Additions

Assessment*

2025

$12,255 (+5.3%)

$421,446 + $520,841

$942,287

2024

$11,643 (+2.9%)

$421,446 + $520,841

$942,287

2023

$11,320 (+2.5%)

$413,183 + $510,629

$923,812

2022

$11,039 (+1.9%)

$405,082 + $500,617

$905,699

2021

$10,836 (+1.3%)

$397,140 + $490,801

$887,941

2020

$10,700 (+1.9%)

$389,353 + $481,178

$870,531

2019

$10,497 (+4.9%)

$385,361 + $476,245

$861,606

2018

$10,011 (+4.8%)

$377,805 + $466,907

$844,712

2017

$9,553 (+3.0%)

$363,136 + $448,777

$811,913

2016

$9,271 (−0.6%)

$363,136 + $448,777

$811,913

2015

$9,330 (−0.1%)

$356,016 + $439,978

$795,994

2014

$9,344 (+1.0%)

$343,800 + $424,881

$768,681

2012

$9,250 (+2.9%)

$342,247 + $422,961

$765,208

2011

$8,987 (+0.7%)

$335,537 + $414,668

$750,205

2010

$8,923 (+128.6%)

$328,958 + $406,538

$735,496

2009

$3,903 (+2.8%)

$326,500 + $403,500

$730,000

2008

$3,795

$66,286 + $236,181

$302,467

Tax history for 21446 Cold Spring Ln

Year

Property tax

Land + Additions

Assessment*

2025

$12,255 (+5.3%)

$421,446 + $520,841

$942,287

2024

$11,643 (+2.9%)

$421,446 + $520,841

$942,287

2023

$11,320 (+2.5%)

$413,183 + $510,629

$923,812

2022

$11,039 (+1.9%)

$405,082 + $500,617

$905,699

2021

$10,836 (+1.3%)

$397,140 + $490,801

$887,941

2020

$10,700 (+1.9%)

$389,353 + $481,178

$870,531

2019

$10,497 (+4.9%)

$385,361 + $476,245

$861,606

2018

$10,011 (+4.8%)

$377,805 + $466,907

$844,712

2017

$9,553 (+3.0%)

$363,136 + $448,777

$811,913

2016

$9,271 (−0.6%)

$363,136 + $448,777

$811,913

2015

$9,330 (−0.1%)

$356,016 + $439,978

$795,994

2014

$9,344 (+1.0%)

$343,800 + $424,881

$768,681

2012

$9,250 (+2.9%)

$342,247 + $422,961

$765,208

2011

$8,987 (+0.7%)

$335,537 + $414,668

$750,205

2010

$8,923 (+128.6%)

$328,958 + $406,538

$735,496

2009

$3,903 (+2.8%)

$326,500 + $403,500

$730,000

2008

$3,795

$66,286 + $236,181

$302,467

*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

23,379

Year renovated

2023

Sq. Ft.

3,145

Year built

1977

Style

Single Family Residential

County

Los Angeles County

APN

8714001015

Parking Spaces

Basement

Accessible

HOA Dues

—

Garage

Yes

Features

Views

Last updated by owner on May 4, 2023.

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

Property details

Parking

Parking / Garage Information
Attached Garage
# of Garage Spaces: 3
Direct Garage Access, Garage Door Opener
Has Parking

Interior

Laundry Information
Has Laundry
Individual Room

Kitchen Information
Appliances: Built-In, Dishwasher, Garbage Disposal, Oven, Range
Has Appliances
Breakfast Nook

Bathroom Information
# of Baths (Full): 3

Cooling Information
Central
Has Cooling

Room Information
Den, Family Room, Jack & Jill, Living Room, Primary Bedroom

Fireplace Information
Family Room
Has Fireplace

Flooring Information
Tile, Wood

Heating Information
Forced Air
Has Heating

Interior Features
Built-Ins, Ceiling Fan
Levels: Two
Security Features: Smoke Detector

Exterior

Exterior Information
Roof: Spanish Tile
Construction Materials: Stucco

Exterior Features
Patio And Porch Features: Covered, Concrete
Has Patio
Pool Features: None
Has Sprinklers

Lot Information
Lot Size Source: Assessor's Data
Lot Features: Landscaped, Value In Land, Sprinklers In Front, Sprinklers In Rear, Sprinkler System

Property Information
Living Area Source: Assessor's Data
Parcel Number: 8714001015
Property Condition: Turnkey
Has View

Utilities

Utilities Information
Electric: 220V In Garage
Cable Available
Water Source: District/Public

Location

School Information
High School District: Walnut Valley Unified

Location Information
Latitude: 33.97018500
Longitude: -117.83933200

Public facts

Beds: 4
Baths: 3.0
Sq. Ft.: 3,145
Stories: —
Parking Spaces: 3
Basement: No
Accessible: No
Lot Size: 0.54 acres
Style: Single Family Residential
Year Built: 1977
Year Renovated: 2023
County: Los Angeles County
APN: 8714001015
HOA Dues: —
Garage: Yes
Features: Views

Home facts updated by owner on May 4, 2023

Other

Miscellaneous Information
Exclusions: Seller reserves two large Chandeliers (one in entry, one in dining).

Listing Information
Days Active in MLS: 22
Continuous Days Active in MLS: 22

Listing Agent Information
List Agent First Name: Susan
List Agent Last Name: Lee

Listing Office Information
List Office Name: Coldwell Banker Tri-Counties R

Selling Agent Information
Buyer Agent First Name: David
Buyer Agent Last Name: Corsaro

Selling Office Information
Buyer Office Name: TCCD Real Estate

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

$1.55M – $1.87M

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Nearby similar homes

$1,648,000

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First Team Real Estate

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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

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Home values near 21446 Cold Spring Ln

Data from public records.

Address	Redfin Estimate
21472 Cold Spring Lane, Diamond Bar, CA 4 Beds \| - Baths \| 2712 Sq. Ft.	$1,478,600
21458 Cold Spring Lane, Diamond Bar, CA 4 Beds \| 3 Baths \| 2294 Sq. Ft.	$1,249,396

Address	Redfin Estimate
21470 Cold Spring Lane, Diamond Bar, CA 3 Beds \| 3 Baths \| 2378 Sq. Ft.	$1,304,547
21454 Cold Spring Lane, Diamond Bar, CA 4 Beds \| 3 Baths \| 2712 Sq. Ft.	$1,545,106

Address	Redfin Estimate
21462 Cold Spring Lane, Diamond Bar, CA 3 Beds \| - Baths \| 2037 Sq. Ft.	$1,009,783
21450 Cold Spring Lane, Diamond Bar, CA 5 Beds \| 3 Baths \| 2796 Sq. Ft.	$1,231,210

Property information provided by CRMLS when last listed in 2009. This data may not show owner updates. 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 21446 Cold Spring Ln

Tax history for 21446 Cold Spring Ln

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 21446 Cold Spring Ln

More real estate resources