21450 Cold Spring Ln, Diamond Bar, CA 91765

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Off market oct 2022 for $1M

$1,193,119

Est. refi paymentEst. refi $5,625/mo

•

2,796

sq ft

21450 Cold Spring Ln, Diamond Bar, CA 91765

About this home

location location location ! The best Location in Diamond bar. 8 mins walk to "H Mart" market. 5 mins driving to Diamond bar high school. GREAT POTENTIAL Flip or fixer HOME in Walnut school district. Gorgeous and viewed home in prime and prestigious location. The whole house is bright and airy, Modern and open floor plan, Huge backyard with panoramic view. .. . 3 car attached garage. .. .High ceiling in Living room and dining. .. .. 4 Bedrooms 3 Baths. .. . Additional library downstairs can be used as a 5th bedroom (Right next to it is a full bath). .. . Engineering wood floor throughout first and second floor. Easy access to Fwy #57 & #60., . . .. Great potential - will be a gem after makeover.

Single-familyProperty Type

1977Year Built

0.54 acresLot Size

$427Est. Price/Sq.Ft.

3 car garageParking

Listed by WILLA YOU •DRE #01399832 • Uhomes.com California, INC.

Bought with HANG ZHAO •DRE #02017289 • NORTHLAND REAL ESTATE GROUP, I

Redfin checked: 3 minutes ago

•Source:CRMLS #WS22129813

Redfin Estimate

$1,193,119

$135K since sold in October 2022$29K since September

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 21.3% lower than the average sale price ($1.52M) of 6 comparable homes.

SOLD SEP 28, 2026
$1,380,000
A
4 beds3 baths2,712 sq ft
21504 Cold Spring Ln, 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 28, 2026
$1,505,000
C
4 beds3 baths2,712 sq ft
3249 Hawkwood Rd, Diamond Bar, CA 91765
SOLD SEP 4, 2026
$1,265,000
D
4 beds2.5 baths2,640 sq ft
3106 Cherrydale, Diamond Bar, CA 91765
New Star Realty & Inv.
SOLD JUL 17, 2026
$1,589,000
E
4 beds2.5 baths2,805 sq ft
21040 Ambushers, Diamond Bar, CA 91765
New Star Realty & Inv.
SOLD MAY 12, 2026
$1,680,000
F
4 beds3 baths2,697 sq ft
21535 Chirping Sparrow, Diamond Bar, CA 91765

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Earn from this home

Sell

$345,400

Est. take-home

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Refinance

Est. cash available

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Rent

$4,034/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

97.8%

0.8% MoM

Median sale price

$1.1M

$12K MoM

Avg. days on market

61d

18 days MoM

Recently sold homes

3 MoM

New listings for sale

COMING SOON
$849,900
3 beds2 baths1,553 sq ft
22709 Dry Creek Rd, Diamond Bar, CA 91765
OPEN TODAY, 1PM TO 4PM
$750,000
4 beds3 baths1,619 sq ft
2119 Dublin Ln #2, Diamond Bar, CA 91765
$399,000
2 beds1 bath850 sq ft
22801 Hilton Head Dr #17, Diamond Bar, CA 91765
$399,000
2 beds1 bath850 sq ft
22804 Hilton Head Dr #40, Diamond Bar, CA 91765
Pinnacle Real Estate Group
OPEN TODAY, 12PM TO 3PM
$1,175,000
4 beds2.5 baths1,829 sq ft
21116 Silver Cloud, Diamond Bar, CA 91765
OPEN TODAY
$1,100,000
4 beds2 baths1,662 sq ft
3716 Crooked Crk, Diamond Bar, CA 91765
$4,200,000
5 beds6 baths6,257 sq ft
2945 Steeplechase, Diamond Bar, CA 91765
OPEN TODAY TO 3PM
$1,128,800
4 beds2 baths1,994 sq ft
1160 N Del Sol, Diamond Bar, CA 91765
Synergy Real Estate
OPEN TODAY, 1PM TO 4PM
$555,000
2 beds1 bath914 sq ft
21755 Laurelrim Unit B, Diamond Bar, CA 91765
Aramis Realty Group Inc.
$3,070,000
6 beds8 baths7,884 sq ft
23240 Ridge Line, Diamond Bar, CA 91765
See all

Provided by Redfin

Redfin agents who toured

Home appears to be original condition
4 years ago• May not reflect the current state of the home
Renee Staton
Redfin Associate agent

Sale history for 21450 Cold Spring Ln

Date

Event

Price

Public Records

Oct 7, 2022

Sold

$1,046,000

$374/sq ft

CRMLS #WS22129813

Oct 7, 2022

Sold

$1,058,000

$378/sq ft

Aug 19, 2022

Pending

—

Aug 13, 2022

Price Changed

$1,098,000

$393/sq ft

Jul 22, 2022

Price Changed

$1,180,000

$422/sq ft

Jul 16, 2022

Price Changed

$1,280,000

$458/sq ft

Jul 11, 2022

Price Changed

$1,250,000

$447/sq ft

Jun 17, 2022

Listed

$1,280,000

$458/sq ft

CRMLS #TR15089423

Oct 27, 2015

Listing Removed

—

Aug 9, 2015

Price Changed

$879,000

$314/sq ft

Jun 14, 2015

Price Changed

$899,000

$322/sq ft

Apr 28, 2015

Listed

$929,000

$332/sq ft

CRMLS #A12074029

Mar 6, 2013

Sold

$680,000

$243/sq ft

Jan 30, 2013

Pending

—

Jan 2, 2013

Delisted

—

Jan 1, 2013

Relisted

—

Nov 12, 2012

Delisted

—

Nov 6, 2012

Relisted

—

Sep 13, 2012

Delisted

—

Sep 6, 2012

Relisted

—

Aug 17, 2012

Delisted

—

Jul 1, 2012

Price Changed

$688,000

$246/sq ft

Jun 13, 2012

Listed

$699,000

$250/sq ft

GREAT POTENTIAL HOME in Diamond Bar with Walnut School. - DO NOT MISS IT OUT !!!! Gorgeous and viewed home in prime and prestigeous location. .. .. Great curb appearl. .. .. The whole house is bright and airy. .. .. Modern and open floor plan. .. . Huge backyard with panaramic view. .. . 3 car attached garage. .. .High ceiling in Living room and dining. .. .. 3 Bedrooms 3 Baths. .. . Additional library downstairs can be used as a 4th bedrorm. Right next to it is a full bath. .. . Engineering wood floor throughtout first floor. .. . Remodeled kitchen with stainless steel appliances, granite top. .. . A spacious 2nd family room (close to 450') upstairs added family fun, Vaulted master bedroom with view, ample walk-in closet, spacious master bath with tub and shower, double sink . .. .. Easy access to Fwy #57 & #60.. .. Short sale subject to lender approval, Great potential - will be a gem after makeover

CRMLS #H602974

May 30, 2006

Sold

$795,000

$284/sq ft

Mar 4, 2006

Listed

$818,000

$293/sq ft

Public Records

Jun 21, 2000

Sold

$373,000

$133/sq ft

Year

Property tax

Land + Additions

Assessment*

2025

$13,901 (+4.9%)

$780,518 + $329,504

$1,110,022

2024

$13,249 (+2.8%)

$765,214 + $323,044

$1,088,258

2023

$12,884 (+30.0%)

$750,210 + $316,710

$1,066,920

2022

$9,908 (+2.4%)

$735,500 + $310,500

$1,046,000

2021

$9,673 (+1.3%)

$377,357 + $411,706

$789,063

2020

$9,552 (+1.9%)

$369,958 + $403,634

$773,592

2019

$9,371 (+4.5%)

$366,165 + $399,496

$765,661

2018

$8,968 (+4.8%)

$358,986 + $391,663

$750,649

2017

$8,560 (+3.1%)

$345,048 + $376,455

$721,503

2016

$8,303 (−0.6%)

$345,048 + $376,455

$721,503

2015

$8,355 (−0.2%)

$338,283 + $369,074

$707,357

2014

$8,369 (+5.1%)

$326,676 + $356,410

$683,086

2012

$7,964 (+1.1%)

$439,300 + $206,800

$646,100

2011

$7,881 (+6.1%)

$439,300 + $206,800

$646,100

2010

$7,426 (+0.5%)

$439,300 + $206,800

$646,100

2009

$7,392 (−24.9%)

$412,500 + $194,200

$606,700

2008

$9,847

$412,500 + $194,200

$606,700

Tax history for 21450 Cold Spring Ln

Year

Property tax

Land + Additions

Assessment*

2025

$13,901 (+4.9%)

$780,518 + $329,504

$1,110,022

2024

$13,249 (+2.8%)

$765,214 + $323,044

$1,088,258

2023

$12,884 (+30.0%)

$750,210 + $316,710

$1,066,920

2022

$9,908 (+2.4%)

$735,500 + $310,500

$1,046,000

2021

$9,673 (+1.3%)

$377,357 + $411,706

$789,063

2020

$9,552 (+1.9%)

$369,958 + $403,634

$773,592

2019

$9,371 (+4.5%)

$366,165 + $399,496

$765,661

2018

$8,968 (+4.8%)

$358,986 + $391,663

$750,649

2017

$8,560 (+3.1%)

$345,048 + $376,455

$721,503

2016

$8,303 (−0.6%)

$345,048 + $376,455

$721,503

2015

$8,355 (−0.2%)

$338,283 + $369,074

$707,357

2014

$8,369 (+5.1%)

$326,676 + $356,410

$683,086

2012

$7,964 (+1.1%)

$439,300 + $206,800

$646,100

2011

$7,881 (+6.1%)

$439,300 + $206,800

$646,100

2010

$7,426 (+0.5%)

$439,300 + $206,800

$646,100

2009

$7,392 (−24.9%)

$412,500 + $194,200

$606,700

2008

$9,847

$412,500 + $194,200

$606,700

*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

0.54 Acres

Year renovated

1977

Sq. Ft.

2,796

Year built

1977

Style

Single Family Residential

County

Los Angeles County

APN

8714001014

Parking Spaces

—

Basement

—

Accessible

—

HOA Dues

—

Garage

—

Features

—

Last updated by owner on Oct 7, 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

Property details

Parking

Parking / Garage Information
Attached Garage
# of Garage Spaces: 3
Direct Garage Access, Driveway, Garage - Front Entry, Garage - Three Door
Has Parking
# of Parking Spaces: 3

Interior

Laundry Information
Has Laundry
Individual Room, Inside, Propane Dryer Hookup, Washer Hookup

Kitchen Information
Appliances: Built In Range, Electric Range
Has Appliances
Formal Dining Room, In Living Room
Walk-In Pantry

Bathroom Information
# of Baths (Full): 3
Bathtub

Cooling Information
Central
Has Cooling

Room Information
All Bedrooms Up, Primary Suite, Walk-In Closet, Walk-In Pantry

Fireplace Information
Family Room
Has Fireplace

Heating Information
Central Furnace
Has Heating

Interior Features
Open Floor Plan
Levels: Two
Main Level Bathrooms: 2
Main Level Bedrooms: 2

Exterior

Exterior Information
Structure Type: House
Fencing: Brick Wall
Has Fence

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

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

Property Information
Total # of Units: 1
Accessibility Features: None
Common Walls: No Common Walls
Living Area Source: Assessor's Data
Parcel Number: 8714001014
Property Condition: Fixer, Repairs Cosmetic
Has View
Year Built Source: Public Records

Financial

Assesments Information
Assessments: Unknown

Utilities

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

Location

Neighborhood Information
Community Features: Sidewalks, Street Lighting

School Information
Middle Or Junior School: South Point
High School: Diamond Bar
High School District: Walnut Valley Unified
Middle Or Junior School 2: SOUPOI2
High School 2: DIABAR

Location Information
Latitude: 33.97011300
Longitude: -117.83968300
Directions: East of Diamond bar Blvd
Zoning: LCR19000*

Public facts

Beds: 3
Baths: 3.0
Sq. Ft.: 2,796
Stories: —
Lot Size: 0.54 acres
Style: Single Family Residential
Year Built: 1977
Year Renovated: 1977
County: Los Angeles County
APN: 8714001014

Home facts updated by county records on Oct 7, 2026

Other

Listing Information
Days Active in MLS: 63
Continuous Days Active in MLS: 63

Listing Agent Information
List Agent First Name: WILLA
List Agent Last Name: YOU

Listing Office Information
List Office Name: UHOUZZ CALIFORNIA INC.

Selling Agent Information
Buyer Agent First Name: HANG
Buyer Agent Last Name: ZHAO

Selling Office Information
Buyer Office Name: NORTHLAND REAL ESTATE GROUP, I

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

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

$1.13M – $1.37M

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Home values near 21450 Cold Spring Ln

Data from public records.

Address	Redfin Estimate
21476 Cold Spring Ln, Diamond Bar, CA 3 Beds \| 3 Baths \| 2796 Sq. Ft.	$1,416,152
21470 Cold Spring Ln, Diamond Bar, CA 3 Beds \| 3 Baths \| 2378 Sq. Ft.	$1,316,364

Address	Redfin Estimate
21474 Cold Spring Ln, Diamond Bar, CA 4 Beds \| 2 Baths \| 2037 Sq. Ft.	$1,353,290
21462 Cold Spring Ln, Diamond Bar, CA 3 Beds \| - Baths \| 2037 Sq. Ft.	$955,763

Address	Redfin Estimate
21472 Cold Spring Ln, Diamond Bar, CA 4 Beds \| - Baths \| 2712 Sq. Ft.	$1,428,921
21458 Cold Spring Ln, Diamond Bar, CA 4 Beds \| 3 Baths \| 2294 Sq. Ft.	$1,166,661

Property information provided by CRMLS when last listed in 2022. 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 21450 Cold Spring Ln

Tax history for 21450 Cold Spring Ln

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 21450 Cold Spring Ln

More real estate resources