21425 Cold Spring Ln, Diamond Bar, CA 91765

Off market apr 2023 for $1M

$1,152,926

Est. refi paymentEst. refi $6,199/mo

•

2,796

sq ft

21425 Cold Spring Ln, Diamond Bar, CA 91765

About this home

Excellent opportunity to own a 5 Bedroom 3 full Bathroom single family house in a nice and quiet neighborhood in Diamond Bar, attached 3 car garage, with a huge backyard and a total lot size of 32,904 SQ FT. Very nice school district, walking distance to H Mart and easy access to freeways. This property is a dream house to handyman and fixers, and is being sold "as is". It is an excellent opportunity for a new owner to completely remodel to their taste. Do not miss!

Single-familyProperty Type

1977Year Built

0.76 acresLot Size

$412Est. Price/Sq.Ft.

3 car garageParking

Listed by Long Zhang •DRE #01947189 • Century 21 Affiliated

Bought with Angela Xu •DRE #01455022 • Re/Max Champions

Redfin checked: 2 minutes ago

•Source:CRMLS #PW22247988

Redfin Estimate

$1,152,926

$103K since sold in April 2023$13K since September

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 22.4% lower than the average sale price ($1.49M) of 6 comparable homes.

SOLD OCT 16, 2026
$1,688,888
A
5 beds3.5 baths4,375 sq ft
2169 Rocky Vw, Diamond Bar, CA 91765
SOLD SEP 28, 2026
$1,380,000
B
4 beds3 baths2,712 sq ft
21504 Cold Spring Ln, Diamond Bar, CA 91765
SOLD AUG 21, 2026
$1,680,000
C
5 beds3 baths3,006 sq ft
21642 High Bluff Rd, Diamond Bar, CA 91765
Century 21 Masters
SOLD MAY 28, 2026
$1,505,000
D
4 beds3 baths2,712 sq ft
3249 Hawkwood Rd, Diamond Bar, CA 91765
SOLD APR 28, 2026
$1,400,000
E
4 beds3 baths2,688 sq ft
2618 Rocky Trail Rd, Diamond Bar, CA 91765
SOLD SEP 4, 2026
$1,265,000
F
4 beds2.5 baths2,640 sq ft
3106 Cherrydale, Diamond Bar, CA 91765
New Star Realty & Inv.

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Earn from this home

Sell

$305,384

Est. take-home

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Refinance

Est. cash available

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Rent

$3,992/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

NEW 7 HRS AGO
$949,888
3 beds2 baths1,535 sq ft
1936 Ano Nuevo, Diamond Bar, CA 91765
COMING SOON
$849,900
3 beds2 baths1,553 sq ft
22709 Dry Creek Rd, Diamond Bar, CA 91765
OPEN SUN, 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 SUN, 12PM TO 3PM
$1,175,000
4 beds2.5 baths1,829 sq ft
21116 Silver Cloud, Diamond Bar, CA 91765
OPEN SUN, 2PM TO 4PM
$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 SUN, 1PM TO 4PM
$1,128,800
4 beds2 baths1,994 sq ft
1160 N Del Sol, Diamond Bar, CA 91765
Synergy Real Estate
OPEN SUN, 1PM TO 4PM
$555,000
2 beds1 bath914 sq ft
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Aramis Realty Group Inc.
See all

Provided by Redfin

Sale history for 21425 Cold Spring Ln

Date

Event

Price

CRMLS #PW22247988

Apr 7, 2023

Sold

$1,050,000

$376/sq ft

Apr 6, 2023

Pending

—

Mar 9, 2023

Contingent

—

Dec 13, 2022

Listed

$1,199,800

$429/sq ft

CRMLS #TR16713427

Jan 24, 2017

Sold

$948,000

$339/sq ft

Jan 11, 2017

Pending

—

Jan 10, 2017

Contingent

—

Oct 24, 2016

Price Changed

$958,000

$343/sq ft

Oct 5, 2016

Price Changed

$968,000

$346/sq ft

Oct 3, 2016

Relisted

—

Oct 3, 2016

Price Changed

$978,000

$350/sq ft

Sep 28, 2016

Listing Removed

—

Sep 28, 2016

Listed

$998,000

$357/sq ft

CRMLS #TR16139506

Jun 27, 2016

Listed

$998,000

$357/sq ft

CRMLS #TR14231801

Oct 30, 2014

Listed

$969,000

$347/sq ft

CRMLS #H218150

Oct 11, 2001

Listing Removed

—

Jun 28, 2001

Listed

$408,000

$146/sq ft

Public Records

May 8, 1978

Sold

$104,500

$37/sq ft

Year

Property tax

Land + Additions

Assessment*

2025

$13,802 (+5.0%)

$687,768 + $426,498

$1,114,266

2024

$13,148 (+1.8%)

$674,283 + $418,136

$1,092,419

2023

$12,918 (+2.1%)

$661,062 + $409,938

$1,071,000

2022

$12,652 (+1.9%)

$446,206 + $611,302

$1,057,508

2021

$12,419 (+1.3%)

$437,457 + $599,316

$1,036,773

2020

$12,261 (+2.0%)

$428,880 + $587,565

$1,016,445

2019

$12,025 (+3.6%)

$424,483 + $581,541

$1,006,024

2018

$11,606 (+88.7%)

$416,160 + $570,139

$986,299

2017

$6,149 (+3.3%)

$233,826 + $274,047

$507,873

2016

$5,955 (−0.6%)

$233,826 + $274,047

$507,873

2015

$5,989 (−0.3%)

$229,242 + $268,674

$497,916

2014

$6,007 (+1.1%)

$221,376 + $259,456

$480,832

2012

$5,941 (+2.9%)

$220,376 + $258,284

$478,660

2011

$5,771 (+0.8%)

$216,055 + $253,220

$469,275

2010

$5,727 (+0.3%)

$211,819 + $248,255

$460,074

2009

$5,707 (+2.7%)

$210,236 + $246,400

$456,636

2008

$5,555

$210,736 + $246,986

$457,722

Tax history for 21425 Cold Spring Ln

Year

Property tax

Land + Additions

Assessment*

2025

$13,802 (+5.0%)

$687,768 + $426,498

$1,114,266

2024

$13,148 (+1.8%)

$674,283 + $418,136

$1,092,419

2023

$12,918 (+2.1%)

$661,062 + $409,938

$1,071,000

2022

$12,652 (+1.9%)

$446,206 + $611,302

$1,057,508

2021

$12,419 (+1.3%)

$437,457 + $599,316

$1,036,773

2020

$12,261 (+2.0%)

$428,880 + $587,565

$1,016,445

2019

$12,025 (+3.6%)

$424,483 + $581,541

$1,006,024

2018

$11,606 (+88.7%)

$416,160 + $570,139

$986,299

2017

$6,149 (+3.3%)

$233,826 + $274,047

$507,873

2016

$5,955 (−0.6%)

$233,826 + $274,047

$507,873

2015

$5,989 (−0.3%)

$229,242 + $268,674

$497,916

2014

$6,007 (+1.1%)

$221,376 + $259,456

$480,832

2012

$5,941 (+2.9%)

$220,376 + $258,284

$478,660

2011

$5,771 (+0.8%)

$216,055 + $253,220

$469,275

2010

$5,727 (+0.3%)

$211,819 + $248,255

$460,074

2009

$5,707 (+2.7%)

$210,236 + $246,400

$456,636

2008

$5,555

$210,736 + $246,986

$457,722

*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

0.76 Acres

Year renovated

1977

Sq. Ft.

2,796

Year built

1977

Style

Single Family Residential

County

Los Angeles County

APN

8714005002

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
Garage, Garage Door Opener
Has Parking
# of Parking Spaces: 3

Interior

Laundry Information
Has Laundry
Gas Dryer Hookup, In Garage, Washer Hookup

Kitchen Information
Appliances: Barbecue, Electric Range
Has Appliances

Bathroom Information
# of Baths (Full): 3
Bathtub, Shower

Cooling Information
Central
Has Cooling

Room Information
Multi-Level Bedroom

Fireplace Information
Family Room
Has Fireplace

Heating Information
Central Furnace
Has Heating

Interior Features
Cathedral-Vaulted Ceilings
Levels: Two
Main Level Bathrooms: 2
Main Level Bedrooms: 2

Exterior

Exterior Information
Structure Type: House

Exterior Features
Patio And Porch Features: Patio
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
Common Walls: No Common Walls
Living Area Source: Assessor's Data
Parcel Number: 8714005002
Total # of Stories: 2
Has View
Year Built Source: Assessor

Utilities

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

Location

Neighborhood Information
Community Features: Suburban

School Information
High School District: Walnut Valley Unified

Location Information
Latitude: 33.97088900
Longitude: -117.83817400
Directions: Diamond Bar Blvd N Cold Spring LN
Zoning: LCR19000*

Public facts

Beds: 3
Baths: 3.0
Sq. Ft.: 2,796
Stories: —
Lot Size: 0.76 acres
Style: Single Family Residential
Year Built: 1977
Year Renovated: 1977
County: Los Angeles County
APN: 8714005002

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: Long
List Agent Last Name: Zhang

Listing Office Information
List Office Name: Century 21 Award

Selling Agent Information
Buyer Agent First Name: Angela
Buyer Agent Last Name: Xu

Selling Office Information
Buyer Office Name: Re/Max Champions

Around this home

Schools

Castle Rock Elementary School

Public K-5 • Assigned • 0.3mi

10/10

South Pointe Middle School

Public 6-8 • Assigned • 1.5mi

10/10

Diamond Bar High School

Public 9-12 • Assigned • 0.7mi

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

5/10 Heat Factor

6 days above 98° expected this year, 16 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

$1.10M – $1.33M

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Synergy Real Estate

Home values near 21425 Cold Spring Ln

Data from public records.

Address	Redfin Estimate
21454 Cold Spring Ln, Diamond Bar, CA 4 Beds \| 3 Baths \| 2712 Sq. Ft.	$1,500,947
21438 Cold Spring Ln, Diamond Bar, CA 4 Beds \| 2 Baths \| 2037 Sq. Ft.	$1,236,613

Address	Redfin Estimate
21450 Cold Spring Ln, Diamond Bar, CA 5 Beds \| 3 Baths \| 2796 Sq. Ft.	$1,193,119
21415 Cold Spring Ln, Diamond Bar, CA 4 Beds \| 2 Baths \| 2037 Sq. Ft.	$1,381,179

Address	Redfin Estimate
21446 Cold Spring Ln, Diamond Bar, CA 4 Beds \| 3 Baths \| 3145 Sq. Ft.	$1,467,509
21429 Cold Spring Ln, Diamond Bar, CA 3 Beds \| 3 Baths \| 2712 Sq. Ft.	$1,327,116

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

Sale history for 21425 Cold Spring Ln

Tax history for 21425 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 21425 Cold Spring Ln

More real estate resources