21458 COLD SPRING Ln, Diamond Bar, CA 91765

Off Market Sep 2009 for $523K

$1,177,270

Est. refi paymentEst. refi $3,316/mo

•

2,294

sq ft

21458 COLD SPRING Ln, Diamond Bar, CA 91765

About this home

Single-familyProperty Type

1977Year Built

0.54 acresLot Size

$513Est. Price/Sq.Ft.

2 car garageParking

Listed by Rose Cervantes •DRE #00675089 • CENTURY 21 Affiliated

Bought with TOM GU •DRE #01204367 • TG REALTY & INVESTMENT

Redfin checked: 2 minutes ago

•Source:CRMLS #C09060136

Redfin Estimate

$1,177,270

$653K since sold in September 2009$4,000 since August

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 14.1% higher than the average sale price ($1.03M) of 6 comparable homes.

SOLD FEB 26, 2026
$1,180,000
A
3 beds2 baths1,752 sq ft
21465 Running Br, Diamond Bar, CA 91765
SOLD SEP 19, 2025
$1,050,000
B
3 beds2 baths1,759 sq ft
3474 Falcon Ridge Rd, Diamond Bar, CA 91765
SOLD AUG 14, 2026
$977,308
C
3 beds2 baths1,527 sq ft
20206 Evening Breeze Dr, Walnut, CA 91789
SOLD DEC 9, 2025
$1,050,000
D
3 beds2 baths1,550 sq ft
1806 MORNING CANYON Rd, Diamond Bar, CA 91765
SOLD SEP 24, 2025
$1,150,000
E
3 beds2 baths1,550 sq ft
21315 Pinehill Ln, Diamond Bar, CA 91765
SOLD JUL 24, 2026
$785,000
F
3 beds2 baths1,460 sq ft
1916 Chestnut Creek Rd, Diamond Bar, CA 91765

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Sell

$871,409

Est. take-home

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Est. cash available

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Rent

$3,611/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

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22915 Colombard Ln #2, Diamond Bar, CA 91765
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2 beds2 baths940 sq ft
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$1,199,900
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21325 Hipass Dr, Diamond Bar, CA 91765
OPEN SAT, 2:30PM TO 5:30PM
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See all

Provided by Redfin

Sale history for 21458 COLD SPRING Ln

Year

Property tax

Land + Additions

Assessment*

2025

$10,065 (+5.1%)

$457,460 + $312,200

$769,660

2024

$9,580 (+2.9%)

$457,460 + $312,200

$769,660

2023

$9,306 (+2.7%)

$448,491 + $306,079

$754,570

2022

$9,066 (+1.9%)

$439,698 + $300,078

$739,776

2021

$8,898 (+1.3%)

$431,077 + $294,195

$725,272

2020

$8,786 (+1.9%)

$422,625 + $288,427

$711,052

2019

$8,620 (+5.3%)

$418,292 + $285,470

$703,762

2018

$8,184 (+18.7%)

$410,091 + $279,873

$689,964

2017

$6,896 (+3.0%)

$394,167 + $188,406

$582,573

2016

$6,696 (−0.6%)

$394,167 + $188,406

$582,573

2015

$6,735 (−0.2%)

$386,439 + $184,712

$571,151

2014

$6,749 (+1.1%)

$373,179 + $178,375

$551,554

2012

$6,675 (+2.9%)

$371,493 + $177,569

$549,062

2011

$6,485 (+0.8%)

$364,209 + $174,088

$538,297

2010

$6,436 (+182.5%)

$357,068 + $170,675

$527,743

2009

$2,278 (+3.1%)

$354,400 + $169,400

$523,800

2008

$2,210

$36,764 + $127,103

$163,867

Tax history for 21458 COLD SPRING Ln

Year

Property tax

Land + Additions

Assessment*

2025

$10,065 (+5.1%)

$457,460 + $312,200

$769,660

2024

$9,580 (+2.9%)

$457,460 + $312,200

$769,660

2023

$9,306 (+2.7%)

$448,491 + $306,079

$754,570

2022

$9,066 (+1.9%)

$439,698 + $300,078

$739,776

2021

$8,898 (+1.3%)

$431,077 + $294,195

$725,272

2020

$8,786 (+1.9%)

$422,625 + $288,427

$711,052

2019

$8,620 (+5.3%)

$418,292 + $285,470

$703,762

2018

$8,184 (+18.7%)

$410,091 + $279,873

$689,964

2017

$6,896 (+3.0%)

$394,167 + $188,406

$582,573

2016

$6,696 (−0.6%)

$394,167 + $188,406

$582,573

2015

$6,735 (−0.2%)

$386,439 + $184,712

$571,151

2014

$6,749 (+1.1%)

$373,179 + $178,375

$551,554

2012

$6,675 (+2.9%)

$371,493 + $177,569

$549,062

2011

$6,485 (+0.8%)

$364,209 + $174,088

$538,297

2010

$6,436 (+182.5%)

$357,068 + $170,675

$527,743

2009

$2,278 (+3.1%)

$354,400 + $169,400

$523,800

2008

$2,210

$36,764 + $127,103

$163,867

*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

23,587

Year renovated

1985

Sq. Ft.

2,294

Year built

1977

Style

Single Family Residential

County

Los Angeles County

APN

8714001012

Parking Spaces

Basement

Accessible

HOA Dues

—

Garage

Yes

Features

Views

Last updated by owner on Feb 7, 2020.

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: 2
Driveway, Direct Garage Access, Garage Door Opener
Has Parking
# of Parking Spaces: 2

Interior

Laundry Information
Has Laundry
In Garage

Kitchen Information
Appliances: Built-In, Double Oven, Dishwasher, Gas Cooking, Garbage Disposal, Range
Has Appliances
Dining Ell

Bathroom Information
# of Baths (Full): 2

Cooling Information
Central
Has Cooling

Room Information
Family Room, Living Room, Primary Bedroom, Main Floor Primary Bedroom

Fireplace Information
Family Room
Has Fireplace

Heating Information
Forced Air
Has Heating

Interior Features
Cathedral-Vaulted Ceilings, Copper Plumbing Full
Levels: One

Exterior

Exterior Information
Roof: Concrete
Has Fence
Construction Materials: Stucco

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

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

Property Information
Common Walls: No Common Walls
Living Area Source: Assessor's Data
Parcel Number: 8714001012
Has View

Financial

Assesments Information
Assessments: Unknown

Utilities

Utilities Information
Electric: 220V In Garage
Sewer: Sewer Paid
Cable Available, Sewer Connected, Underground Utilities
Water Source: District/Public

Location

Neighborhood Information
Community Features: Curbs, Sidewalks, Storm Drains

School Information
High School District: Walnut Valley Unified

Location Information
Latitude: 33.96960000
Longitude: -117.83969500
Directions: From Grand, So on Dia Bar to Street Left to #

Public facts

Beds: 4
Baths: 3.0
Sq. Ft.: 2,294
Stories: —
Parking Spaces: 2
Basement: No
Accessible: No
Lot Size: 0.54 acres
Style: Single Family Residential
Year Built: 1977
Year Renovated: 1985
County: Los Angeles County
APN: 8714001012
HOA Dues: —
Garage: Yes
Features: Views

Home facts updated by owner on Feb 7, 2020

Other

Listing Information
Days Active in MLS: 48
Continuous Days Active in MLS: 48

Listing Agent Information
List Agent First Name: ROSE
List Agent Last Name: CERVANTES

Listing Office Information
List Office Name: CENTURY 21 SUPERSTARS

Selling Agent Information
Buyer Agent First Name: TOM
Buyer Agent Last Name: GU

Selling Office Information
Buyer Office Name: TG REALTY & INVESTMENT

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

5% 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

$1.12M – $1.35M

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Home values near 21458 COLD SPRING Ln

Data from public records.

Address	Redfin Estimate
21478 Cold Spring Ln, Diamond Bar, CA 3 Beds \| 3 Baths \| 2712 Sq. Ft.	$1,353,157
21472 Cold Spring Ln, Diamond Bar, CA 4 Beds \| - Baths \| 2712 Sq. Ft.	$1,476,151

Address	Redfin Estimate
21476 Cold Spring Ln, Diamond Bar, CA 3 Beds \| 3 Baths \| 2796 Sq. Ft.	$1,470,833
21470 Cold Spring Ln, Diamond Bar, CA 3 Beds \| 3 Baths \| 2378 Sq. Ft.	$1,317,740

Address	Redfin Estimate
21474 Cold Spring Ln, Diamond Bar, CA 4 Beds \| 2 Baths \| 2037 Sq. Ft.	$1,384,367
21462 Cold Spring Ln, Diamond Bar, CA 3 Beds \| - Baths \| 2037 Sq. Ft.	$1,017,622

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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