21474 Cold Spring Ln, Diamond Bar, CA 91765

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Off Market Sep 2009 for $610K

$1,378,239

Est. refi paymentEst. refi $3,963/mo

•

2,037

sq ft

21474 Cold Spring Ln, Diamond Bar, CA 91765

About this home

Well maintained bright single story home with 3 bedrooms, den, large family and living room. Den can be used as a 4th bedroom. This beautiful home has 180 Degree city light view, sparkling pool and spa, and lots of upgrades including newly remodeled and upgraded kitchen with custom cabinets and granite counter tops, stainless steel appliances, and custom paint. From the master bedroom, family room and the kitchen you have the view of the pool and the breathtaking city lights. The master bath has been remodeled with new custom tiles. Other features include cathedral ceiling, fire place in living room, breakfasr area, and wood and granite flooring. Walnut School district.

Single-familyProperty Type

1977Year Built

0.62 acresLot Size

$677Est. Price/Sq.Ft.

Listed by Mandy Alavi •DRE #01397175 • Global Realty

Bought with OUT OF AREA ARCADIA • OUT OF AREA OFFICE

Redfin checked: 2 minutes ago

•Source:CRMLS #A09048328

Redfin Estimate

$1,378,239

$768K since sold in September 2009$12K since August

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 1.9% higher than the average sale price ($1.35M) of 6 comparable homes.

SOLD MAY 14, 2026
$1,330,000
A
4 beds3 baths2,037 sq ft
3357 Bent Twig, Diamond Bar, CA 91765
SOLD FEB 26, 2026
$1,180,000
B
3 beds2 baths1,752 sq ft
21465 Running Br, Diamond Bar, CA 91765
SOLD AUG 10, 2026
$1,163,000
C
4 beds2 baths1,780 sq ft
1934 Ano Nuevo, Diamond Bar, CA 91765
Pinnacle Real Estate Group
SOLD MAY 28, 2026
$1,505,000
D
4 beds3 baths2,712 sq ft
3249 Hawkwood Rd, Diamond Bar, CA 91765
SOLD JUL 10, 2026
$1,350,000
E
4 beds3 baths2,268 sq ft
1754 Leaning Pne, Diamond Bar, CA 91765
SOLD JUL 17, 2026
$1,589,000
F
4 beds2.5 baths2,805 sq ft
21040 Ambushers, Diamond Bar, CA 91765
New Star Realty & Inv.

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Sell

$1,020,496

Est. take-home

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Refinance

Est. cash available

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Rent

$3,401/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
OPEN TODAY, 1PM TO 5PM
$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
OPEN TODAY, 1PM TO 3PM
$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
OPEN TODAY, 1AM TO 3PM
$1,690,000
4 beds3 baths2,587 sq ft
1515 Sunbluff Dr, Diamond Bar, CA 91765
OPEN TODAY, 1PM TO 4PM
$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
OPEN TODAY, 1PM TO 4PM
$1,150,000
4 beds3 baths1,747 sq ft
1036 Cogburn Ln, Diamond Bar, CA 91765
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1030 Golden Springs Dr Unit B, Diamond Bar, CA 91765
See all

Provided by Redfin

Sale history for 21474 Cold Spring Ln

Date

Event

Price

CRMLS #TR14143756

Sep 5, 2014

Delisted

—

Jul 8, 2014

Listed

$929,000

$456/sq ft

CRMLS #A09048328

Sep 22, 2009

Sold

$610,000

$299/sq ft

Aug 18, 2009

Listing Removed

—

Aug 6, 2009

Contingent

—

Jul 24, 2009

Price Changed

$634,900

$312/sq ft

May 27, 2009

Price Changed

$649,000

$319/sq ft

Apr 29, 2009

Listed

$675,000

$331/sq ft

Public Records

May 27, 2005

Sold

$640,000

$314/sq ft

CRMLS #H503500

May 27, 2005

Sold

$639,900

$314/sq ft

Apr 2, 2005

Listed

$639,900

$314/sq ft

Public Records

Sep 20, 1994

Sold

$260,000

$128/sq ft

Public Records

Jun 17, 1993

Sold

$265,000

$130/sq ft

Public Records

May 5, 1987

Sold

$190,000

$93/sq ft

Year

Property tax

Land + Additions

Assessment*

2025

$10,318 (+5.2%)

$387,241 + $400,148

$787,389

2024

$9,808 (+2.9%)

$387,241 + $400,148

$787,389

2023

$9,529 (+2.6%)

$379,649 + $392,302

$771,951

2022

$9,285 (+1.9%)

$372,205 + $384,610

$756,815

2021

$9,115 (+1.3%)

$364,907 + $377,069

$741,976

2020

$9,001 (+1.9%)

$357,752 + $369,676

$727,428

2019

$8,831 (+4.7%)

$354,084 + $365,886

$719,970

2018

$8,436 (+4.8%)

$347,142 + $358,712

$705,854

2017

$8,051 (+3.0%)

$333,663 + $344,784

$678,447

2016

$7,819 (−0.6%)

$333,663 + $344,784

$678,447

2015

$7,867 (−0.2%)

$327,121 + $338,024

$665,145

2014

$7,884 (+1.0%)

$315,897 + $326,426

$642,323

2012

$7,802 (+2.9%)

$314,470 + $324,951

$639,421

2011

$7,582 (+0.7%)

$308,304 + $318,580

$626,884

2010

$7,526 (+9.3%)

$302,259 + $312,334

$614,593

2009

$6,888 (−15.4%)

$300,000 + $310,000

$610,000

2008

$8,142

$396,800 + $167,400

$564,200

Tax history for 21474 Cold Spring Ln

Year

Property tax

Land + Additions

Assessment*

2025

$10,318 (+5.2%)

$387,241 + $400,148

$787,389

2024

$9,808 (+2.9%)

$387,241 + $400,148

$787,389

2023

$9,529 (+2.6%)

$379,649 + $392,302

$771,951

2022

$9,285 (+1.9%)

$372,205 + $384,610

$756,815

2021

$9,115 (+1.3%)

$364,907 + $377,069

$741,976

2020

$9,001 (+1.9%)

$357,752 + $369,676

$727,428

2019

$8,831 (+4.7%)

$354,084 + $365,886

$719,970

2018

$8,436 (+4.8%)

$347,142 + $358,712

$705,854

2017

$8,051 (+3.0%)

$333,663 + $344,784

$678,447

2016

$7,819 (−0.6%)

$333,663 + $344,784

$678,447

2015

$7,867 (−0.2%)

$327,121 + $338,024

$665,145

2014

$7,884 (+1.0%)

$315,897 + $326,426

$642,323

2012

$7,802 (+2.9%)

$314,470 + $324,951

$639,421

2011

$7,582 (+0.7%)

$308,304 + $318,580

$626,884

2010

$7,526 (+9.3%)

$302,259 + $312,334

$614,593

2009

$6,888 (−15.4%)

$300,000 + $310,000

$610,000

2008

$8,142

$396,800 + $167,400

$564,200

*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

0.64 Acres

Year renovated

1977

Sq. Ft.

2,037

Year built

1977

Style

Single Family Residential

County

Los Angeles County

APN

8714001008

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

Property details

Parking

Parking / Garage Information
Attached Garage

Interior

Laundry Information
Has Laundry
In Garage

Kitchen Information
Appliances: Counter Top, Double Oven, Dishwasher, Garbage Disposal, Microwave
Has Appliances
Breakfast Nook

Bathroom Information
# of Baths (Full): 2

Cooling Information
Central
Has Cooling

Room Information
Den, Family Room, Living Room, Primary Bedroom

Fireplace Information
Living Room
Has Fireplace

Interior Features
Levels: One
Spa Features: In Ground
Has Spa

Exterior

Exterior Information
Fencing: Wrought Iron
Has Fence
Construction Materials: Stucco

Exterior Features
Pool Features: In Ground
Has Pool

Lot Information
Lot Size Source: Assessor's Data
Lot Features: Lawn, Landscaped, Paved, Sprinkler System, Yard

Property Information
Living Area Source: Assessor's Data
Parcel Number: 8714001008
Has View

Financial

Assesments Information
Assessments: Unknown

Location

School Information
High School District: Walnut Valley Unified

Location Information
Latitude: 33.96901100
Longitude: -117.84020500

Public facts

Beds: 3
Baths: 2.0
Sq. Ft.: 2,037
Stories: —
Lot Size: 0.64 acres
Style: Single Family Residential
Year Built: 1977
Year Renovated: 1977
County: Los Angeles County
APN: 8714001008

Home facts updated by county records on Aug 30, 2026

Other

Miscellaneous Information
Exclusions: Refrigerator, Washer and Dryer
Lease Considered

Listing Information
Days Active in MLS: 111
Continuous Days Active in MLS: 111

Listing Agent Information
List Agent First Name: Mandy
List Agent Last Name: Alavi

Listing Office Information
List Office Name: Global Realty

Selling Agent Information
Buyer Agent First Name: OUT OF AREA
Buyer Agent Last Name: ARCADIA

Selling Office Information
Buyer Office Name: OUT OF AREA OFFICE

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

$1.31M – $1.59M

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Home values near 21474 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
21470 Cold Spring Lane, Diamond Bar, CA 3 Beds \| 3 Baths \| 2378 Sq. Ft.	$1,304,547

Address	Redfin Estimate
21476 Cold Spring Lane, Diamond Bar, CA 3 Beds \| 3 Baths \| 2796 Sq. Ft.	$1,460,093
21462 Cold Spring Lane, Diamond Bar, CA 3 Beds \| - Baths \| 2037 Sq. Ft.	$1,009,783

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

Property information provided by CRMLS when last listed in 2009. This data may not match . Learn more.

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