21477 Cold Spring Ln, Diamond Bar, CA 91765

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Off market aug 2022 for $1M

$1,419,771

Est. refi paymentEst. refi $7,097/mo

•

2,796

sq ft

21477 Cold Spring Ln, Diamond Bar, CA 91765

About this home

THE LARGEST OF THE MASTER SERIES DIAMOND RIDGE HOMES IN DIAMOND BAR WITH POOL & SPA. . ALMOST 2800 sqft, 4 BEDROOMS, (ONE BEDROOM DOWNSTAIRS) WITH 3 FULL BATHS (ONE FULL BATH DOWNSTAIRS). LARGE PRIMARY BEDROOM WITH ROMAN TUB. A FORMAL DINING ROOM, FORMAL LIVING ROOM, LARGE OPEN GAME ROOM, KITCHEN WITH BREAFAST NOOK, STEP-DOWN FAMILY ROOM. INDOOR LAUNDRY - THREE CAR GARAGE. FLOOR PLAN OFFERS HIGH CEILINGS AND CENTER STAIRCASE. PROPERTY UPGRADES INCLUDE A NEWER HVAC SYSTEM & TILE ROOF. THE LOCATION IS PERFECT WITH IN THE TOP RANKED WALNUT VALLEY SCHOOL DISTRICT, MINUTES TO THE FREEWAY TO ORANGE COUNTY OR LA, WITH IN WALKING DISTANCE TO STARBUCKS. . DONT MISS THIS ESTATE LIQUIDATION SALE.

Single-familyProperty Type

1977Year Built

0.37 acresLot Size

$508Est. Price/Sq.Ft.

3 car garageParking

Listed by Larry Black •DRE #00674504 • Better Homes and Gardens Real Estate The Heritage Group

Bought with ZHIFEI DENG •DRE #02177211 • Pinnacle Real Estate Group

Redfin checked: 2 minutes ago

•Source:CRMLS #TR22152161

Redfin Estimate

$1,419,771

$370K since sold in August 2022$7,000 since September

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 0.6% higher than the average sale price ($1.41M) 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 MAY 28, 2026
$1,505,000
B
4 beds3 baths2,712 sq ft
3249 Hawkwood Rd, Diamond Bar, CA 91765
SOLD SEP 4, 2026
$1,265,000
C
4 beds2.5 baths2,640 sq ft
3106 Cherrydale, Diamond Bar, CA 91765
New Star Realty & Inv.
SOLD OCT 6, 2026
$1,275,000
D
4 beds3 baths3,019 sq ft
3581 Hawkwood, Diamond Bar, CA 91765
The Agency
SOLD MAY 12, 2026
$1,680,000
E
4 beds3 baths2,697 sq ft
21535 Chirping Sparrow, Diamond Bar, CA 91765
BOUGHT WITH REDFIN SEP 14, 2026
$1,360,000
F
4 beds3 baths2,404 sq ft
20111 Evening Breeze Dr, Walnut, CA 91789

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Earn from this home

Sell

$568,779

Est. take-home

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Refinance

Est. cash available

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Rent

$4,026/mo

Redfin rental estimate

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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
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OPEN TODAY, 1PM TO 4PM
$750,000
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2119 Dublin Ln #2, Diamond Bar, CA 91765
$399,000
2 beds1 bath850 sq ft
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$399,000
2 beds1 bath850 sq ft
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Pinnacle Real Estate Group
OPEN TODAY, 12PM TO 3PM
$1,175,000
4 beds2.5 baths1,829 sq ft
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OPEN TODAY
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$4,200,000
5 beds6 baths6,257 sq ft
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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

Sale history for 21477 Cold Spring Ln

Year

Property tax

Land + Additions

Assessment*

2025

$13,809 (+5.0%)

$839,839 + $274,427

$1,114,266

2024

$13,154 (+2.5%)

$823,372 + $269,047

$1,092,419

2023

$12,838 (+269.1%)

$807,228 + $263,772

$1,071,000

2022

$3,478 (+2.3%)

$791,400 + $258,600

$1,050,000

2021

$3,401 (+1.2%)

$34,765 + $208,941

$243,706

2020

$3,359 (+1.8%)

$34,084 + $204,845

$238,929

2019

$3,299 (+6.0%)

$33,735 + $202,745

$236,480

2018

$3,114 (+4.4%)

$33,074 + $198,770

$231,844

2017

$2,983 (+3.9%)

$31,791 + $191,052

$222,843

2016

$2,872 (−0.5%)

$31,791 + $191,052

$222,843

2015

$2,885 (−0.4%)

$31,168 + $187,306

$218,474

2014

$2,896 (+1.4%)

$30,099 + $180,880

$210,979

2012

$2,856 (+3.0%)

$29,963 + $180,063

$210,026

2011

$2,773 (+0.9%)

$29,376 + $176,533

$205,909

2010

$2,748 (+0.8%)

$28,800 + $173,072

$201,872

2009

$2,726 (+3.0%)

$28,585 + $171,779

$200,364

2008

$2,647

$28,653 + $172,188

$200,841

Tax history for 21477 Cold Spring Ln

Year

Property tax

Land + Additions

Assessment*

2025

$13,809 (+5.0%)

$839,839 + $274,427

$1,114,266

2024

$13,154 (+2.5%)

$823,372 + $269,047

$1,092,419

2023

$12,838 (+269.1%)

$807,228 + $263,772

$1,071,000

2022

$3,478 (+2.3%)

$791,400 + $258,600

$1,050,000

2021

$3,401 (+1.2%)

$34,765 + $208,941

$243,706

2020

$3,359 (+1.8%)

$34,084 + $204,845

$238,929

2019

$3,299 (+6.0%)

$33,735 + $202,745

$236,480

2018

$3,114 (+4.4%)

$33,074 + $198,770

$231,844

2017

$2,983 (+3.9%)

$31,791 + $191,052

$222,843

2016

$2,872 (−0.5%)

$31,791 + $191,052

$222,843

2015

$2,885 (−0.4%)

$31,168 + $187,306

$218,474

2014

$2,896 (+1.4%)

$30,099 + $180,880

$210,979

2012

$2,856 (+3.0%)

$29,963 + $180,063

$210,026

2011

$2,773 (+0.9%)

$29,376 + $176,533

$205,909

2010

$2,748 (+0.8%)

$28,800 + $173,072

$201,872

2009

$2,726 (+3.0%)

$28,585 + $171,779

$200,364

2008

$2,647

$28,653 + $172,188

$200,841

*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

0.37 Acres

Year renovated

1977

Sq. Ft.

2,796

Year built

1977

Style

Single Family Residential

County

Los Angeles County

APN

8714004005

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 - Two Door
Has Parking
# of Parking Spaces: 3

Interior

Laundry Information
Has Laundry
Individual Room

Kitchen Information
Breakfast Nook
Tile Counters

Bathroom Information
# of Baths (Full): 3

Cooling Information
Central
Has Cooling

Room Information
Bonus Room, Family Room, Formal Entry, Kitchen, Laundry, Living Room, Main Floor Bedroom, Primary Bathroom, Primary Bedroom, Separate Family Room

Fireplace Information
Family Room
Has Fireplace

Flooring Information
Carpet, Tile

Heating Information
Central Furnace
Has Heating

Interior Features
Entry Level: 1
Entry Location: GROUND
High Ceilings (9 Feet+)
Levels: Two
Main Level Bathrooms: 1
Main Level Bedrooms: 1
Security Features: Carbon Monoxide Detector(s), Security System, Smoke Detector
Spa Features: Private, Gunite, In Ground
Has Spa

Exterior

Exterior Information
Structure Type: House
Roof: Tile
Fencing: Chain Link, Fair Condition, Needs Repair, Wrought Iron
Has Fence
Construction Materials: Stucco

Foundation Information
Foundation Details: Concrete Slab

Exterior Features
Patio And Porch Features: Patio
Has Patio
Pool Features: Private, Gunite, Heated, Heated with Gas, In Ground
Has Pool

Lot Information
Elevation Units: Feet
Lot Size Source: Assessor's Data
Lot Features: Front Yard, Lot 10000-19999 Sqft

Property Information
Total # of Units: 1
Common Walls: No Common Walls
Living Area Source: Assessor's Data
Parcel Number: 8714004005
Total # of Stories: 2
Year Built Source: Assessor

Financial

Assesments Information
Assessments: Unknown

Utilities

Utilities Information
Sewer: Public Sewer, Sewer Paid
Cable Available, Sewer Connected
Water Source: District/Public

Location

Neighborhood Information
Community Features: Sidewalks, Suburban

School Information
High School: Diamond Bar
High School District: Walnut Valley Unified
High School 2: DIABAR

Location Information
Latitude: 33.96879700
Longitude: -117.83970500
Other Subdivision Name: DIAMOND RIDGE
Directions: COLD SPRINGS & DIAMOND BAR BLVD... DIAMOND RIDGE
Zoning: LCR19000*

Public facts

Beds: 3
Baths: 3.0
Sq. Ft.: 2,796
Stories: —
Lot Size: 0.37 acres
Style: Single Family Residential
Year Built: 1977
Year Renovated: 1977
County: Los Angeles County
APN: 8714004005

Home facts updated by county records on Oct 7, 2026

Other

Listing Information
Days Active in MLS: 12
Continuous Days Active in MLS: 12

Listing Agent Information
List Agent First Name: Larry
List Agent Last Name: Black

Listing Office Information
List Office Name: Heritage Real Estate

Selling Agent Information
Buyer Agent First Name: ZHIFEI
Buyer Agent Last Name: DENG

Selling Office Information
Buyer Office Name: Pinnacle Real Estate Group

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

5% chance of being in a wildfire in next 30 years

5/10 Heat Factor

6 days above 98° expected this year, 18 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

$1.35M – $1.63M

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Home values near 21477 Cold Spring Ln

Data from public records.

Address	Redfin Estimate
21478 Cold Spring Ln, Diamond Bar, CA 3 Beds \| 3 Baths \| 2712 Sq. Ft.	$1,338,548
21472 Cold Spring Ln, Diamond Bar, CA 4 Beds \| - Baths \| 2712 Sq. Ft.	$1,428,921

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

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 21477 Cold Spring Ln

Tax history for 21477 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 21477 Cold Spring Ln

More real estate resources