21211 Cold Spring Ln, Diamond Bar, CA 91765

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Off Market Jun 2025 for $1M

$1,033,951

Est. refi paymentEst. refi $5,493/mo

•

1,288

sq ft

21211 Cold Spring Ln, Diamond Bar, CA 91765

About this home

Nestled in a highly sought-after pocket of Diamond Bar within the top-rated Walnut Valley Unified School District, this thoughtfully renovated single-story home offers modern comforts with timeless appeal. This 4 bed 2 bath ranch-style 1960’s home has been completely updated inside and out, blending charm and functionality across 1,288 square feet of living space on a spacious 7,830 square foot lot. Step inside to find wide plank LVP flooring throughout and an open floor plan. The living room has a redone wood burning fireplace that flows easily to the dining nook with built-in bench seating and extra storage. Enjoy al fresco dining off the back patio on warm California summer nights, with a beautifully landscaped backyard accented with citrus trees. The heart of the home features a beautifully remodeled kitchen with white soft-close shaker cabinets, sleek quartz countertops, a farmhouse-style stainless sink, and bar seating that opens to the dining and living areas. Both bathrooms have been stylishly renovated, and smart home touches such as a Nest system and security cameras offer enhanced comfort and security. Other notable upgrades include a newer composition roof, interior and exterior paint, newer ducting, furnace, water heater, ABS sewer line, and PEX plumbing runs throughout for peace of mind. Located in a walkable neighborhood close to local restaurants and everyday conveniences, this move-in-ready home is the perfect blend of quality updates and California lifestyle living.

Single-familyProperty Type

1964Year Built

7,830 sq ftLot Size

$803Est. Price/Sq.Ft.

2 car garageParking

Listed by Ashley Hyde •DRE #01996461 • Compass

Contact: 949-520-0809

Bought with Ashley Hyde •DRE #01996461 • Compass

Redfin checked: 2 minutes ago

•Source:CRMLS #OC25092519

Redfin Estimate

$1,033,951

$6,749 since sold in June 2025$10K since August

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 8.9% higher than the average sale price ($950K) of 6 comparable homes.

SOLD JUL 31, 2026
$875,000
A
3 beds2 baths1,300 sq ft
21245 Cold Spg, Diamond Bar, CA 91765
SOLD JAN 21, 2026
$980,000
B
4 beds2 baths1,288 sq ft
2819 Castle Rock, Diamond Bar, CA 91765
SOLD JUL 31, 2026
$975,000
C
3 beds2 baths1,300 sq ft
2606 Castle Rock Rd, Diamond Bar, CA 91765
Synergy Real Estate
SOLD FEB 27, 2026
$1,030,000
D
4 beds2 baths1,756 sq ft
2710 Castle Rock Rd, Diamond Bar, CA 91765
SOLD FEB 26, 2026
$880,000
E
3 beds2 baths1,280 sq ft
2632 Castle Rock, Diamond Bar, CA 91765
SOLD JUL 16, 2026
$958,600
F
3 beds2 baths1,372 sq ft
2127 Evergreen Springs Dr, Diamond Bar, CA 91765
Keller Williams Premier Prop

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Earn from this home

Sell

$162,851

Est. take-home

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Refinance

Est. cash available

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Rent

$3,272/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

98.5%

0.6% MoM

Median sale price

$1.1M

$10K MoM

Avg. days on market

43d

1 days MoM

Recently sold homes

100

5 MoM

New listings for sale

OPEN SAT, 11AM TO 2PM
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OPEN SAT, 1PM TO 4PM
$1,380,000
4 beds3 baths2,074 sq ft
1553 High Blf, Diamond Bar, CA 91765
NEW 8 HRS AGO
$1,699,000
4 beds3 baths3,802 sq ft
24030 Shotgun Ln, Diamond Bar, CA 91765
NEW 9 HRS AGO
$1,299,000
5 beds4 baths2,116 sq ft
1537 Meadow Gln, Diamond Bar, CA 91765
FOR SALE BY OWNER
$425,000
2 beds1 bath850 sq ft
22801 Hilton Head Dr, Diamond Bar, CA 91765
OPEN SAT, 12PM TO 4PM
$1,680,000
5 beds4 baths3,100 sq ft
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OPEN SAT, 11AM TO 2PM
$946,000
3 beds4 baths1,700 sq ft
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$1,195,000
3 beds2.5 baths2,031 sq ft
24237 Seagreen Dr, Diamond Bar, CA 91765
$1,350,000
5 beds3 baths2,585 sq ft
24435 Nan Ct, Diamond Bar, CA 91765
COMING SOON
$585,000
2 beds2.5 baths1,012 sq ft
1109 Golden Springs Dr Unit D, Diamond Bar, CA 91765
See all

Provided by Redfin

Sale history for 21211 Cold Spring Ln

Year

Property tax

Land + Additions

Assessment*

2025

$11,266 (+58.4%)

$700,000 + $199,800

$899,800

2024

$7,113 (+2.4%)

$700,000 + $199,800

$899,800

2023

$6,945 (−18.7%)

$240,359 + $320,883

$561,242

2022

$8,542 (+4.7%)

$546,822 + $137,797

$684,619

2021

$8,162 (+23.8%)

$408,000 + $283,254

$691,254

2020

$6,593 (+1.9%)

$525,589 + $132,448

$658,037

2019

$6,468 (+4.4%)

$224,176 + $299,277

$523,453

2018

$6,194 (+4.8%)

$219,781 + $293,409

$513,190

2017

$5,912 (+2.9%)

$211,248 + $282,016

$493,264

2016

$5,744 (−0.6%)

$211,248 + $282,016

$493,264

2015

$5,779 (−0.1%)

$207,106 + $276,487

$483,593

2014

$5,786 (+206.5%)

$200,000 + $267,000

$467,000

2012

$1,888 (+3.0%)

$57,474 + $82,020

$139,494

2011

$1,832 (+1.0%)

$56,348 + $80,412

$136,760

2010

$1,813 (+0.7%)

$55,244 + $78,836

$134,080

2009

$1,800 (+3.1%)

$54,832 + $78,247

$133,079

2008

$1,745

$54,963 + $78,433

$133,396

Tax history for 21211 Cold Spring Ln

Year

Property tax

Land + Additions

Assessment*

2025

$11,266 (+58.4%)

$700,000 + $199,800

$899,800

2024

$7,113 (+2.4%)

$700,000 + $199,800

$899,800

2023

$6,945 (−18.7%)

$240,359 + $320,883

$561,242

2022

$8,542 (+4.7%)

$546,822 + $137,797

$684,619

2021

$8,162 (+23.8%)

$408,000 + $283,254

$691,254

2020

$6,593 (+1.9%)

$525,589 + $132,448

$658,037

2019

$6,468 (+4.4%)

$224,176 + $299,277

$523,453

2018

$6,194 (+4.8%)

$219,781 + $293,409

$513,190

2017

$5,912 (+2.9%)

$211,248 + $282,016

$493,264

2016

$5,744 (−0.6%)

$211,248 + $282,016

$493,264

2015

$5,779 (−0.1%)

$207,106 + $276,487

$483,593

2014

$5,786 (+206.5%)

$200,000 + $267,000

$467,000

2012

$1,888 (+3.0%)

$57,474 + $82,020

$139,494

2011

$1,832 (+1.0%)

$56,348 + $80,412

$136,760

2010

$1,813 (+0.7%)

$55,244 + $78,836

$134,080

2009

$1,800 (+3.1%)

$54,832 + $78,247

$133,079

2008

$1,745

$54,963 + $78,433

$133,396

*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

7,830 Sq. Ft.

Year renovated

1964

Sq. Ft.

1,288

Year built

1964

Style

Single Family Residential

County

Los Angeles County

APN

8285018023

Parking Spaces

—

Basement

—

Accessible

—

HOA Dues

—

Garage

—

Features

—

Last updated by owner on Aug 31, 2026.

RLM

Low/Medium Density Residential District

The RLM zoning district is intended primarily for existing subdivided areas developed with detached single-family dwellings. The maximum allowed density for new residential subdivisions within this zoning district will be five dwellings per gross acre. The RLM zoning district is consistent with the low density residential land use category of the general plan.

Permitted uses

Include but are not limited to:

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
Direct Garage Access, Driveway - Concrete, Driveway Up Slope From Street, Garage, Garage - Front Entry, Off Street
Has Parking
# of Parking Spaces: 2

Interior

Laundry Information
Has Laundry
Dryer Included, In Garage, Washer Included

Kitchen Information
Appliances: Dishwasher, Electric Range, Microwave, Recirculated Exhaust Fan, Self Cleaning Oven, Water Heater Unit
Has Appliances
Area, Breakfast Counter / Bar
Quartz Counters, Remodeled Kitchen, Self-closing cabinet doors, Self-closing drawers

Bathroom Information
# of Baths (Full): 2
Bathtub, Shower in Tub, Main Floor Full Bath, Remodeled, Walk-in shower

Cooling Information
Central
Has Cooling

Room Information
All Bedrooms Down, Attic, Kitchen, Living Room, Main Floor Bedroom, Main Floor Primary Bedroom, Primary Suite

Fireplace Information
Living Room, Wood
Has Fireplace

Flooring Information
Vinyl

Heating Information
Central Furnace
Has Heating

Interior Features
Energy Star Doors, Sliding Glass Door(s)
Entry Level: 1
Entry Location: front
Ceiling Fan, Open Floor Plan, Quartz Counters, Recessed Lighting
Levels: One
Main Level Bathrooms: 2
Main Level Bedrooms: 4
Security Features: Carbon Monoxide Detector(s), Smoke Detector
Window Features: Custom Covering, Double Pane Windows, Energy Star Windows, Screens

Exterior

Exterior Information
Structure Type: House
Roof: Composition
Fencing: Wood
Has Fence
Construction Materials: Stucco, Wood

Foundation Information
Foundation Details: Concrete Slab

Exterior Features
Rain Gutters
Patio And Porch Features: Concrete, Patio, Patio Open
Has Patio
Pool Features: None

Lot Information
Elevation Units: Feet
Lot Size Source: Assessor's Data
Lot Features: 0-1 Unit/Acre, Back Yard, Front Yard, Landscaped, Lawn, Walkstreet, Yard

Property Information
Total # of Units: 1
Accessibility Features: 2+ Access Exits, Entry Slope less than 1 foot, No Interior Steps
Common Walls: No Common Walls
Direction Faces: Southwest
Living Area Source: Assessor's Data
Parcel Number: 8285018023
Property Condition: Turnkey, Updated/Remodeled
Total # of Stories: 1
Year Built Source: Assessor
Property ADU: No

Utilities

Utilities Information
Electric: Standard
Sewer: Public Sewer
Electricity Connected, Natural Gas Connected, Sewer Connected, Water Connected
Water Source: District/Public

Location

Neighborhood Information
Community Features: Sidewalks, Storm Drains, Street Lighting

School Information
Elementary School: Evergreen
Middle Or Junior School: South Pointe
High School: Diamond Bar
High School District: Walnut Valley Unified
Elementary School 2: EVERGR
Middle Or Junior School 2: SOUPOI
High School 2: DIABAR

Location Information
Latitude: 33.97514100
Longitude: -117.84231200
Directions: Going north on S Brea Canyon Rd, turn right on Cold Spring Ln and property is second on the left
Road Frontage Type: Access via City Streets
Road Surface Type: Paved
Zoning: LCR171/2

Public facts

Beds: 4
Baths: 2.0
Sq. Ft.: 1,288
Stories: —
Lot Size: 7,830 square feet
Style: Single Family Residential
Year Built: 1964
Year Renovated: 1964
County: Los Angeles County
APN: 8285018023

Home facts updated by county records on Aug 31, 2026

Other

Miscellaneous Information
Exclusions: refrigerator (none present)

Listing Information
IDX Contact Info: 949-520-0809
Days Active in MLS: 17
Continuous Days Active in MLS: 17

Team Information
Listing Team: The Hyde Group
Buyer Team: The Hyde Group

Listing Agent Information
List Agent First Name: Ashley
List Agent Last Name: Hyde

Listing Office Information
List Office Name: Compass

Selling Agent Information
Buyer Agent First Name: Ashley
Buyer Agent Last Name: Hyde

Selling Office Information
Buyer Office Name: Compass

Around this home

Schools

Castle Rock Elementary School

Public K-5 • Assigned • 0.2mi

10/10

South Pointe Middle School

Public 6-8 • Assigned • 1.2mi

10/10

Diamond Bar High School

Public 9-12 • Assigned • 0.5mi

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

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

$983,000 – $1.19M

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Home values near 21211 Cold Spring Ln

Data from public records.

Address	Redfin Estimate
21253 Cold Spring Lane, Diamond Bar, CA 3 Beds \| 2 Baths \| 1252 Sq. Ft.	$916,992
21231 Cold Spring Lane, Diamond Bar, CA 3 Beds \| 2 Baths \| 1280 Sq. Ft.	$887,791

Address	Redfin Estimate
21245 Cold Spring Lane, Diamond Bar, CA 3 Beds \| 2 Baths \| 1300 Sq. Ft.	$899,708
21225 Cold Spring Lane, Diamond Bar, CA 3 Beds \| 2 Baths \| 1415 Sq. Ft.	$881,052

Address	Redfin Estimate
21239 Cold Spring Lane, Diamond Bar, CA 3 Beds \| 2 Baths \| 1280 Sq. Ft.	$887,621
21217 Cold Spring Lane, Diamond Bar, CA 3 Beds \| 2 Baths \| 1798 Sq. Ft.	$928,562

Property information provided by CRMLS when last listed in 2025. 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 21211 Cold Spring Ln

Tax history for 21211 Cold Spring Ln

Public record

Property details

Around this home

Schools

Lifestyle

Local insights from Redfin agents

Climate risks

Historical weather

Sun exposure

Nearby similar homes

New listings for sale in 91765

Home values near 21211 Cold Spring Ln

More real estate resources