Welcome to an exquisitely upgraded single family home in Diamond Bar. It features spacious 3 bedrooms, 2 bathrooms and 1 Den, and nearly an acre lot. Upon entering through the solid mahogany door, this home opens up with high vaulted ceiling accompanied by solid bamboo floorings. The kitchen is fully upgraded with custom cabinets, tile backlash, granite countertop and stainless steel appliances. The home also features a fresh coat of paint with fully upgraded dual pane windows. All the bathrooms have been fully upgraded with new vanity tops along with solid wood vanities. The master bathroom is further upgraded with a SPA like ambiance. Situated in the heart of Diamond Bar, this home is conveniently located close to H-Mart, Castle Rock Elementary and Diamond Bar High School. Don't miss out on this great opportunity to move into Diamond Bar. Make your appointment to see this turnkey home today!
Single-familyProperty Type
1977Year Built
0.87 acresLot Size
$682Est. Price/Sq.Ft.
3 car garageParking
Listed by Deng Ou•DRE #01915804• Universal Elite Inc.
Listed by Shelly Chen•DRE #02082852• Universal Elite Inc.
Contact: devonou38@gmail.com
Bought with Lina Chu•DRE #01431278• REALTY PRODIGY
Welcome to an exquisitely upgraded single family home in Diamond Bar. It features spacious 3 bedrooms, 2 bathrooms and 1 Den, and nearly an acre lot. Upon entering through the solid mahogany door, this home opens up with high vaulted ceiling accompanied by solid bamboo floorings. The kitchen is fully upgraded with custom cabinets, tile backlash, granite countertop and stainless steel appliances. The home also features a fresh coat of paint with fully upgraded dual pane windows. All the bathrooms have been fully upgraded with new vanity tops along with solid wood vanities. The master bathroom is further upgraded with a SPA like ambiance. Not to mention there is a Jacuzzi spa on the rear patio for your leisure time. Situated in the heart of Diamond Bar, this home is conveniently located close to H-Mart, Castle Rock Elementary and Diamond Bar High School. Don't miss out on this great opportunity to move into Diamond Bar. Make your appointment to see this turnkey home today!
Public Records
Dec 5, 1995
Sold
$235,900
$116/sq ft
Public Records
Mar 3, 1994
Sold
$246,000
$121/sq ft
Year
Property tax
Land + Additions
Assessment*
2025
$16,576 (+40.2%)
$800,000 + $534,000
$1,334,000
2024
$11,823 (+2.5%)
$800,000 + $534,000
$1,334,000
2023
$11,540 (+2.1%)
$464,232 + $497,888
$962,120
2022
$11,302 (+1.9%)
$455,130 + $488,126
$943,256
2021
$11,096 (+1.3%)
$446,206 + $478,555
$924,761
2020
$10,955 (+2.0%)
$437,457 + $469,172
$906,629
2019
$10,744 (+4.2%)
$432,972 + $464,362
$897,334
2018
$10,309 (+4.8%)
$424,483 + $455,257
$879,740
2017
$9,835 (+2.9%)
$408,000 + $437,580
$845,580
2016
$9,554 (+131.2%)
$408,000 + $437,580
$845,580
2015
$4,132 (−0.5%)
$400,000 + $429,000
$829,000
2014
$4,154 (+1.3%)
$223,329 + $96,480
$319,809
2012
$4,103 (+2.9%)
$222,320 + $96,044
$318,364
2011
$3,987 (+0.8%)
$217,961 + $94,161
$312,122
2010
$3,954 (+0.5%)
$213,688 + $92,315
$306,003
2009
$3,935 (+2.8%)
$212,091 + $91,626
$303,717
2008
$3,827
$212,595 + $91,844
$304,439
Tax history for 21415 Cold Spring Ln
Year
Property tax
Land + Additions
Assessment*
2025
$16,576 (+40.2%)
$800,000 + $534,000
$1,334,000
2024
$11,823 (+2.5%)
$800,000 + $534,000
$1,334,000
2023
$11,540 (+2.1%)
$464,232 + $497,888
$962,120
2022
$11,302 (+1.9%)
$455,130 + $488,126
$943,256
2021
$11,096 (+1.3%)
$446,206 + $478,555
$924,761
2020
$10,955 (+2.0%)
$437,457 + $469,172
$906,629
2019
$10,744 (+4.2%)
$432,972 + $464,362
$897,334
2018
$10,309 (+4.8%)
$424,483 + $455,257
$879,740
2017
$9,835 (+2.9%)
$408,000 + $437,580
$845,580
2016
$9,554 (+131.2%)
$408,000 + $437,580
$845,580
2015
$4,132 (−0.5%)
$400,000 + $429,000
$829,000
2014
$4,154 (+1.3%)
$223,329 + $96,480
$319,809
2012
$4,103 (+2.9%)
$222,320 + $96,044
$318,364
2011
$3,987 (+0.8%)
$217,961 + $94,161
$312,122
2010
$3,954 (+0.5%)
$213,688 + $92,315
$306,003
2009
$3,935 (+2.8%)
$212,091 + $91,626
$303,717
2008
$3,827
$212,595 + $91,844
$304,439
*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
3
Baths
2
Stories
—
Lot width
—
Lot depth
—
Lot size
0.87 Acres
Year renovated
1977
Sq. Ft.
2,037
Year built
1977
Style
Single Family Residential
County
Los Angeles County
APN
8714005001
Parking Spaces
—
Basement
—
Accessible
—
HOA Dues
—
Garage
—
Features
—
Last updated by owner on Aug 30, 2026.
RL
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
Has Parking
# of Parking Spaces: 3
Interior
Laundry Information
Has Laundry
In Garage
Bathroom Information
# of Baths (Full): 2
Cooling Information
Central
Has Cooling
Room Information
Family Room, Living Room, Main Floor Primary Bedroom, Office
Fireplace Information
Living Room
Has Fireplace
Heating Information
Central Furnace
Has Heating
Interior Features
Entry Level: 1
Entry Location: front door
Levels: One
Main Level Bathrooms: 2
Main Level Bedrooms: 3
Exterior
Exterior Information
Structure Type: House
Exterior Features
Pool Features: None
Has Sprinklers
Lot Information
Elevation Units: Feet
Lot Size Source: Assessor's Data
Lot Features: Landscaped, Sprinkler System
Property Information
Total # of Units: 1
Common Walls: No Common Walls
Living Area Source: Assessor's Data
Parcel Number: 8714005001
Total # of Stories: 1
Year Built Source: Assessor
Utilities
Utilities Information
Sewer: Public Sewer
Water Source: District/Public
Location
Neighborhood Information
Community Features: Curbs, Sidewalks
School Information
High School District: Walnut Valley Unified
Location Information
Latitude: 33.97134200
Longitude: -117.83867100
Directions: Diamond bar blvd off cold spring ln
Zoning: LCR19000*
Public facts
Beds: 3
Baths: 2.0
Sq. Ft.: 2,037
Stories: —
Lot Size: 0.87 acres
Style: Single Family Residential
Year Built: 1977
Year Renovated: 1977
County: Los Angeles County
APN: 8714005001
Home facts updated by county records on Aug 30, 2026
Other
Listing Information
IDX Contact Info: devonou38@gmail.com
Days Active in MLS: 22
Continuous Days Active in MLS: 22
Listing Agent Information
List Agent First Name: Deng
List Agent Last Name: Ou
Co-List Agent First Name: Shelly
Co-List Agent Last Name: Chen
Listing Office Information
List Office Name: Universal Elite Inc.
Co-List Office Name: Universal Elite Inc.
Selling Agent Information
Buyer Agent First Name: Lina
Buyer Agent Last Name: Chu
Co-Buyer Agent First Name: Kai
Co-Buyer Agent Last Name: Xu
Selling Office Information
Buyer Office Name: GAINSPOT INC.
Co-Buyer Office Name: Gainspot Inc.
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
3% chance of being in a wildfire in next 30 years
5/10 Heat Factor
5 days above 98° expected this year, 15 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)
68
50
71
52
73
53
72
53
76
57
81
60
83
61
89
65
86
64
80
59
71
52
69
51
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
$1.32M – $1.60M
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