Listed by ALLEN SHI, Wetrust Realty, (626) 587-4866
21504 Cold Spring Ln
Diamond Bar, CA 91765
- 4 Beds
- 3 Baths
- 2,712 sqft (on 0.33 acres)
4 Beds
3 Baths
2,712 sqft
(on 0.33 acres)
We estimate this home will sell faster than 83% nearby.
Local Information
-- mins to
Description
Enjoy beautiful mountain views by day and sparkling city lights by night from this lovely home nestled in the desirable hills of Diamond Bar, complete with a private pool perfect for relaxing or entertaining. Energy-efficient upgrades include fully paid-off solar, two Tesla EV charging stations, an electric water heater, a whole-house water softener system, newer roof, and newer A/C. The bright and airy layout features soaring high ceilings in the living room, abundant natural light, a desirable downstairs bedroom, and a spacious 3-car garage. Located within the award-winning Walnut Valley Unified School District with top-rated 10/10 schools, and just minutes from Diamond Hills Plaza featuring H Mart, popular dining, shopping, and everyday conveniences. NO HOA.
We estimate this home will sell faster than 83% nearby.
Home Highlights
Parking
3 Car Garage
Outdoor
Pool
A/C
Heating & Cooling
HOA
None
Price/Sqft
$583
Listed
43 days ago
Home Details for 21504 Cold Spring Ln
|
|---|
Interior Details Number of Rooms: 10Types of Rooms: Master Bedroom, Bedroom, Bathroom, Family Room, Foyer, Kitchen, Laundry, Living Room, Other, Pantry |
Beds & Baths Number of Bedrooms: 4Main Level Bedrooms: 1Number of Bathrooms: 3Number of Bathrooms (full): 3Number of Bathrooms (main level): 1 |
Dimensions and Layout Living Area: 2712 Square Feet |
Appliances & Utilities Laundry: Washer Hookup,Gas Dryer Hookup,Laundry Room |
Heating & Cooling Heating: CentralHas CoolingAir Conditioning: Central AirHas HeatingHeating Fuel: Central |
Fireplace & Spa Fireplace: Family RoomHas a Fireplace |
Windows, Doors, Floors & Walls Common Walls: No Common Walls |
Levels, Entrance, & Accessibility Stories: 2Number of Stories: 2Levels: TwoEntry Location: 1 |
View Has a ViewView: City Lights, Mountain(s) |
|
|---|
Exterior Home Features Has a Private Pool |
Parking & Garage Number of Garage Spaces: 3Number of Covered Spaces: 3Has a GarageHas an Attached GarageParking Spaces: 3Parking: Garage Attached |
Pool Pool: In Ground, PrivatePool |
Frontage Not on Waterfront |
Water & Sewer Sewer: Public Sewer |
Surface & Elevation Elevation Units: Feet |
|
|---|
Cumulative Days on Market: 34Days on Market: 43 |
|
|---|
Year Built Year Built: 1977 |
Property Type / Style Property Type: ResidentialProperty Subtype: Single Family ResidenceStructure Type: HouseArchitecture: House |
Building Not a New ConstructionNot Attached PropertyNo Additional Parcels |
Property Information Included in Sale: two Tesla Wall chargerParcel Number: 8714002003 |
|
|---|
Price List Price: $1,580,000Price Per Sqft: $583 |
|
|---|
MLS Status: Active |
|
|---|
Direction & Address City: Diamond Bar |
School Information Elementary School: Castle RockJr High / Middle School: South PointeHigh School: Diamond BarHigh School District: Walnut Valley Unified |
|
|---|
Listing Agent Listing ID: WS26113219 |
|
|---|
Community Features: SidewalksNot Senior Community |
|
|---|
Association for this Listing: California Regional MLSHOA Fee: No HOA Fee |
|
|---|
Lot Area: 0.33 acres |
|
|---|
Special Conditions: Standard |
|
|---|
Listing Terms: Cash, Cash to New Loan, Conventional |
|
|---|
Mls Number: WS26113219Living Area Range Units: Square FeetAttribution Contact: 626-202-8703Common Interest: NoneUniversal Property Id: US-06037-N-8714002003-R-N |
|
|---|
SidewalksSource Internet Entire Listing Display |
Last check for updates: about 4 hours ago
Listing Provided by: ALLEN SHI DRE #02045433, (626) 202-8703
Wetrust Realty
Originating MLS: California Regional MLS
Source: CRMLS, MLS#WS26113219

Also Listed on CRMLS.
Market trends in Diamond Bar
Last updated June 2026
Avg. sale price
$1.09M
$1.58KMoM
Sale-to-List Price
99.8%
Price per sq ft
$554
$7MoM
Available listings
198
34MoM
Price History for 21504 Cold Spring Ln
| Date | Price | Event | Source |
|---|---|---|---|
| 05/30/2026 | $1,580,000 | Listed For Sale | CRMLS #WS26113219 |
| 01/20/2012 | $700,000 | Sold | N/A |
| 09/13/2011 | $738,888 | Listed For Sale | Agent Provided |
| 09/26/1995 | $294,500 | Sold | N/A |
| 03/28/1995 | $303,740 | Sold | N/A |
Similar Homes You May Like
New Listings near 21504 Cold Spring Ln
Property Tax and Assessment
| Year | 2025 |
|---|---|
| Tax | $11,512 |
| Assessment | $883,710 |
Home facts updated by county records
Comparable Sales for 21504 Cold Spring Ln
Address | Distance | Property Type | Sold Price | Sold Date | Bed | Bath | Sqft |
|---|---|---|---|---|---|---|---|
0.16 | Single-Family Home | $1,390,000 | 09/23/25 | 4 | 3 | 2,712 | |
0.08 | Single-Family Home | $1,475,000 | 10/14/25 | 4 | 3 | 3,026 | |
0.13 | Single-Family Home | $1,450,000 | 08/20/25 | 4 | 3 | 2,712 | |
0.20 | Single-Family Home | $1,505,000 | 05/28/26 | 4 | 3 | 2,712 | |
0.19 | Single-Family Home | $1,518,888 | 01/16/26 | 4 | 2.5 | 2,397 | |
0.11 | Single-Family Home | $1,330,000 | 05/14/26 | 4 | 3 | 2,037 | |
0.11 | Single-Family Home | $1,175,000 | 09/03/25 | 3 | 3 | 2,378 | |
0.19 | Single-Family Home | $1,680,000 | 05/12/26 | 4 | 3 | 2,697 | |
0.32 | Single-Family Home | $1,530,000 | 07/18/25 | 4 | 3 | 2,712 | |
0.24 | Single-Family Home | $1,250,000 | 03/25/26 | 4 | 3 | 2,380 |
Nearby homes
Get a sense of prices in the area by checking nearby homes.Assigned Schools
These are the assigned schools for 21504 Cold Spring Ln.
What Locals Say about Diamond Bar
At least 313 Trulia users voted on each feature.
89 % Say it's dog friendly
88 % Say there are sidewalks
85 % Say car is needed
80 % Say streets are well-lit
78 % Say parking is easy
77 % Say yards are well-kept
74 % Say it's quiet
66 % Say there's holiday spirit
65 % Say people would walk alone at night
64 % Say there's wildlife
60 % Say they plan to stay for at least 5 years
50 % Say kids play outside
48 % Say it's walkable to grocery stores
47 % Say neighbors are friendly
45 % Say it's walkable to restaurants
25 % Say there are community events
Sourced by Trulia users. Learn more about our methodology.
LGBTQ Local Legal Protections
LGBTQ Local Legal Protections
ALLEN SHI, Wetrust Realty
Agent Phone: (626) 202-8703

The multiple listing data appearing on this website, or contained in reports produced therefrom, is owned and copyrighted by California Regional Multiple Listing Service, Inc. ("CRMLS") and is protected by all applicable copyright laws. Information provided is for viewer's personal, non-commercial use and may not be used for any purpose other than to identify prospective properties the viewer may be interested in purchasing. All listing data, including but not limited to square footage and lot size is believed to be accurate, but the listing Agent, listing Broker and CRMLS and its affiliates do not warrant or guarantee such accuracy. The viewer should independently verify the listed data prior to making any decisions based on such information by personal inspection and/or contacting a real estate professional.
Based on information from California Regional Multiple Listing Service, Inc. as of 2026-07-12 01:15:19 PDT and /or other sources. All data, including all measurements and calculations of area, is obtained from various sources and has not been, and will not be, verified by broker or MLS. All information should be independently reviewed and verified for accuracy. Properties may or may not be listed by the office/agent presenting the information
Based on information from California Regional Multiple Listing Service, Inc. as of 2026-07-12 01:15:19 PDT and /or other sources. All data, including all measurements and calculations of area, is obtained from various sources and has not been, and will not be, verified by broker or MLS. All information should be independently reviewed and verified for accuracy. Properties may or may not be listed by the office/agent presenting the information
21504 Cold Spring Ln, Diamond Bar, CA 91765 is a 4 bedroom, 3 bathroom, 2,712 sqft single-family home built in 1977. This property is currently available for sale and was listed by CRMLS on May 30, 2026. The MLS # for this home is MLS# WS26113219.

