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.
For sale
Listed by: Wetrust Realty
$1,580,000
21504 Cold Spring Ln, Diamond Bar, CA 91765
4beds
2,712sqft
Single Family Residence
Built in 1977
0.33 Acres Lot
$1,542,900 Zestimate®
$583/sqft
$-- HOA
What's special
Abundant natural lightDesirable downstairs bedroomBright and airy layout
- 21 days |
- 935 |
- 45 |
Likely to sell faster than
Zillow last checked:
Listing updated:
Listed by:
ALLEN SHI DRE #02045433 626-202-8703,
Wetrust Realty
Source: CRMLS,MLS#: WS26113219
Originating MLS: California Regional MLS
Originating MLS: California Regional MLSLoading...
Facts & features
Interior
Bedrooms & bathrooms
- Bedrooms: 4
- Bathrooms: 3
- Full bathrooms: 3
- Main level bathrooms: 1
- Main level bedrooms: 1
Rooms
- Room types: Bathroom, Bedroom, Family Room, Foyer, Kitchen, Laundry, Living Room, Primary Bathroom, Primary Bedroom, Other, Pantry
Bedroom
- Features: Bedroom on Main Level
Bathroom
- Features: Jack and Jill Bath
Other
- Features: Walk-In Closet(s)
Pantry
- Features: Walk-In Pantry
Heating
- Central
Cooling
- Central Air
Appliances
- Laundry: Washer Hookup, Gas Dryer Hookup, Laundry Room
Features
- Bedroom on Main Level, Entrance Foyer, Jack and Jill Bath, Walk-In Pantry, Walk-In Closet(s)
- Has fireplace: Yes
- Fireplace features: Family Room
- Common walls with other units/homes: No Common Walls
Interior area
- Total interior livable area: 2,712 sqft
Property
Parking
- Total spaces: 3
- Parking features: Garage - Attached
- Attached garage spaces: 3
Features
- Levels: Two
- Stories: 2
- Entry location: 1
- Has private pool: Yes
- Pool features: In Ground, Private
- Has view: Yes
- View description: City Lights, Mountain(s)
Lot
- Size: 0.33 Acres
- Features: Back Yard, Front Yard
Details
- Parcel number: 8714002003
- Special conditions: Standard
Construction
Type & style
- Home type: SingleFamily
- Property subtype: Single Family Residence
Condition
- New construction: No
- Year built: 1977
Utilities & green energy
- Sewer: Public Sewer
- Water: Public
Community & HOA
Community
- Features: Sidewalks
Location
- Region: Diamond Bar
Financial & listing details
- Price per square foot: $583/sqft
- Tax assessed value: $883,710
- Annual tax amount: $11,512
- Date on market: 5/30/2026
- Cumulative days on market: 21 days
- Listing terms: Cash,Cash to New Loan,Conventional
- Inclusions: two Tesla Wall charger
Estimated market value
$1,542,900
$1.47M - $1.62M
$4,942/mo
Price history
| Date | Event | Price |
|---|---|---|
| 5/30/2026 | Listed for sale | $1,580,000+125.7%$583/sqft |
Source:  CRMLS #WS26113219 Report a problem | ||
| 1/20/2012 | Sold | $700,000-5.3%$258/sqft |
Source: Public Record Report a problem | ||
| 9/13/2011 | Listed for sale | $738,888+150.9%$272/sqft |
Source: Inland Pacific Properties #C11114133 Report a problem | ||
| 9/26/1995 | Sold | $294,500-3%$109/sqft |
Source: Public Record Report a problem | ||
| 3/28/1995 | Sold | $303,740$112/sqft |
Source: Public Record Report a problem | ||
Public tax history
| Year | Property taxes | Tax assessment |
|---|---|---|
| 2025 | $11,512 +5.6% | $883,710 +2% |
| 2024 | $10,906 +2.9% | $866,383 +2% |
| 2023 | $10,599 +2.6% | $849,396 +2% |
| 2022 | $10,333 +1.9% | $832,743 +2% |
| 2021 | $10,140 +1.3% | $816,416 +1% |
| 2020 | $10,012 | $808,046 +2% |
| 2019 | $10,012 +6.4% | $792,203 +2% |
| 2018 | $9,412 | $776,671 +2% |
| 2017 | $9,412 +4.8% | $761,444 +2% |
| 2016 | $8,982 +3.1% | $746,514 +1.5% |
| 2015 | $8,715 -0.7% | $735,301 +2% |
| 2014 | $8,779 | $720,898 +85.1% |
| 2012 | -- | $389,497 +2% |
| 2011 | -- | $381,861 +0.8% |
| 2010 | -- | $379,008 -0.2% |
| 2009 | -- | $379,909 +2% |
| 2008 | -- | $372,461 +2% |
| 2007 | -- | $365,159 +2% |
| 2006 | -- | $358,000 |
| 2005 | -- | $358,000 +4% |
| 2004 | -- | $344,100 +1.9% |
| 2003 | -- | $337,794 +2% |
| 2002 | -- | $331,171 +4% |
| 2000 | -- | $318,313 |
Find assessor info on the county website
Monthly payment
Est. payment$--/mo
Payment breakdown
Explore the cost of this home by adjusting the details. Changes won't be saved.All calculations are estimates and provided by Zillow, Inc. for informational purposes only. Actual amounts may vary.
HOA fees may include property taxes on listings classified as Co-Ops. Contact the listing agent and/or owner for fee details.
Mortgage interest rates are dependent on a number of factors, including credit score, down payment, and repayment length. Interest rate data provided by Zillow Group Marketplace, Inc. as of 1/1/1970 from various mortgage lenders with which we have lead or other similar arrangements; the Estimated Payment is an average of those rates.
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Climate risks
Neighborhood: 91765
Nearby schools
GreatSchools rating
- 10/10Castle Rock Elementary SchoolGrades: K-5Distance: 0.4 mi
- 10/10South Pointe Middle SchoolGrades: 6-8Distance: 1.8 mi
- 10/10Diamond Bar High SchoolGrades: 9-12Distance: 1 mi
Schools provided by the listing agent
- Elementary: Castle Rock
- Middle: South Pointe
- High: Diamond Bar
Source: CRMLS. This data may not be complete. We recommend contacting the local school district to confirm school assignments for this home.
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- California
- Los Angeles County
- Diamond Bar
- 91765
- 21504 Cold Spring Ln
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