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3000 Windmill Diamond Bar, CA 91765
$5,380,000 8 beds, 8 baths
8, 725 sqft
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Photo of Cindy Lang

Cindy Lang REALTOR® - Sales Associate 310-367-9396 m
949-644-6200 o
Lic#: 02129461
NRDS ID: 205576614
CindyLang@bhhscal.com
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Lic#: 02129461
NRDS ID: 205576614
CindyLang@bhhscal.com
Newport Beach Office
23 Corporate Plaza, Suite 100
Newport Beach, CA 92660
Phone: 949-644-6200
Fax: 949-640-7429
Newport Beach 23 Corporate Plaza, Suite 100
Newport Beach, CA 92660
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Agent Remarks

**THE LAND & LOCATION** 1. PREMIER LOCATION: Perched at 1,100+ ft elevation - one of the highest points in "The Country". 2. VIEWS FOR DAYS: Unobstructed 180° Panoramic Mountain + City Light Views. 3. MASSIVE LOT: 53,055 sqft total. 21,620 sqft of FLAT, usable land. 249.71 ft corner lot frontage. 4. SECURITY: 24-Hour Gated Community. Walnut Valley USD - Diamond Bar HS 10/10. **THE STRUCTURE - BUILT TO LAST** 5. COMMERCIAL-GRADE BUILD: First owner was a commercial developer. Structure + Foundation built to commercial standards. 6. 2,000 SQFT BASEMENT: Includes a reinforced bomb shelter, currently configured as a 120-ft private indoor shooting range. 7. GUEST HOUSE: Detached 2-Bed guest quarters in the side yard. Perfect for family, staff, or income. **THE LEGACY - YOU CANNOT REPLICATE THIS** 8. THE ORCHARD: Backyard is a private botanical sanctuary with 60+ YEAR OLD trees. Avocado, Dragon Fruit, Passion, Citrus, Guava, Macadamia etc 9. WATER FEATURE: Koi Fish Pond + Waterfall for total serenity. 10. 2026 LEGACY RENOVATION: $150,000 Chef's Kitchen Renovation Complete. Featuring Full Miele Appliance Suite, Pot Filler, Double Dishwashers, Zellige Tile & Quartz Island. 5 Bedrooms, Dining & Living Room updated. Move-in ready. This property is for a buyer who values PRIVACY, SECURITY, LAND, and LEGACY.

Listing Details

Property type: Single Family Residence (Single Family)
Status: Active
MLS# TR26147834
List price is $5,380,000
HOA Fee is $350.00
Beds: 8
Baths: 8 (6 full) (1 half)
Living Room fireplaces
Built in 1975
8,725 sqft
1 story
1.22 acres
Lot size: 1.2180
County: Los Angeles
Property style: Custom
Construction: Brick,Block,Drywall,Concrete
Interior features: Beamed Ceilings,Wet Bar,Breakfast Bar,Built-in Features,Brick Walls,Balcony,Block Walls,Ceiling Fan(s),Crown Molding,Cathedral Ceiling(s),Central Vacuum,Dry Bar,Separate/Formal Dining Room,Eat-in Kitchen,High Ceilings,Intercom,In-Law Floorplan,Open Floorplan,Pantry,Pull Down Attic Stairs,Phone System
Exterior features: Lighting,Rain Gutters
Appliances: SixBurnerStove,Built-In Range,Convection Oven,Double Oven,Dishwasher,ENERGY STAR Qualified Appliances,Electric Cooktop,Electric Oven,Electric Range,Freezer,Gas Cooktop,Disposal,Gas Range,Gas Water Heater,Indoor Grill,Ice Maker,Microwave,Refrigerator,Range Hood,Self Cleaning Oven,Vented Exhaust Fan
Parking description: Controlled Entrance,Covered,Driveway,Guest,Gated,Garage Faces Side
Lot description: ZeroToOneUnitAcre,Back Yard,Corner Lot,Drip Irrigation/Bubblers,Flag Lot,Garden,Gentle Sloping,Horse Property,Sprinklers In Rear,Sprinklers In Front,Lawn,Lot Over 40000 Sqft,Landscaped,Level,Paved,Ranch,Sprinklers Manual,Sprinkler System,Street Level
Heating/cooling: Central Air,Dual,Electric,ENERGY STAR Qualified Equipment,Gas,High Efficiency,Wall/Window Unit(s),Zoned
Heating description: Central,ENERGY STAR Qualified Equipment,Fireplace(s),Natural Gas,Zoned
MLS area: 616 - Diamond Bar

Last Updated: 7/13/2026

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This listing belongs to the 616 - Diamond Bar MLS area

The style of this listing is Custom.
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Lat/Long: 33.970261, -117.831408.
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Listing Agent: Jen Huang
Lic#: 02129461
Office Name: Newport Beach

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Total population of , which has changed by % since 1990.
The median age of the population is , while the median age of dwellings is .
Out of households, are families.

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Photo of Cindy Lang

Cindy Lang REALTOR® - Sales Associate 310-367-9396 m
949-644-6200 o
Lic#: 02129461
NRDS ID: 205576614
CindyLang@bhhscal.com
Text Me
Call My Cell
Call My Office
Lic#: 02129461
NRDS ID: 205576614
CindyLang@bhhscal.com

Newport Beach Office
23 Corporate Plaza, Suite 100
Newport Beach, CA 92660
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