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21078 Willow Heights

Diamond Bar, CA 91765
Beds5
Baths4.5
Square Ft.3,312
$2,498,000
Listing provided by ALICE LIM

EXPERIENCE THE PINNACLE OF REFINED LIVING IN THIS STUNNING LUXURY RESIDENCE, PERFECTLY SITUATED ON A PREMIUM 7,642 SQFT LOT WITHIN THE EXCLUSIVE GATED COMMUNITY OF WILLOW HEIGHTS AND LOCATED IN THE AWARD-WINNING WALNUT VALLEY UNIFIED SCHOOL DISTRICT. Boasting over $150,00.00 in high-end upgrades and breathtaking… 270-degree panoramic view, this house is a masterpiece of design and functionality. Step through the entry, featuring a powder room and deep under-stair storage, into an expansive, sun-drenched open floor plan characterized by recessed lighting, statement chandeliers and elegant tile flooring. The spacious living room effortlessly compliments the adjoining culinary masterpiece. This chef's kitchen features professional-grade GE Monogram stainless steel appliances, including a 6-burner range, oven, dishwasher, wine cooler and built-in refrigerator. The space is anchored by a massive central island with bar seatings, a spacious walk-in pantry and an adjacent dining area perfect of hosting intimate dinners or grand celebrations. The first floor offers a versatile bedroom with walk-in closet and direct bathroom access, ideal for guests or multi-generational living. Ascent the custom hardwood staircase to find a massive loft that serves as a flexible family room, game room or media center. The primary master suite features a large walk-in closet and a spa-like ensuite with a soaking tub, separate shower and private water closet. Additional quarters include two bedrooms sharing a Jack-and-Jill bathroom, a junior suite with its own private bath, a dedicated office/den and a laundry room equipped with a sink, generous storage & cabinetry. Premium upgrades include plantation shutters, customized designer window treatments, tile in all bathrooms/laundry and hardwood flooring throughout the second level, and 12-wired-camera SimpliSafe security system. The interior flows seamlessly to a California Patio, providing a sophisticated space to enjoy the region's idyllic weather and unobstructed views. The meticulously landscaped backyard is a showstopper, featuring elegant light posts and a unique gate designed for additional vehicles or RV storage. Complete with a 3-bay attached garage and solar. Easy access to 57/60 freeways, retail, supermarkets, parks and trails.

Listing Snapshot
Days online127
Last updatedOct 11, 2026
Property typeSingle Family Residence
Beds5
Full baths4
Square ft.3,312
Lot size0.18 Acres
Year built2015
MLS numberWS-26108557
Additional Details
Bedrooms
Beds Total: 5,Main Level Bedrooms: 1
Bathrooms
Baths Total: 5,Baths Full: 4,Baths Half: 1
Building
Year Built: 2015,Building Area Total: 3312,Living Area: 3312,Stories Total: 2,Levels: Two,Entry Level: 1,Common Walls: No Common Walls,Construction Materials: Other,Property Condition: Turnkey
Lot
Lot Size Acres: 0.18,Lot Size Square Feet: 7642,Lot Features: Sprinklers,Paved,Sprinkler System,View: City Lights
Interior
Interior Features: Built-In Features,Granite Counters,Open Floorplan,Pantry,Recessed Lighting,Storage,Tandem,Kitchen Island,Walk-In Pantry,Flooring: Tile,Wood,Fireplace Features: None,Kitchen Appliances: Built-In Range,Dishwasher,Refrigerator,Tankless Water Heater,Laundry Features: Individual Room,Security Features: Security System,Smoke Detector(s),Automatic Gate
Exterior
Pool Features: None,Spa Features: None
Parking
Garage Spaces: 3,Parking Total: 3,Parking Features: Direct Garage Access,Driveway
Cooling
Cooling: Central Air
Heating
Heating: Central
Community
Community Features: Park,Street Lights,Association Fee: 172.18,Association Fee Frequency: Monthly
Utilities
Utilities: Sewer Connected,Water Connected,Electricity Connected,Natural Gas Connected,Sewer: Public Sewer,Water Source: Public,Green Energy Generation: Solar

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Listing information © 2026 California Regional Multiple Listing Service (CRMLS) (via the CSMAR data share). All rights reserved. Information deemed reliable but not guaranteed. IDX information is provided exclusively for consumers’ personal, non-commercial use.
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