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Striking panoramic-view residence set within the prestigious "Diamond Ridge Estates "community of Diamond Bar and located in the award-winning Walnut Valley Unified School District. Designed for both refined living and grand-scale entertaining, this exceptional 4-bedroom, 3.5-bath home makes an immediate statement with an elegant double-door entry opening to a dramatic grand foyer, soaring ceilings, and an abundance of natural light. The formal living room offers an impressive sense of volume, while the cathedral-ceiling dining room creates a sophisticated setting for unforgettable gatherings. The thoughtfully designed floor plan includes a desirable main-level en-suite bedroom with a private bath, ideal for guests, extended family, or multigenerational living. At the heart of the home, the open-concept kitchen features a generous center island and flows seamlessly into the spacious family room with high ceilings and a cozy fireplace, creating an inviting setting for everyday living and entertaining. Upstairs, the expansive primary suite offers two spacious walk-in closets and a well-appointed bath with a separate shower and soaking tub. Additional highlights include an individual laundry room with ample built-in cabinetry, fresh interior and exterior paint, new waterproof wood flooring throughout much of the renovated interior, and custom tile flooring at the entry and kitchen. Outdoors, the property continues to impress with a generously sized front yard, an expansive private driveway offering ample parking, and a charming sitting area beyond the low decorative iron gate—perfect for relaxing and enjoying the peaceful surroundings. The spacious backyard with patio provides another wonderful setting for entertaining while taking in spectacular canyon and mountain views. Elegant slate fountain with a serene pond and cascading waterfall, creating a sophisticated outdoor focal point. Conveniently located near the 60 and 57 Freeways, this distinctive Diamond Ridge home offers an exceptional combination of location, lifestyle, flexibility, and breathtaking scenery.
| Address |
20508 Crestline Dr.
Diamond Bar, CA 91765 |
| Listing Status | ACTIVE |
| Asking Price | $1,678,000 |
| On Market Date | $1,678,000 @ Sep 26, 2026 |
| Square Footage | 3164 sf |
| Bedrooms | 4 |
| Full Bathrooms | 3 |
| Half Baths | 1 |
| Bathrooms Total Integer | 4 |
| Beds | 4 |
| Est SF | 3,164 |
| Full Bathrooms | 3 |
| Laundry YN | 1 |
| Living Area Source | Assessor |
| Main Level Bathrooms | 2 |
| Main Level Bedrooms | 1 |
| Half Bathrooms | 1 |
| Room Bathroom Features | Bathtub,Shower |
| Rooms Total | 0 |
| Serchbl Rms | Formal Entry,Walk-In Closet,Primary Bedroom,Walk-In Pantry,Laundry,Foyer,Kitchen,Living Room,Main Floor Bedroom,Family Room,Primary Suite,Primary Bathroom |
| Tot Bds | 0 |
| Address | 20508 Crestline Dr. |
| Addr Number | 20508 |
| Addr Street | Crestline Dr. |
| Add Srch Num | 20508 |
| City | Diamond Bar |
| Dir | Pathfinder to Hillrise, Or Brea Canyon Cut-off Rd to Qak Crest |
| Geo Latitude | 33.971367 |
| Geo Longitude | -117.854932 |
| Geo Match Code | 0 |
| Geo Matched Method | 0 |
| Geo Quality | 0 |
| Geo Zoom Level | 0 |
| High School | Diamond Bar |
| High School District | Walnut Valley Unified |
| Market Area | 616 - Diamond Bar |
| State | CA |
| Waterfront YN | No |
| Zip | 91765 |
| Assessment | Unknown |
| Assessments YN | 1 |
| Association Dues 2 | 0 |
| Association Fee2 | 0 |
| Association Fee Frequency | Monthly |
| Association YN | 1 |
| HOA Fee | $120.00 |
| Electric Expense | 0 |
| Fuel Expense | 0 |
| Gross Income | 0 |
| Insurance Expense | 0 |
| Land Lease YN | No |
| Lease Amount | 0 |
| Maintenance Expense | 0 |
| Manager Expense | 0 |
| Net Operating Income | 0 |
| Other Expense | 0 |
| Professional Management Expense | 0 |
| Tax Annual Amount | $0.00 |
| Tax Year | 0 |
| Trash Expense | 0 |
| Water Sewer Expense | 0 |
| Seller Consider Concession YN | 0 |
| Concessions Amount | 0 |
| Sold Price | 0 |
| Entry Location | Front Door/1 |
| Ent Stps | 1 |
| Lot Features | Front Yard,Garden,Lot 10000-19999 Sqft,Back Yard,Lawn |
| Lot SFApx | 10117.00 |
| Lot Size Acres | 0.2323 |
| Lot Size Source | Assessor |
| Lot Size Units | Square Feet |
| Patio YN | 0 |
| Pool | None |
| Pool Private YN | 0 |
| Property Attached YN | No |
| Style | Single Family Residence |
| Total Stories | 2 |
| View | Mountain(s),City Lights,Canyon,Panoramic |
| Lot Size Area | 10117 |
| Horse YN | No |
| Attached Garage YN | Yes |
| Carport Spaces | 0 |
| Number Remotes | 0 |
| Parking Garage Spaces | 3 |
| Parking Total | 3 |
| Parking YN | 0 |
| Garage YN | No |
| Carport YN | No |
| Below Grade Finished Area | 0 |
| Basement YN | No |
| Additional Parcels YN | No |
| Appliances | 6 Burner Stove,Disposal,Electric Water Heater,Microwave,Dishwasher |
| Appliances YN | 1 |
| Asctn Amnts | Other |
| Common Walls | No Common Walls |
| Complx Ftrs | Curbs,Mountainous,Street Lights,Sidewalks |
| Cooling | Electric,Central Air |
| Cooling YN | 1 |
| Fireplace | 1 |
| FP | Family Room |
| Heat Eqpmnt | Central |
| Heating YN | 1 |
| High School2 | DIABAR |
| Keyword | 0 |
| Landry Lctn | Inside,Individual Room,Gas & Electric Dryer Hookup |
| Levels | Two |
| Living Area Units | Square Feet |
| New Construction YN | No |
| Number Of Units Total | 1 |
| Sewer Septc | Public Sewer |
| Sprinklers YN | 0 |
| View YN | 1 |
| Water | Public |
| Well Depth | 0 |
| Well Gallons Per Minute | 0 |
| Well Pump Horsepower | 0 |
| Well Report YN | 0 |
| Yr Blt | 1,996 |
| Yr Built Src | Assessor |
| Assoc ID | Tri-Counties |
| LA1 First Nm | Lucy |
| LA1 Last Nam | Chien |
| IDXContact Info | 626-864-8830 |
| Timeline | Notes |
|---|---|
| Loading listing history… | |
| County | Los Angeles |
| Assessor Parcel# | 8269090019 |
| Geographic Areas |
Community College District: Palomar CC Elementary School: Tierra Bonita |
| Highway Locator |
East of I-15 East of I-5 North of I-8 North of SR-52 |
| Ocean Distance | 17.0 miles |
| Platform | CRMLS |
| AOR | Tri-Counties |
| MLS Number | TR26205561 |
| Courtesy of | |
| Listing Agent |
Lucy
Chien
626-864-8830 |
https://www.californiatophomes.com/TR26205561
| Address | Unit | List Price | Status |
|---|---|---|---|
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