For Sale: 20508 Crestline Dr., Diamond Bar, CA 91765. 4-bedroom 3.5-bath, 3164 sf, 1996 Diamond Bar $1,678,000 begin new search
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Overview

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
Rooms
Formal Entry, Walk-In Closet, Primary Bedroom, Walk-In Pantry, Laundry, Foyer, Kitchen, Living Room, Main Floor Bedroom, Family Room, Primary Suite, Primary Bathroom
Square Footage 3164 sf
Bedrooms 4
Full Bathrooms 3
Half Baths 1
Interior
Bathrooms Total Integer4
Beds4
Est SF3,164
Full Bathrooms3
Laundry YN1
Living Area SourceAssessor
Main Level Bathrooms2
Main Level Bedrooms1
Half Bathrooms1
Room Bathroom FeaturesBathtub,Shower
Rooms Total0
Serchbl RmsFormal Entry,Walk-In Closet,Primary Bedroom,Walk-In Pantry,Laundry,Foyer,Kitchen,Living Room,Main Floor Bedroom,Family Room,Primary Suite,Primary Bathroom
Tot Bds0
Location
Address20508 Crestline Dr.
Addr Number20508
Addr StreetCrestline Dr.
Add Srch Num20508
CityDiamond Bar
DirPathfinder to Hillrise, Or Brea Canyon Cut-off Rd to Qak Crest
Geo Latitude33.971367
Geo Longitude-117.854932
Geo Match Code0
Geo Matched Method0
Geo Quality0
Geo Zoom Level0
High SchoolDiamond Bar
High School DistrictWalnut Valley Unified
Market Area616 - Diamond Bar
StateCA
Waterfront YNNo
Zip91765
Condominium
AssessmentUnknown
Assessments YN1
Association Dues 20
Association Fee20
Association Fee FrequencyMonthly
Association YN1
HOA Fee$120.00
Financial
Electric Expense0
Fuel Expense0
Gross Income0
Insurance Expense0
Land Lease YNNo
Lease Amount0
Maintenance Expense0
Manager Expense0
Net Operating Income0
Other Expense0
Professional Management Expense0
Tax Annual Amount$0.00
Tax Year0
Trash Expense0
Water Sewer Expense0
Seller Consider Concession YN0
Sale History
Concessions Amount0
Sold Price0
Exterior
Entry LocationFront Door/1
Ent Stps1
Lot FeaturesFront Yard,Garden,Lot 10000-19999 Sqft,Back Yard,Lawn
Lot SFApx10117.00
Lot Size Acres0.2323
Lot Size SourceAssessor
Lot Size UnitsSquare Feet
Patio YN0
PoolNone
Pool Private YN0
Property Attached YNNo
StyleSingle Family Residence
Total Stories2
ViewMountain(s),City Lights,Canyon,Panoramic
Lot Size Area10117
Horse YNNo
Parking
Attached Garage YNYes
Carport Spaces0
Number Remotes0
Parking Garage Spaces3
Parking Total3
Parking YN0
Garage YNNo
Carport YNNo
Basement
Below Grade Finished Area0
Basement YNNo
Features
Additional Parcels YNNo
Appliances6 Burner Stove,Disposal,Electric Water Heater,Microwave,Dishwasher
Appliances YN1
Asctn AmntsOther
Common WallsNo Common Walls
Complx FtrsCurbs,Mountainous,Street Lights,Sidewalks
CoolingElectric,Central Air
Cooling YN1
Fireplace1
FPFamily Room
Heat EqpmntCentral
Heating YN1
High School2DIABAR
Keyword0
Landry LctnInside,Individual Room,Gas & Electric Dryer Hookup
LevelsTwo
Living Area UnitsSquare Feet
New Construction YNNo
Number Of Units Total1
Sewer SeptcPublic Sewer
Sprinklers YN0
View YN1
WaterPublic
Well Depth0
Well Gallons Per Minute0
Well Pump Horsepower0
Well Report YN0
Condition
Yr Blt1,996
Yr Built SrcAssessor
Listing Information
Assoc IDTri-Counties
LA1 First NmLucy
LA1 Last NamChien
IDXContact Info626-864-8830
Listing History
Timeline Notes
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Public Records
County Los Angeles
Assessor Parcel# 8269090019
Geographic Areas

Community College District: Palomar CC

Elementary School: Tierra Bonita

High School: Poway

Middle School: Twin Peaks

School District: Poway Unified

Zip Code: 92064

Highway Locator

East of I-15

East of I-5

North of I-8

North of SR-52

Ocean Distance 17.0 miles
Monthly Payment Calculator
Property Tax estimate of 1% of listing price does not include local voter-approved bonds/assessments, supplemental taxes for new construction or ownership changes, extra local fees, etc.
Listing Source
Platform CRMLS
AOR Tri-Counties
MLS Number TR26205561
Courtesy of
Listing Agent Lucy Chien
626-864-8830
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