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20508 Crestline Dr., Diamond Bar, CA 91765

$1.68M4bd · 4ba · 3,164 sqft
Lot 10,117 sqft•HOA $120/mo•Single Family Residence•
Active
•15d on market•MLS# TR-26205561

Property Description

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.

Features & Amenities

FeeBuilt 1996

Property Details

Land Type
Fee
Year Built
1996
Property Type
Residential
Property Subtype
Single Family Residence
Parking Spaces
3
Garage Spaces
3
Heating
Central
Cooling
Central Air, Electric
View
Canyon, City Lights, Mountain(s), Panoramic
City
Diamond Bar
Zip Code
91765
County
Los Angeles
Listed byUnknown Office, Lucy Chien

Mortgage Calculator

Current Rates

$
$
%
Monthly Payment
$8,484.88
Principal & Interest
Loan Amount
$1,342,400
Total Interest
$1,712,157
Total Payment Over 30 Years
$3,054,557
This calculator provides estimates only. Actual mortgage payments may include taxes, insurance, HOA fees, and PMI. Contact a lender for accurate quotes.

Comparative Market Analysis

Luxury Tier · 5 active · 5 closed

20508 Crestline Dr., Diamond Bar, CA 91765

Diamond Bar · Single Family Residence

$1.68M
Luxury Tier
Beds
4
Baths
4
Sqft
3,164
Lot
10,117 sqft
Year
1996
$/Sqft
$530
Pool: No✓
View: city✓
Garage: 3-car✓

Listed 13.4% above the median closed sale of $1,480,000. Luxury tier — fewer comparable sales widen the confidence range.

Price Position

Positioned above the market — commands a premium.

Premium
Subject listed at $1.68M· $530/sqft
Total list price
Closed comps
vs closed median $1.48M
+$198K (+13.4%)
Active comps
vs active median $1.59M
+$83K (+5.2%)
Price per sqft
Closed compsinsufficient comp data
Active comps
vs active avg $/sqft $548
−$18 (−3.3%)

Active Properties (5)

Active Comparables

AddressCityYearBDBTHSqFtLotSzLP/SqFtLPDIMScore
3315 HawkwoodDiamond Bar1978533,2128,493$451$1.45M3389
23836 Minnequa DriveDiamond Bar1966532,73210,298$439$1.20M8287
21078 Willow HeightsDiamond Bar2015553,3127,642$754$2.50M12186
1112 SummitridgeDiamond Bar1987533,2036,302$498$1.59M685
1823 CliffbranchDiamond Bar1977532,7787,909$598$1.66M10384
Total: 5 · Average5.03.43,047.48,128.8$548$1.68M69
Median3,203$1.59M

Closed Properties (5)

Closed Comparables

AddressCityYearDateBDBTHSqFtLotSzLPSPSP/SqFtSP/LPDIMScore
22105 Birds Eye DrDiamond Bar198109/22/2026432,69010,546$1.80M$1.75M$6500.975291
23845 ChinookDiamond Bar196307/10/2026533,16610,668$1.20M$1.19M$3750.994990
1566 Autumn HillDiamond Bar197709/04/2026532,84210,163$1.70M$1.64M$5770.963490
559 Great BendDiamond Bar197508/26/2026432,5749,493$1.10M$1.10M$4271.003489
1522 Sunbluff DriveDiamond Bar198108/31/2026432,5779,139$1.59M$1.48M$5740.936188
Total: 5 · Average4.43.02,769.810,001.8$1.43M$1.43M$520.6—46
Median2,690$1.48M$1.48M

Market Analysis

List vs Sale $/SqFt

Sale Price Trend

Days on Market

Sale vs List Price

AI-generated CMA

This analysis was generated automatically from MLS data. For an in-depth, human-reviewed valuation, contact Joseph Sardella at josephsardella@gmail.com.