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20774 Timberline, Diamond Bar, CA 91789

$1.24M3bd · 3ba · 1,755 sqft
Lot 3,999 sqft•HOA $15/mo•Single Family Residence•
Active
•25d on market•MLS# TR-26201462

Property Description

Welcome to this beautifully updated 3 bedroom, 2.5 bathroom home in one of Diamond Bar's most desirable neighborhoods. this home offers beautiful neighborhood views, exceptional privacy, and a peaceful setting. The open floor plan features high ceilings, abundant skylights, the master bedroom suite dual vanities, and separate glass-enclosed shower. The kitchen ample cabinetry with granite countertops. Additional upstair den areas provide options for a home office. this property offers plenty of room for outdoor dining, gardening . Throughout the home you'll find wood flooring, plantation shutters, dual-pane windows, impressive double-door entry, and an attached two-car garage. Located within the award-winning Walnut Valley Unified School District and just a short walk to Park, this home is also minutes from Diamond Bar Town Center, H Mart, Sprouts, Costco, and the 57, 60, and 71 freeways. this is a rare opportunity to own a peaceful sanctuary in one of Diamond Bar's premier communities.

Features & Amenities

FeeBuilt 1989

Property Details

Land Type
Fee
Year Built
1989
Property Type
Residential
Property Subtype
Single Family Residence
Parking Spaces
2
Garage Spaces
2
Heating
Central
Cooling
Central Air
View
City Lights
Flooring
Wood
City
Diamond Bar
Zip Code
91789
County
Los Angeles
Listed bySunbright One Inc., Wendy Tsau

Mortgage Calculator

Current Rates

$
$
%
Monthly Payment
$6,270.11
Principal & Interest
Loan Amount
$991,999
Total Interest
$1,265,240
Total Payment Over 30 Years
$2,257,239
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

Residential Tier · 5 active · 5 closed

20774 Timberline, Diamond Bar, CA 91789

Diamond Bar · Single Family Residence

$1.24M
Residential Tier
Beds
3
Baths
3
Sqft
1,755
Lot
3,999 sqft
Year
1989
$/Sqft
$707
Pool: No✓
View: city✓
Garage: 2-car✓

Listed 11.2% above the median closed sale of $1,115,000. Price per sqft ($707) is a 37% premium to closed comps ($515). Closed comps sold at 80% of list — buyers have negotiating leverage.

Price Position

Positioned above the market — commands a premium.

Premium
Subject listed at $1.24M· $707/sqft
Total list price
Closed comps
vs closed median $1.11M
+$125K (+11.2%)
Active comps
vs active median $1.00M
+$240K (+24.0%)
Price per sqft
Closed compsinsufficient comp data
Active comps
vs active avg $/sqft $642
+$65 (+10.2%)

Active Properties (5)

Active Comparables

AddressCityYearBDBTHSqFtLotSzLP/SqFtLPDIMScore
1441 Rolling Knoll RoadDiamond Bar1978331,7726,508$638$1.13M8178
23433 Quail Summit DrDiamond Bar1976321,4368,682$696$1.00M1274
24271 Seagreen DriveDiamond Bar1984331,55210,784$611$948,000472
1118 ClorindaDiamond Bar1965431,7146,658$652$1.12M4271
239 Palo CedroDiamond Bar1969421,6008,261$612$979,9001171
Total: 5 · Average3.42.61,614.88,178.6$641.8$1.04M30
Median1,600$1.00M

Closed Properties (5)

Closed Comparables

AddressCityYearDateBDBTHSqFtLotSzLPSPSP/SqFtSP/LPDIMScore
522 Julian CourtDiamond Bar198607/31/2026421,7849,210$1.19M$115,000$640.103677
1010 CogburnDiamond Bar198408/27/2026431,7476,654$1.12M$1.11M$6381.008376
23819 Country ViewDiamond Bar197509/11/2026421,7049,137$1.18M$1.13M$6630.969875
1109 Overlook RidgeDiamond Bar196808/13/2026432,0217,592$1.15M$1.15M$5671.0015974
1456 Winterwood LaneDiamond Bar197407/24/2026421,7047,001$1.15M$1.10M$6430.958568
Total: 5 · Average4.02.41,7927,918.8$920,200$920,200$515—92.2
Median1,747$1.11M$1.11M

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.