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1112 Summitridge, Diamond Bar, CA 91765

$1.59M5bd · 3ba · 3,203 sqft
Lot 6,302 sqft•Single Family Residence•
Active
•12d on market•MLS# OC-26211241

Property Description

Welcome to 1112 Summitridge! Where you will find timeless Tudor character, exceptional craftsmanship, and a floor plan designed for the way people actually live. This distinctive 5-bedroom, 3-bath residence pairs generous proportions and extensive natural materials with thoughtful upgrades that enhance functionality while preserving the home’s architectural warmth. Custom leaded-glass double entry doors open to a foyer finished in genuine Italian marble. Brazilian cherry hardwood enriches the formal living and dining rooms, while large format travertine flows throughout the kitchen, family room, wet bar, downstairs bath, laundry, and hallway. Custom millwork, crown molding, solid-wood details, and built-in cabinetry further distinguish the interiors. At the heart of the home, the extensively remodeled kitchen was expanded approximately 30% from the original builder configuration and features custom Signature cabinetry, granite countertops, a full height tumbled travertine backsplash, illuminated display cabinetry, and an expansive single level peninsula with exceptional storage. Premium appliances include a 48-inch Sub Zero refrigerator, Wolf appliances, double dishwasher drawers, and an oversized Villeroy & Boch farmhouse sink. The kitchen opens to a spacious family room anchored by an oversized brick fireplace and an adjacent redesigned wet bar with custom cabinetry, wine refrigerator, and bar sink. The versatile floor plan includes a main-level bedroom and full bath, ideal for guests, an office, or multigenerational living. Upstairs, the extraordinary primary suite functions as a private wing, featuring a separate retreat divided by a double-sided marble fireplace, custom walk-in closet, dual bath arrangement, and a large private balcony overlooking the rolling hills and distant lake. Three additional bedrooms are generously proportioned, including an exceptional oversized room with vaulted ceilings, French doors, custom library built-ins, and dormer window seating. Outside, a custom pool framed by stone and brick detailing creates a private setting against peaceful pastoral views, where rolling hills and grazing horses and cattle can often be seen in the distance. You will not want to miss this opportunity to have a home with the rare combination of architectural character, substantial natural materials, custom craftsmanship, flexible living spaces, and serene surroundings, all within the highly regarded Walnut Valley Unified School District

Features & Amenities

FeeBuilt 1987

Property Details

Land Type
Fee
Year Built
1987
Property Type
Residential
Property Subtype
Single Family Residence
Parking Spaces
6
Garage Spaces
3
Heating
Central
Cooling
Central Air
View
Canyon, Hills, Lake, Panoramic, See Remarks
Flooring
Vinyl, Bamboo, Laminate, Stone, Tile, Wood, See Remarks
Roof
Tile, Concrete
City
Diamond Bar
Zip Code
91765
County
Los Angeles
Listed byUnknown Office, A.J. Bialik

Mortgage Calculator

Current Rates

$
$
%
Monthly Payment
$8,065.19
Principal & Interest
Loan Amount
$1,276,000
Total Interest
$1,627,468
Total Payment Over 30 Years
$2,903,468
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

1112 Summitridge, Diamond Bar, CA 91765

Diamond Bar · Single Family Residence

$1.59M
Luxury Tier
Beds
5
Baths
3
Sqft
3,203
Lot
6,302 sqft
Year
1987
$/Sqft
$498
Pool: Yes✓
Spa: Yes✓
View: city✓
Garage: 3-car✓

Listed 5.1% below the median closed sale of $1,680,000. Price per sqft ($498) is a 11% discount to closed comps ($562). Luxury tier — fewer comparable sales widen the confidence range.

Price Position

Priced below the market — value advantage over the field.

Price advantage
Subject listed at $1.59M· $498/sqft
Total list price
Closed comps
vs closed median $1.68M
−$85K (−5.1%)
Active comps
vs active median $1.66M
−$65K (−3.9%)
Price per sqft
Closed compsinsufficient comp data
Active comps
vs active avg $/sqft $576
−$78 (−13.5%)

Active Properties (5)

Active Comparables

AddressCityYearBDBTHSqFtLotSzLP/SqFtLPDIMScore
3315 HawkwoodDiamond Bar1978533,2128,493$451$1.45M3382
1823 CliffbranchDiamond Bar1977532,7787,909$598$1.66M10381
21086 Willow HeightsDiamond Bar2015553,3125,080$679$2.25M8779
21078 Willow HeightsDiamond Bar2015553,3127,642$754$2.50M12178
23929 Sunset Crossing RoadDiamond Bar1967642,7667,226$397$1.10M1678
Total: 5 · Average5.24.03,0767,270$575.8$1.79M72
Median3,212$1.66M

Closed Properties (5)

Closed Comparables

AddressCityYearDateBDBTHSqFtLotSzLPSPSP/SqFtSP/LPDIMScore
3607 HawkwoodDiamond Bar198405/19/2026543,03010,041$1.79M$1.77M$5830.995474
1566 Autumn HillDiamond Bar197709/04/2026532,84210,163$1.70M$1.64M$5770.963473
23845 ChinookDiamond Bar196307/10/2026533,16610,668$1.20M$1.19M$3750.994972
21535 Chirping SparrowDiamond Bar198005/12/2026432,69710,008$1.74M$1.68M$6230.975971
22105 Birds Eye DrDiamond Bar198109/22/2026432,69010,546$1.80M$1.75M$6500.975270
Total: 5 · Average4.63.22,88510,285.2$1.60M$1.60M$561.6—49.6
Median2,842$1.68M$1.68M

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.