673 Castlehill
Walnut, CA, 91789
$1,388,000
4 Beds
3.5 Baths
2,579 SqFt
0.28 Acres
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MLS #IG26218237 image #0
BRAND-NEW CUSTOM LUXURY HOME WITH BREATHTAKING CITY-LIGHT VIEWS IN WALNUT! This exceptional 4-bedroom, 3.5-bath residence sits on an expansive 12,000+ sq. ft. lot and offers approximately 2,579 sq. ft. of beautifully designed living space with premium, high-quality upgrades throughout. Soaring ceilings, sophisticated finishes, an open-concept floor plan, and panoramic city-light and rolling-hill views create an exceptional blend of luxury, comfort, and modern living.

The impressive gourmet kitchen is the centerpiece of the home, featuring an upgraded backsplash, elegant glass-front cabinetry, quartz countertops, a large center island, and soft-closing drawers. It flows seamlessly into the dining and spacious family room, creating an ideal space for entertaining and everyday gatherings. A fireplace adds warmth to the family room, while luxury vinyl plank flooring and high ceilings enhance the home’s contemporary style.

The main level features a private ensuite bedroom, ideal for guests, extended family, or multigenerational living, plus a separate powder room. Upstairs, the luxurious primary suite offers a spa-inspired retreat with a freestanding soaking tub, walk-in shower, and oversized walk-in closet. Two additional bedrooms share a convenient Jack-and-Jill bathroom.

The oversized garage features epoxy flooring, abundant storage, and direct access to the home. The expansive backyard offers beautiful city-light and hillside views, along with potential for an ADU or additional outdoor living space, subject to applicable city requirements. An additional street at the rear of the property provides added access and flexibility.

NO HOA. NO MELLO-ROOS. Located in the highly regarded Walnut Valley Unified School District, this home is conveniently close to shopping, dining, entertainment, major freeways, and everyday conveniences.

A rare opportunity to own a brand-new custom luxury home on a premium oversized lot with exceptional views, high-quality upgrades, and no HOA or Mello-Roos in the heart of Walnut.

Property Details

Price:
$1,388,000
MLS #:
IG26218237
Status:
Active
Beds:
4
Baths:
3.5
Type:
Single Family
Subtype:
Single Family Residence
Neighborhood:
668walnut
Listed Date:
Oct 8, 2026
Finished Sq Ft:
2,579
Lot Size:
12,225 sqft / 0.28 acres (approx)
Year Built:
2026
Newconstruction668 – Walnut668walnutWalnut Valley UnifiedPanoramic

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Schools

School District:
Walnut Valley Unified

Interior

Bathrooms
3 Full Bathrooms, 1 Half Bathroom
Cooling
Central Air
Laundry Features
Laundry Closet
Levels
Two
Main Level Bathrooms
1

Exterior

Attached Garage YN
1
Common Walls
No Common Walls
Community Features
Street Lights
Covered Spaces
2
Garage Spaces
2
Lot Features
0-1 Unit/Acre
Parking Spots
2
Parking Total
2
Stories
2
View
Panoramic

Financial

Map

Community

Market Summary

Current real estate data for Single Family in Walnut as of Nov 01, 2026
85
Single Family Listed
73
Avg DOM
610
Avg $ / SqFt
$1,689,774
Avg List Price

Property Summary

    673 Castlehill Walnut CA is a Single Family for sale in Walnut, CA, 91789. It is listed for $1,388,000 and features 4 beds, 4 baths, and has approximately 2,579 square feet of living space, and was originally constructed in 2026. The current price per square foot is $538. The average price per square foot for Single Family listings in Walnut is $610. The average listing price for Single Family in Walnut is $1,689,774.

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673 Castlehill
Walnut, CA