$1,388,000
673 Castlehill, Walnut, CA
MLS# IG26218237
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.
673 Castlehill • Walnut, CA 91789
Julie Lee
DRE #: 01892085
Brokerage: JL Realty & Management
Closed sales reported in 91789, nearest first, last 12 months. All recent sales in Walnut →
CRMLS
MLS# IG26218237
Listed: 10/7/2026 5:30 PM
© 2026 California Regional Multiple Listing Service, Inc.
Based on information from the California Regional Multiple Listing Service, Inc. as of 10/9/2026 6:18 AM. This information is for your personal, non-commercial use and may not be used for any purpose other than to identify prospective properties you may be interested in purchasing. Display of MLS data is deemed reliable but is not guaranteed accurate by the MLS.
IDX information is provided exclusively for consumers' personal, non-commercial use. Information is deemed reliable but not guaranteed. Buyer should independently verify all information.
Listed by: JL Realty & Management
Equal Housing Opportunity
Advertising Broker: Nalren Corp (CA DRE #02423715)
Licensed in the state of California
Nalren Corp (CA DRE #02423715) is the Advertising Broker for this IDX display. We are not the listing broker for this property. The listing broker/agent information is shown above. Contact the listing agent for inquiries.