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About This Home

This 4-bedroom, 4-bathroom single family at 673 Castlehill Drive in Walnut, CA is listed for $1,599,000 ($620 per sqft). Built in 2026, the home offers 2,579 sqft of living space on a 0.28 acres lot.

Agent Description

Brand new custom-built luxury home in the heart of Walnut featuring soaring ceilings, sweeping city light and hill views, and an exceptional floor plan designed for modern living. This 4-bedroom, 3.5-bath residence offers 2,579 sqft of meticulously crafted living space with premium finishes throughout.

At the heart of the home, a grand open-concept living area seamlessly connects the gourmet kitchen, dining, and living spaces — an entertainer's dream designed to accommodate large gatherings with ease. The expansive kitchen anchors the space with generous counter space and an effortless flow that makes hosting feel natural.

The main floor features a private ensuite bedroom — perfect for guests or multi-generational living. Upstairs, the grand primary suite is a true retreat with a spa-inspired bath complete with a freestanding soaking tub, walk-in shower, and an oversized walk-in closet. Two additional upstairs bedrooms share a well-appointed Jack and Jill bathroom — ideal for family living.

Enjoy panoramic views of the city lights and rolling hills from the comfort of your own home. No HOA. No Mello Roos. Award-winning Walnut Valley Unified School District and within close proximity to shopping, entertainment and easy access to major freeways

Key Features

  • Built in 2026
  • 0.28 acre lot
  • 2 stories
  • 2 parking spaces

Property Details

2 stories
2 full, 1 half
2 spaces
2026

Amenities

View

Monthly Cost Estimate

$8,552/mo

20% down · 6.5% · 30 years

Principal$1,156
Interest$6,929
Insurance$466

Estimates only. Actual payments may vary.

Location

673 Castlehill Drive

Walnut, CA 91789

Features & Amenities

Exterior Features

Community Features Included: Street LightsBack Yard

Property Details

Views

CityMountain

Cooling

Central Air

Questions & Answers

This 4-bedroom, 4-bathroom single family at 673 Castlehill Drive is listed at $1,599,000 ($620/sqft). The estimated monthly payment is $6,929 based on 20% down at 6.5% interest.

Key features include: Built in 2026, 0.28 acre lot, 2 stories, 2 parking spaces. Exterior Features: Community Features Included: Street Lights, Back Yard.

This property is listed by Karen Kuit and can be reached at 6265248210 or karen@kuithomes.com.

KK

Karen Kuit

Agent at eXp Realty of California Inc

(626) 524-8210

Listed by eXp Realty of California Inc · View on Broker Site

MLS# AR26056234· Source: listhub· Updated 69 days ago

Copyright © 2026 California Regional Multiple Listing Service, Inc. All rights reserved. All information provided by the listing agent/broker is deemed reliable but is not guaranteed and should be independently verified.

673 Castlehill Drive, Walnut, CA 91789

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