
Diamond Bar, California 91765
This Spacious Custom Residence is a Strong Value Opportunity, listed at $1,698,000—positioned well below the $1,711,037 Fair Market Value by 0.76%. This valuation gap offers $13,037 in Instant Equity. Featuring an original-build attached ADU and a massive 49,790 sqft lot, the home is in Fair Condition, offering significant potential for cosmetic modernization. Located in the prestigious Walnut Valley Unified School District near Diamond Bar High School, this property is ideal for Owner-Occupants seeking multigenerational living or Investors targeting long-term appreciation.
Comparables within 1 miles sold in recently
| Address | Sold Price | Beds | Baths | Sq Ft | $/Sqft | Distance |
|---|---|---|---|---|---|---|
★ 1920 Flint Rock Road Subject 5 bd · 4 ba · 3,378 sqft · $507 | $1,698,000* List Price | 5 | 4 | 3,378 | $507 | - |
A 22517 Lazy Meadow Sold 5 bd · 4 ba · 4,642 sqft · $427 · 0.8 mi | $1,980,000 | 5 | 4 | 4,642 | $427 | 0.8 mi |
B 23600 Ridge Line Active 4 bd · 3 ba · 3,406 sqft · $540 · 0.1 mi | $1,838,888 List Price | 4 | 3 | 3,406 | $540 | 0.1 mi |
* Subject property listed price vs sold prices of comps.
Property is moderate renovation needed.
The property was built in 1978 and is being sold by the original owner. While the description notes it has been 'lovingly maintained,' the kitchen and bathrooms are significantly dated, featuring original 45-plus-year-old cabinetry, tile countertops, and fluorescent lighting. The home is move-in ready but requires comprehensive cosmetic updates to meet modern standards.
The property has a large lot size, which is more than 4 times of its living area. lot size in square feet = 49790, living area = 3378.
Elementary School: Quail Summit Elementary School (9/10). High School: Diamond Bar High School (10/10).
The property features a rare, original-build attached ADU with garage-level access, offering exceptional flexibility for rental income or extended family living.
Built in 1978 and held by the original owner, the home likely requires cosmetic updates to align with contemporary luxury standards.
The tri-level floor plan involves multiple sets of stairs, which may be a drawback for buyers seeking high accessibility or a single-level flow.
Rarely does a home offer this level of flexibility, privacy, and opportunity. Lovingly maintained by its original owner, this custom residence features an attached accessory dwelling unit (ADU), an increasingly sought-after amenity for multigenerational living, extended family, or rental income. Conveniently located on the same level as the family room, kitchen, dining area, breakfast nook, and expansive backyard deck, the ADU also enjoys garage-level access, making daily living more comfortable for extended family members or guests. The ADU is part of the original build. Set on more than an acre adorned with picturesque trees, the property is surrounded by the preserved native beauty of California landscape. Inside, the formal living room welcomes you with a dramatic wood-beamed ceiling and charming fireplace. Just below, the formal dining room is surrounded by windows that frame the landscape and make every gathering feel connected to the outdoors. The family room, kitchen, and breakfast nook continue the experience, offering sweeping views of the trees and hills beyond, along with a deck that runs the length of the home. Five bedrooms and four bathrooms are thoughtfully arranged across the tri-level design, with balconies off all of the bedrooms providing peaceful places to enjoy the scenery. The home is filled with natural light. A hallway nook creates the perfect space for a small library, office, or craft room, and the home offers abundant storage throughout. Outdoors, the natural landscape showcases Pepper, Sycamore, and Live Oak trees along with the fragrant beauty of sage, monkey flower, buckwheat, California poppies, and orange trees. Bird lovers will enjoy the many colorful hummingbirds and various birds who also call this place home. An outdoor gardening room allows you space to continue preserving this rare native land, while an additional driveway provides extra parking for gatherings. Residents of Country Estates enjoy access to a heated swimming pool, badminton courts, basketball courts, tennis courts, pickleball courts, and scenic walking trails, all within the gated community.
No exterior & parking available.
Grades K-5 • 0.5 mi
Grades K-5 • 1.5 mi
Grades K-5 • 2.1 mi
No sensitive facilities data found.
| Feature | Subject | Average Home |
|---|---|---|
| Beds | 5.0 | 4.0 |
| Baths | 4.0 | 3.0 |
| Square foot | 3,378 | 2,325.519 |
| Lot Size | 49,790 | 10,258.123 |
| Price | $1.70M | $1.27M |
| Price per sq ft | $503 | $559 |
| Built year | 1978 | 1978 |
| HOA | $308.0 | $207 |
| Days on market | 9 | 56 |
Oct 15, 2026
$1,698,000
Initial Listing