Realkey.ai
RealKey
‪(213) 433-7766‬

21833 Onawa Place, Diamond Bar, California 91765, Diamond Bar, 91765 - 4 bed, 2 bath

21833 Onawa Place, Diamond Bar, California 91765 home-pic-0
ACTIVE$1,258,000$1,881/sqft
Est. Value: $1,255,268
%
FairlyEstimate
21833 Onawa Place, Diamond Bar, California 91765
4Beds
2Baths
1,881Sqft
28,749Lot

Price Vs. Estimate

The estimated value ($1,255,267.89) is $2,732.11 (0%) lower than the list price ($1,258,000). This property may be overpriced.

Key pros and cons

Top Pros:
High Available Lot Utilization: The property has a large lot size, which is more than 4 times of its living area. lot size in square feet = 28749, living area = 1881.
Top Cons:
Recently Sold Property: The property was recently sold within the past year on 2025-10-16. The sold price is $1,050,000.00.

Compared to the nearby listings

Price:$1.26M vs avg $1.15M (+$106,000)63%
Size:1,881 sqft vs avg 2,026 sqft39%
Price/sqft:$669 vs avg $55186%

More Insights

Built in 1964 (62 years old).
Condition: Despite being built in 1964, this property has undergone a 'completely reimagined' and 'thoughtfully remodeled from top to bottom' renovation. The kitchen features brand new appliances, sleek modern finishes, and new cabinetry. Both bathrooms are beautifully updated with modern vanities, fixtures, and tiling. The home boasts upgraded flooring, recessed lighting, newer windows and doors, a newer roof, re-routed plumbing, and a tankless water heater. All visible components are new or virtually new, meeting current quality standards with no deferred maintenance, aligning perfectly with the 'Excellent' criteria for a recently and extensively renovated property.
Year Built
1964
Close
-
List price
$1.26M
Original List price
$1.26M
Price/Sqft
$669
HOA
-
Days on market
-
Sold On
-
MLS number
WS26009062
Home ConditionExcellent
Features
Good View: Neighborhood
Patio
ViewNeighborhood

About this home

Welcome to 21833 Onawa Pl in Diamond Bar! A completely reimagined, turnkey single-story residence tucked away on a peaceful cul-de-sac in the highly sought-after Walnut Valley Unified School District. Surrounded by mature trees and set on over half an acre, this home offers privacy, space, and modern comfort in one of Diamond Bar’s most desirable neighborhoods. This stunning 4-bedroom, 2-bath home has been thoughtfully remodeled from top to bottom, features brand new interior and exterior paint, creating a fresh, clean, and modern look from the moment you arrive. Step through the double-door entry into a bright, open living space filled with natural light, enhanced by upgraded flooring, recessed lighting, and a cozy fireplace — perfect for both everyday living and entertaining. The living room flows seamlessly into the dining area and family room, where large windows and a newer sliding door frame views of the expansive backyard. The fully remodeled kitchen is both stylish and functional, offering ample cabinetry, sleek modern finishes, brand new appliances, and backyard views. An individual laundry room with side-yard access adds to the home’s practical layout. The primary suite serves as a private retreat with generous closet space and a beautifully updated en-suite bathroom. Three additional bedrooms provide flexibility for a growing family, guests, or a home office. Every detail reflects quality craftsmanship and modern design, including updated bathrooms, newer windows and doors, newer roof, re-routed plumbing, tankless water heater, and numerous upgrades that enhance both style and function. Step outside to an exceptionally large and private backyard offering endless possibilities, including room for a future ADU, pool, outdoor kitchen, California room, or expanded garden — ideal for multi-generational living, rental income potential, or creating your dream outdoor retreat. The long driveway and 3-car attached garage provide abundant parking and storage, with additional space for trailer or RV parking. Ideally located less than a mile from top-rated Evergreen Elementary and Diamond Bar High School, and just minutes from Chaparral Middle School, close to shopping, dining, parks, and freeway access, this home delivers the perfect balance of tranquility and convenience. Completely remodeled. Large lot with ADU potential. Single-story homes on cul-de-sacs in Diamond Bar are rare — and this one makes a statement.

C
CHEN DONG
Listing Agent

Price History

Date
Event
Price
10/16/25
Sold
$1,050,000
Condition Rating
Excellent
Despite being built in 1964, this property has undergone a 'completely reimagined' and 'thoughtfully remodeled from top to bottom' renovation. The kitchen features brand new appliances, sleek modern finishes, and new cabinetry. Both bathrooms are beautifully updated with modern vanities, fixtures, and tiling. The home boasts upgraded flooring, recessed lighting, newer windows and doors, a newer roof, re-routed plumbing, and a tankless water heater. All visible components are new or virtually new, meeting current quality standards with no deferred maintenance, aligning perfectly with the 'Excellent' criteria for a recently and extensively renovated property.
Pros & Cons

Pros

High Available Lot Utilization: The property has a large lot size, which is more than 4 times of its living area. lot size in square feet = 28749, living area = 1881.
Extensive Remodel & Turnkey Condition: This single-story residence has been completely reimagined and is in turnkey condition, featuring a thoughtful top-to-bottom remodel including new interior/exterior paint, upgraded flooring, recessed lighting, a fully remodeled kitchen with new appliances, updated bathrooms, newer windows/doors, a newer roof, re-routed plumbing, and a tankless water heater.
Exceptional Lot Size & ADU Potential: Set on over half an acre, the property offers significant privacy and space with an exceptionally large, private backyard. It presents endless possibilities for expansion, including room for a future ADU, pool, outdoor kitchen, or expanded garden, ideal for multi-generational living or rental income.
Prime Location & Top-Rated Schools: Located in the highly sought-after Walnut Valley Unified School District, the home is less than a mile from top-rated Evergreen Elementary and Diamond Bar High School, and minutes from Chaparral Middle School, shopping, dining, parks, and freeway access.
Rare Single-Story Cul-de-Sac Home: Single-story homes on peaceful cul-de-sacs in Diamond Bar are rare, making this property a unique and highly desirable offering in the market.
Abundant Parking & Storage: The property features a long driveway and a 3-car attached garage, providing abundant parking and storage space, with additional room for trailer or RV parking.

Cons

Recently Sold Property: The property was recently sold within the past year on 2025-10-16. The sold price is $1,050,000.00.
Lack of Central Air Conditioning: The property description does not mention a cooling system, which could be a significant drawback for comfort during hot California months.
Original Construction Year: Despite extensive remodeling, the home's original construction year of 1964 means some underlying structural or foundational elements may be older, which could be a concern for some buyers.
Standard Neighborhood View: While the property has a view, it is specified as a 'Neighborhood' view. For a large lot in a desirable area, some buyers might expect more expansive or scenic views (e.g., city lights, mountains) rather than just surrounding homes.
Browse Properties by State Browse housing market trends by state