Welcome to 21284 Lycoming, a completely reimagined, turnkey residence located in the heart of the prestigious Walnut School District. Tucked away at the end of a quiet cul-de-sac, this one-story home with 4 bedrooms and 2 full bathrooms offers exceptional privacy, a functional layout, and modern upgrades throughout—nothing left to do but move in. From the moment you enter, you’ll notice the bright, open floor plan enhanced by high ceilings, clean lines, and contemporary finishes. The spacious living room flows seamlessly into the dining area and fully renovated kitchen featuring stylish cabinets, stunning quartz waterfall countertop, and all-new modern appliances. A separate family room with a fireplace adds warmth and versatility, perfect for gatherings or relaxing evenings at home. The primary suite is thoughtfully separated from the additional bedrooms, offering added privacy and comfort, complete with a walk-in closet. Generously sized bedrooms and bathrooms, ample hallway storage, and a smart single-level layout make this home both practical and inviting. This home has been thoughtfully remodeled from top to bottom, featuring brand new laminate wood flooring, fresh interior finishes, modernized kitchen and bathrooms, all new windows and doors, newer roof, re-piped plumbing, and numerous upgrades that elevate both style and function. Step outside to a private, good-sized backyard, ideal for entertaining, gardening, or simply enjoying the peaceful cul-de-sac setting. Conveniently located near top-rated schools, shopping, markets, restaurants, and easy freeway access, this home offers the perfect balance of comfort, quality, and location. A rare opportunity to own a fully remodeled home in one of Walnut’s most desirable neighborhoods—homes like this don’t last.
Sold for $1,080,000
Listing Provided by: Pinnacle Real Estate Group
Bought with: BERKSHIRE HATH HM SVCS CA PROP
$1,080,000
21284 Lycoming St, Diamond Bar, CA 91789
4beds
1,812sqft
Single Family Residence
Built in 1980
5,947 Square Feet Lot
$1,082,500 Zestimate®
$596/sqft
$4,060 Estimated rent
Home value
$1,082,500
$985,000 - $1.19M
$4,060/mo
Zestimate® history
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Zillow last checked:
Listing updated:
Listing Provided by:
CHEN DONG DRE #02151161 909-500-8877,
Pinnacle Real Estate Group,
Chloe Chan DRE #01863279,
Pinnacle Real Estate Group
Bought with:
Fandy Lam, DRE #02119012
BERKSHIRE HATH HM SVCS CA PROP
Jonathan Chi, DRE #01852773
BERKSHIRE HATH HM SVCS CA PROP
Source: CRMLS,MLS#: WS26003483
Originating MLS: California Regional MLS
Originating MLS: California Regional MLSFacts & features
Interior
Bedrooms & bathrooms
- Bedrooms: 4
- Bathrooms: 2
- Full bathrooms: 2
- Main level bathrooms: 3
- Main level bedrooms: 4
Primary bedroom
- Features: Main Level Primary
Primary bedroom
- Features: Primary Suite
Bedroom
- Features: All Bedrooms Down
Bedroom
- Features: Bedroom on Main Level
Bathroom
- Features: Bathroom Exhaust Fan, Dual Sinks, Full Bath on Main Level, Quartz Counters, Remodeled, Separate Shower, Walk-In Shower
Kitchen
- Features: Kitchen Island, Kitchen/Family Room Combo, Quartz Counters, Remodeled, Self-closing Drawers, Updated Kitchen
Other
- Features: Walk-In Closet(s)
Heating
- Central
Cooling
- Central Air
Appliances
- Included: Dishwasher, Gas Cooktop, Gas Range, Gas Water Heater, Microwave, Water Heater
- Laundry: Washer Hookup, Gas Dryer Hookup, In Garage
Features
- Breakfast Bar, Eat-in Kitchen, High Ceilings, Open Floorplan, Quartz Counters, Recessed Lighting, All Bedrooms Down, Bedroom on Main Level, Main Level Primary, Primary Suite, Walk-In Closet(s)
- Flooring: Laminate, Tile, Wood
- Windows: Double Pane Windows, ENERGY STAR Qualified Windows, Screens
- Has fireplace: Yes
- Fireplace features: Family Room
- Common walls with other units/homes: No Common Walls
Interior area
- Total interior livable area: 1,812 sqft
Property
Parking
- Total spaces: 2
- Parking features: Driveway, Garage, Garage Door Opener
- Attached garage spaces: 2
Features
- Levels: One
- Stories: 1
- Entry location: Front Door
- Pool features: None
- Spa features: None
- Has view: Yes
Lot
- Size: 5,947 sqft
- Features: Back Yard, Cul-De-Sac, Front Yard, Street Level
Details
- Parcel number: 8719017043
- Special conditions: Standard
Construction
Type & style
- Home type: SingleFamily
- Property subtype: Single Family Residence
Materials
- Foundation: Slab
- Roof: Composition
Condition
- Updated/Remodeled
- New construction: No
- Year built: 1980
Utilities & green energy
- Sewer: Public Sewer
- Water: Public
Community & neighborhood
Security
- Security features: Carbon Monoxide Detector(s), Smoke Detector(s)
Community
- Community features: Curbs, Street Lights, Sidewalks
Location
- Region: Diamond Bar
Other
Other facts
- Listing terms: Cash,Cash to New Loan,Conventional
Price history
| Date | Event | Price |
|---|---|---|
| 4/15/2026 | Sold | $1,080,000-0.7%$596/sqft |
Source:  CRMLS #WS26003483 Report a problem | ||
| 3/17/2026 | Pending sale | $1,088,000$600/sqft |
Source: CRMLS #WS26003483 Report a problem | ||
| 2/19/2026 | Listed for sale | $1,088,000$600/sqft |
Source: CRMLS #WS26003483 Report a problem | ||
| 2/17/2026 | Contingent | $1,088,000$600/sqft |
Source: CRMLS #WS26003483 Report a problem | ||
| 2/4/2026 | Listed for sale | $1,088,000+24.3%$600/sqft |
Source: CRMLS #WS26003483 Report a problem | ||
| 10/22/2025 | Sold | $875,000-1.5%$483/sqft |
Source: CRMLS #TR25208711 Report a problem | ||
| 10/13/2025 | Pending sale | $888,000$490/sqft |
Source: CRMLS #TR25208711 Report a problem | ||
| 10/3/2025 | Contingent | $888,000$490/sqft |
Source: CRMLS #TR25208711 Report a problem | ||
| 9/24/2025 | Listed for sale | $888,000$490/sqft |
Source: CRMLS #TR25208711 Report a problem | ||
Public tax history
| Year | Property taxes | Tax assessment |
|---|---|---|
| 2025 | $3,438 +11.3% | $217,656 +2% |
| 2024 | $3,088 +1.9% | $213,389 +2% |
| 2023 | $3,032 +1.7% | $209,206 +2% |
| 2022 | $2,980 +2.5% | $205,105 +2% |
| 2021 | $2,906 +0.4% | $201,084 +1% |
| 2020 | $2,893 | $199,023 +2% |
| 2019 | $2,893 +6.4% | $195,122 +2% |
| 2018 | $2,719 | $191,297 +2% |
| 2017 | $2,719 +1.8% | $187,547 +2% |
| 2016 | $2,670 +5% | $183,870 +1.5% |
| 2015 | $2,542 +1.4% | $181,109 +2% |
| 2014 | $2,508 | $177,562 +2.5% |
| 2012 | -- | $173,296 +2% |
| 2011 | -- | $169,899 +0.8% |
| 2010 | -- | $168,630 -0.2% |
| 2009 | -- | $169,032 +2% |
| 2008 | -- | $165,718 +2% |
| 2007 | -- | $162,469 +2% |
| 2006 | -- | $159,284 |
| 2005 | -- | $159,284 +4% |
| 2004 | -- | $153,101 +1.9% |
| 2003 | -- | $150,296 +2% |
| 2002 | -- | $147,350 +4% |
| 2000 | -- | $141,631 |
Find assessor info on the county website
Neighborhood: 91789
Nearby schools
GreatSchools rating
- 9/10Walnut Elementary SchoolGrades: K-5Distance: 0.7 mi
- 10/10South Pointe Middle SchoolGrades: 6-8Distance: 0.9 mi
- 10/10Walnut High SchoolGrades: 9-12Distance: 1.5 mi
Schools provided by the listing agent
- High: Walnut
Source: CRMLS. This data may not be complete. We recommend contacting the local school district to confirm school assignments for this home.
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Estimated market value
$1,082,500
Get a cash offer in 3 minutes
Find out how much your home could sell for in as little as 3 minutes with a no-obligation cash offer.
Estimated market value
$1,082,500
- California
- Los Angeles County
- Diamond Bar
- 91789
- 21284 Lycoming St
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