21128 Trigger Ln, Diamond Bar, CA 91765
SOLD
FEB 23, 2026
Listed by Tracey Thorpe, Coldwell Banker Realty, (562) 494-4600 . Bought with Moon Realty

21128 Trigger Ln
Diamond Bar, CA 91765

  • 4 Beds
  • 2 Baths
  • 2,268 sqft

$1,200,000

Last Sold: Feb 23, 2026
$529/sqft
Est. Refi. Payment $7,147/mo*

$1,200,000

Last Sold: Feb 23, 2026
$529/sqft
Est. Refi. Payment $7,147/mo*
4 Beds
2 Baths
2,268 sqft

Homes for sale near 21128 Trigger Ln

Skip to last item
Skip to first item

Apartments for Rent

Local Information

Map showing home location
© Google
-- mins to
Commute Destination

Description

This private Diamond Bar Ranch-style residence is situated on a large private lot in a cul-de-sac neighborhood. Gracious double-door entry to a large foyer leading to the step-down living room with a charming fireplace. The kitchen is a gorgeous 2021 remodel. Quartz countertops, tile backsplash, and recessed lighting wth an under-mount sink. Totally custom cabinetry, including a handy "lazy susan" corner cabinet. The culinary island includes ample seating, storage, a six-burner Thermador range, and an exhaust hood. Built-in Kitchen Aid double ovens with a top-of-the-line refrigerator, Thermador dishwasher, PLUS drawer-style microwave complete the appliance package. The center island offers ample storage for those small appliances and decor that are not often used. Speaking of storage, do not overlook the walk-in pantry installed in 2010 with custom shelving! The kitchen sewer line was sleeved in 2019. Direct access to the kitchen is from the two-car garage. You'll find the laundry, the water softener (paid for in 2020), and the oversized water heater (2022). Off the glamorous kitchen is a large dining area which opens to the family room for ease of entertaining. The family room has beamed vaulted ceilings and sliding doors to the covered patio. Remodeled in 2022, this patio space has newer concrete that spans the whole rear and side of the home. Also included in the 2022 remodel is fresh hardscape with seating and tiered planters with steps to the sloping hillside, ready for your gardening touch. The primary bedroom, bathroom, and one bedroom were reimagined in 2020 to create a dream retreat. The primary bathroom has custom tile throughout with a large walk-in shower with glass doors. There is a lovely skylight for ambient lighting and a massive walk-in and walk-through closet with a custom storage system. There are three other spacious bedrooms and a bright hall bathroom as well. Enjoy the newer dual-pane vinyl windows (2020) and relax in the climate-controlled environment thanks to the 2022 HVAC system. Tesla solar system installed in 2014 on the 2022 roof! More than just a property, this home has been lovingly cared for and updated - ready for you to enjoy!
This property is off market, which means it's not currently listed for sale or rent on Trulia. This may be different from what's available on other websites or public sources. This description is from February 23, 2026

Home Highlights

Parking
2 Car Garage
Outdoor
Porch, Patio
A/C
Heating & Cooling
HOA
None
Price/Sqft
$529/sqft
Listed
180+ days ago

Home Details for 21128 Trigger Ln

Interior Features

Interior Details
Number of Rooms: 12Types of Rooms: Master Bedroom, Bedroom, Master Bathroom, Bathroom, Family Room, Kitchen, Other
Beds & Baths
Number of Bedrooms: 4Main Level Bedrooms: 4Number of Bathrooms: 2Number of Bathrooms (full): 1Number of Bathrooms (three quarters): 1Number of Bathrooms (main level): 2
Dimensions and Layout
Living Area: 2268 Square Feet
Appliances & Utilities
Utilities: Cable Available, Electricity Connected, Natural Gas Connected, Phone Available, Sewer Connected, Water Connected, Overhead UtilitiesAppliances: Item6BurnerStove, Built-In Range, Double Oven, Dishwasher, Disposal, Gas Oven, Gas Range, Gas Water Heater, Microwave, Refrigerator, Range Hood, Water Softener, Vented Exhaust Fan, Water To Refrigerator, Water HeaterDishwasherDisposalLaundry: In GarageMicrowaveRefrigerator
Heating & Cooling
Heating: Central,Wood StoveHas CoolingAir Conditioning: Central AirHas HeatingHeating Fuel: Central
Fireplace & Spa
Fireplace: Living Room, Raised HearthSpa: NoneHas a FireplaceNo Spa
Gas & Electric
Electric: Photovoltaics Third-Party Owned, Standard
Windows, Doors, Floors & Walls
Window: Skylight(s)Flooring: Carpet, Laminate, TileCommon Walls: No Common Walls
Levels, Entrance, & Accessibility
Stories: 1Number of Stories: 1Levels: OneEntry Location: 1Accessibility: Safe Emergency Egress from Home, Low Pile CarpetFloors: Carpet, Laminate, Tile
View
Has a ViewView: Canyon, Hills, Neighborhood
Security
Security: Carbon Monoxide Detector(s), Smoke Detector(s)

Exterior Features

Exterior Home Features
Roof: CompositionPatio / Porch: Concrete, Covered, Front Porch, Patio, PorchFencing: Block, WoodFoundation: SlabNo Private Pool
Parking & Garage
Number of Garage Spaces: 2Number of Covered Spaces: 2Open Parking Spaces: 2Has a GarageHas an Attached GarageParking Spaces: 4Parking: Concrete,Direct Access,Door-Single,Driveway,Driveway Up Slope From Street,Garage Faces Front,Garage,Garage Door Opener,Paved
Pool
Pool: None
Frontage
Road Frontage: City StreetRoad Surface Type: PavedNot on Waterfront
Water & Sewer
Sewer: Public Sewer, Sewer Tap Paid
Surface & Elevation
Elevation Units: Feet

Days on Market

Cumulative Days on Market: 208

Property Information

Year Built
Year Built: 1964
Property Type / Style
Property Type: ResidentialProperty Subtype: Single Family ResidenceStructure Type: HouseArchitecture: Ranch
Building
Construction Materials: Stone Veneer, Stucco, Wood SidingNot a New ConstructionNot Attached PropertyNo Additional Parcels
Property Information
Condition: Updated/RemodeledParcel Number: 8765010032

Price & Status

Price
List Price: $1,200,000Price Per Sqft: $529/sqft
Status Change & Dates
Off Market Date: Sat Dec 20 2025Possession Timing: Negotiable

Active Status

MLS Status: Closed

Location

Direction & Address
City: Diamond Bar
School Information
Elementary School: Castle RockJr High / Middle School: South PointeHigh School: Diamond BarHigh School District: Walnut Valley Unified

Community

Community Features: Curbs, Gutter(s), Storm Drain(s), Street Lights, Suburban, Sidewalks, ParkNot Senior Community

HOA

Association for this Listing: California Regional MLS

Lot Information

Lot Area: 10542 sqft

Listing Info

Special Conditions: Trust

Offer

Contingencies: StandardListing Terms: Cash to New Loan

Miscellaneous

Mls Number: PW25184476Living Area Range Units: Square FeetAttribution Contact: 5622339982Back On Market Date: Fri Aug 22 2025Common Interest: NoneUniversal Property Id: US-06037-N-8765010032-R-N

Additional Information

CurbsGutter(s)Storm Drain(s)Street LightsSuburbanSidewalksPark
Last check for updates: about 20 hours ago
Listed by Tracey Thorpe DRE #01775129, (562) 233-9982
Coldwell Banker Realty
Debbie Thorpe DRE #01163045, (562) 494-4600
Coldwell Banker Realty
Bought with: Quincy Teng DRE #02060347, Moon Realty
Originating MLS: California Regional MLS
Source: CRMLS, MLS#PW25184476

Price History for 21128 Trigger Ln

DatePriceEventSource
02/23/2026$1,200,000Sold
CRMLS #PW25184476
02/10/2026$1,200,000PendingCRMLS #PW25184476
12/23/2025$1,200,000ContingentCRMLS #PW25184476
11/06/2025$1,200,000PriceChange
CRMLS #PW25184476
08/22/2025$1,249,999Listed For SaleCRMLS #PW25184476
Skip to last item
  • Results are loading
Skip to first item

Property Tax and Assessment

Year2025
Tax$4,058
Assessment$270,250
Home facts updated by county records

Comparable Sales for 21128 Trigger Ln

Address
Distance
Property Type
Sold Price
Sold Date
Bed
Bath
Sqft
0.12
Single-Family Home
$1,093,000
06/12/25
3
2
1,807
0.20
Single-Family Home
$1,040,700
06/03/25
4
2
1,288
0.23
Single-Family Home
$1,012,000
06/17/25
4
3
1,534
0.21
Single-Family Home
$1,388,000
04/17/26
5
3
2,157
0.28
Single-Family Home
$1,000,000
08/05/25
4
2
1,556
0.38
Single-Family Home
$1,030,000
02/27/26
4
2
1,756
0.34
Single-Family Home
$1,236,000
05/30/25
4
3
2,325
0.30
Single-Family Home
$980,000
01/21/26
4
2
1,288
0.56
Single-Family Home
$1,300,000
02/06/26
4
2
1,831

Assigned Schools

These are the assigned schools for 21128 Trigger Ln.
The GreatSchools Rating compares schools on a variety of school quality indicators including test scores, college readiness, equity and more. Learn more.

What Locals Say about Diamond Bar

At least 312 Trulia users voted on each feature.
  • 89 % Say it's dog friendly

  • 88 % Say there are sidewalks

  • 85 % Say car is needed

  • 81 % Say streets are well-lit

  • 78 % Say parking is easy

  • 77 % Say yards are well-kept

  • 74 % Say it's quiet

  • 66 % Say there's holiday spirit

  • 65 % Say people would walk alone at night

  • 64 % Say there's wildlife

  • 60 % Say they plan to stay for at least 5 years

  • 50 % Say kids play outside

  • 48 % Say it's walkable to grocery stores

  • 47 % Say neighbors are friendly

  • 45 % Say it's walkable to restaurants

  • 25 % Say there are community events

Learn more about our methodology.
  • 4szj5yrwps
    "Diamond Bar, California, is a distinctive suburban community in eastern Los Angeles County, offering a unique blend of natural beauty, cultural diversity, and modern amenities. The city is characterized by its rolling hills, scenic landscapes, and well-maintained parks, providing residents with ample opportunities for outdoor recreation. Notable parks include Sycamore Canyon Park and Summitridge Park, both offering hiking trails with picturesque views of the San Gabriel Mountains.  The community’s cultural diversity is reflected in its vibrant culinary scene, featuring a wide array of international cuisines. Events such as the annual Family Festival showcase this diversity through live music, carnival games, and food vendors, fostering a strong sense of community among residents.  Education is a cornerstone of Diamond Bar the unique combination of natural beauty, cultural richness, educational excellence, and forward-thinking initiatives make it a standout community within the greater Los Angeles area."
  • Linda Correa
    "School district, bad traffic, no food variety, city does not help girls softball, no entertaining, safe neighborhood."
  • hubby pie
    "Safe and quiet. Many families live here and school district is top notch if you are in Walnut Valley Unified School District. That covers about half of Diamond Bar. The other district is good but not as good as Walnut."
  • Trulia User
    "Plenty of dog owners in the neighborhood. Everyone is polite to pick up their dogs poop as well as training friendly dogs."
  • hubby pie
    "Diamond Bar is a great city with plenty of parks, quiet neighborhoods and excellent shopping and dining. Schools are top notch."
  • hubby pie
    "Diamond Bar is a safe and friendly community. People care about the community and are proud of this community."
  • hubby pie
    "easy commute with two freeways passing through the community so access to LA, OC, and IE are as easy as it gets."
  • Madelynnpf
    "I lived in this neighborhood for almost 30 years and can’t imagine living anywhere else. It’s quiet and a great place to rise a family."
  • Alexis T.
    "Dogs are welcome in this neighborhood. Everyone cleans up after themselves, keeping the neighborhood tidy. The only thing I can think of is that there are sometimes mountain lions and hawks present which is dangerous for small dogs"
  • Romoguadalupe
    "there are many wonderful hiking trails in the area with beautiful views. If you love nature, you'll love DB. "
  • Deanna L. R.
    "The yearly Firework show in the park is always nice. The Diamond Bar birthday celebration is a lot of fun as well. "
  • Hemming L. A.
    "I’ve lived in this neighborhood for 40 years and it’s a great place to live. Lots of hiking trails and 30 minutes to downtown or the beach."
  • Nicholesaralegui
    "I like this place very family and friendly. kids have greats activity here in city. we live this place"
  • Lauren B.
    "Commute is not too bad. I drive my own vehicle. It only gets congested on Diamond Bar Blvd or Grand Ave but otherwise driving in Diamond Bar is pleasant "
  • Raymond W.
    "Diamond Bar is the safest city I’ve ever lived in. Also, it has many schools and parks! Very family oriented. "
  • Oryaan53
    "my family has lived in this neighborhood for 10plus years and its always been a nice quiet , safe and friendly place to live "
  • Shengbinmi
    "Some of them allow dogs to walk around by themselves in front of their houses, but the dogs are actually very friendly."
  • Trulia User
    "Lots of open space and parks. Lots of sidewalks with trees. There are pet friendly parks and houses. "
  • Evelyn G. D. L. C.
    "A lot of cars speed down Pathfinder, otherwise its a very safe neighborhood. The schools are good. Neighbors are friendly. "
  • Nicholesaralegui
    "we have amazing neighbors and love the community. the city offers a lot of family activities for everyone."
  • Vickiwj
    "Festival, movie night, fireworks, recreational activities, library events, many scenic trails, dog parks, "
  • Nicholesaralegui
    "the city is wonderful for family activities. we love this city and all it has to offer. its a great place to raise a family."
  • Hemming L. A.
    "I’ve lived here for 40 years. Plenty of hiking trails, 30 minutes from LA, 40 min from the beach. Good area."
  • Allyawsome01
    "Good transportation not too much traffic nice people nice area beautiful place to raise a family. Amazing schools"
  • Christine B.
    "My neighborhood is clean and has very respectable and friendly residents. I feel very safe living here."
  • Ashley S.
    "Driving is the main means of transportation. There is a metro station as well as bus stops. However, most people drive."
  • Wlcastellanos
    "Lots of places to walk your dog...plenty of parks. A few people do not pick up after their dogs but most do and care for the neighborhood."
  • Nathan Q.
    "We have young whipper snappers race their cars up and down the street at all hours of the night. As a community we all take turns calling the sheriffs department on them. "
  • Steveji1019
    "Neighborhood with quite a lot of Asian cultures. Schools are some of the best around. Middle class to upper middle class families. "
  • Tahir P.
    "I work in Diamond Bar, my job is less than 3 miles from my house, but still my commute is 15 minutes at times on a good day (no red lights) 7 mins is as fast as I can get to work which is awesome. Lots of cars on main roads (Grand and Diamond Bar) every morning. People going to schools /work. "
  • Joel P.
    "Diamond bar is perfectly located at the intersection of 3 major freeways. 57 ,60, and 10. and very close to the 210. I use all of these in my commute making Diamond bar ideal for my line of work. "
  • Christine
    "Summer movie nights, Fourth of July celebrations, avid long-time spirited Halloween, farmer’s markets. "
  • Ethan Y
    "Yes, they would like living in my area. There are many people walking their dogs in my community. But I don’t like dog barking"
  • Kenny O.
    "Quiet area, but be careful of home invasion robbers. Always closed garage doors, and entry points of your home."
  • Polly Anderson
    "There are frequent car crashes and dangerous drivers running red lights and just causing close calls."
  • Su S.
    "This is a Good place. Good high school near by. Neighborhood are friendly. I really love this community. Pet friendly. Easy to go freeway. "
  • Andy M
    "Not much. Just a bedroom community. But I like it the way it is. There have been little.changes in the past ten years other than two small new developments. "
  • Tahir P.
    "Cut down to 7 mins as opposed to 45-60 mins one way , the mornings can be a little annoying with the 2 minute signals on main roads"

LGBTQ Local Legal Protections

The multiple listing data appearing on this website, or contained in reports produced therefrom, is owned and copyrighted by California Regional Multiple Listing Service, Inc. ("CRMLS") and is protected by all applicable copyright laws. Information provided is for viewer's personal, non-commercial use and may not be used for any purpose other than to identify prospective properties the viewer may be interested in purchasing. All listing data, including but not limited to square footage and lot size is believed to be accurate, but the listing Agent, listing Broker and CRMLS and its affiliates do not warrant or guarantee such accuracy. The viewer should independently verify the listed data prior to making any decisions based on such information by personal inspection and/or contacting a real estate professional.
Based on information from California Regional Multiple Listing Service, Inc. as of 2026-02-09 09:51:42 PST and /or other sources. All data, including all measurements and calculations of area, is obtained from various sources and has not been, and will not be, verified by broker or MLS. All information should be independently reviewed and verified for accuracy. Properties may or may not be listed by the office/agent presenting the information

Homes for rent near 21128 Trigger Ln

Skip to last item
  • Results are loading
Skip to first item

Off Market Homes Near 21128 Trigger Ln

Skip to last item
Skip to first item

Explore by feature

21128 Trigger Ln, Diamond Bar, CA 91765 is a 4 bedroom, 2 bathroom, 2,268 sqft single-family home built in 1964. This property is not currently available for sale. 21128 Trigger Ln was last sold on Feb 23, 2026 for $1,200,000 (0% higher than the asking price of $1,200,000). The current Trulia Estimate for 21128 Trigger Ln is $1,210,900.