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21122 Trigger , Diamond Bar, CA 91765

$1,020,000

4
beds
2 full · 1 half
baths
1,829
sqft
1964
year built

Presenting a wonderful opportunity to own a home in the desirable city of Diamond Bar, located within the highly regarded Walnut Valley Unified School District. Built in 1964, this 4-bedroom, 2.5-bathroom split-level residence offers approximately 1,829 sq. ft. of living space on an expansive 10,281 sq. ft. lot. The functional split-level floor plan offers comfortable living spaces and a practical layout. The primary suite features a private balcony, offering a peaceful place to relax and enjoy the surroundings. The generously sized lot offers exceptional outdoor potential, with ample space for entertaining, gardening, outdoor dining, or creating your own private retreat. Whether you are an investor, contractor, or buyer looking to customize a home to your own taste, this property presents an exciting opportunity to add value and bring your vision to life. Conveniently located near shopping, dining, parks, and everyday amenities, this property combines a desirable location, generous lot size, and tremendous potential. Don't miss this opportunity to create your dream home in Diamond Bar and become part of the sought-after Walnut Valley Unified School District!

  • Bedrooms
    4
  • Bathrooms
    2 full · 1 half
  • Year Built
    1964
  • Stories
    2.0
  • Living Area
    1829.0
  • Appliances
    Dishwasher, Disposal
  • Cooling
    Central Air
  • Heating
    Forced Air

  • View
    Neighborhood
  • Water
    Public


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Frequently Asked Questions

How do I schedule a tour of 21122 Trigger?

We can make that happen quickly. Click Tour This Home and we'll connect you directly with our vetted local partner to schedule your visit to 21122 Trigger.

They know residentials in the area well and can give you the guidance you need to buy with confidence.

How do I get more information about 21122 Trigger?

Click Ask a Question to talk with our team. You already know it is a 4 bed, 2 bath, listed for $1,020,000. We can talk through recent upgrades, potential seller motivation, how this single family residence compares to others in Diamond Bar, and can even get you in to see the property quickly.

How much is the monthly mortgage payment for 21122 Trigger?

With a 20% down payment and a 30-year fixed loan at an illustrative 6.75% rate, the ez Mortgage Calculator estimates the monthly payment for 21122 Trigger at around $5,531. This includes estimated property taxes and insurance.

Want to see how this changes with different down payments or interest rates? Jump to the calculator to run the numbers and fine-tune your plan.

How do I get pre-approved to buy 21122 Trigger?

Stand out in a competitive market by getting pre-approved today. Our quick and private pre-approval process helps you understand your true buying power—no credit pull required to explore all of your options.

Or, let us connect you with our preferred local lender in Los Angeles County. They will give you all of your available financing options, based on your specific situation and what is available to you.

Can I negotiate the asking price for 21122 Trigger?

In most cases, yes. Whether 21122 Trigger is priced competitively or not, your best offer depends on your personal situation, the seller's timeline, and recent activity in Diamond Bar's market. Our preferred local partner will help you craft a strategy—factoring in comparable properties that have sold, timing, and deal structure—to make a smart, strong offer. Click here to ask about negotiation opportunities.

How do I make an offer on 21122 Trigger?

We can handle that for you. Our preferred local agent specializes in residentials in Diamond Bar and can guide you through every step of the offer process.

You need an expert who is looking out for your best interests. From market valuation to contingencies and timing, they'll help you present a compelling offer that fits your goals. Click Ask a Question to get started today.

What is the price per square foot for this home?

This home is listed at $1,020,000 with 1,829 sqft of space—that comes out to approximately $558 per square foot.

How long has this property been on the market?

21122 Trigger was listed on November 06, 2026, which means it's been on the market for 0 days.

Want to keep tabs on it? Click the ♥ to favorite this home and get notified of price drops or changes.

When was this house built?

This home was built in 1964, making it approximately 62 years old.

Is 21122 Trigger still available for sale?

Source: ez Home Search, MLS Data

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This information is deemed reliable but not guaranteed. You should rely on this information only to decide whether or not to further investigate a particular property. BEFORE MAKING ANY OTHER DECISION, YOU SHOULD PERSONALLY INVESTIGATE THE FACTS (e.g. square footage and lot size) with the assistance of an appropriate professional. You may use this information only to identify properties you may be interested in investigating further. All uses except for personal, noncommercial use in accordance with the foregoing purpose are prohibited. Redistribution or copying of this information, any photographs or video tours is strictly prohibited. This information is derived from the Internet Data Exchange (IDX) service provided by San Diego MLS. Displayed property listings may be held by a brokerage firm other than the broker and/or agent responsible for this display. The information and any photographs and video tours and the compilation from which they are derived is protected by copyright. Copyright © 2026 San Diego MLS.

Last Updated: November 06, 2026 at 05:00PM | Source: San Diego MLS | MLS#: PW26237117