See Home Value
$1,589,000
● House - Off Market

21040 Ambushers

Diamond Bar, CA 91765
bedrooms
4 Beds
bathrooms
2 Baths, 1 Half Bath
square feet
2,805 Ft²
$7,361
Est. Monthly

About This Property

Entertainer's pool home situated on a large private lot in a desirable neighborhood. The spacious floor plan features formal living and dining rooms with cathedral ceilings, a fireplace, and plantation shutters. The remodeled kitchen is a chef's delight, offering granite countertops, custom cabinetry, a walk-in pantry, a center island with a prep sink, and a premium KitchenAid appliance package featuring a built-in refrigerator and beverage cooler. The kitchen flows seamlessly into the breakfast nook and expansive family room, perfect for daily living and large gatherings.  

Quality upgrades abound, including engineered hardwood flooring, dual-pane windows/doors, recessed lighting, and new repiping(May, 2026) for long-term peace of mind. The primary suite offers a private retreat with dual closets, an en suite bath, and a private balcony overlooking the grounds. All secondary bedrooms are generously sized with recessed lighting & mirrored closet doors.  

Step outside to a private backyard oasis complete with a luxury pebble-finish pool and spa, a waterfall, covered patio, and ample space for outdoor dining. Enhanced by beautiful stone accents, a three-car garage, and a location within the highly sought-after Walnut Valley School District, this home is an absolute must-see!
Unit Size
2,805 Ft²
Days on Market
38 days
Land Size
0.52 acres
Price per sqft
$534
Property Type
House
Property Taxes
-
HOA Dues
-
Year Built
1981

Payment Calculator

Cap Rate Calculator

Last updated: 4 months ago (CRMLS #TR26125566)

Price History

Date / Event Date Event Price
Jul 17, 2026 Sold
Sold
Jun 19, 2026 In contract -
In contract
Jun 9, 2026 Listed by New Star Realty & Inv. $1,499,000
Listed by New Star Realty & Inv.

Property Highlights

Garage
Air Conditioning
Fireplace

Building Info

Overview

    General

  • Year Built: 1981
  • Effective Year Built: 1990
  • Building Count: 1
  • Total Rooms: 12
  • Bedroom Count: 4
  • Bathroom Count: 3
  • Full Bathrooms: 3
  • Partial Bathrooms: 3
  • Building Condition: 3
  • Building Quality: 1
  • Construction Type: 17
  • Building Style: 15
  • Exterior Walls Type: 12
  • Interior Walls Type: 0
  • Roof Shape Type: 1
  • Roof Cover Type: 18
  • Floor Count: 200
  • Living Units: 1
  • Floor Cover: 0
  • Basement Type: 0
  • Basement Area: 0
  • Garage Type: 0
  • Parking Space Count: 1
  • Patio Type: 0
  • Porch Type: 0
  • Pool Type: 8

    Dimensions

  • Lot Size Square Feet: 22,679
  • Lot Size Depth Feet: 1,200
  • Lot Size Frontage Feet: 1,020
  • Total Building Area: 2,805
  • Building Area: 2,805
  • Building Area Measurement: L

    Heating and Cooling

  • Fireplace Count: 1
  • Air Conditioning: 1
  • Heating: 3
  • Heated Square Feet: 2,805
  • Heating Fuel Type: 0

    Utilities

  • Sewer System: 0
  • Water Service: 2

Building

  • Building Type: 0
  • Property Class: R
  • Subdivision: 34160
  • Land Acres: 0000000521
  • Standard Land Use Code: 1001
  • County Land Use Code: 0101
  • Legal Description 1: *TR=34160 LOT/SEC 21

Neighborhood

  • School District Name: Walnut Valley Unified School District
  • Census Tract: 403325

Zoning

  • Zoning: LCR19000*

Geography

  • Assessors Map Reference: 97-D6
  • Subdivision Tract Number: 34160
  • Parcel: 8714-011-013
  • Lot: 21
  • Municipality: EAST /DIAMOND BAR
  • Latitude: 33.9646
  • Longitude: -117.845

    Address

  • Full Address: 21040 Ambushers St
  • Address - House Number: 21040
  • Address - Street Name: Ambushers
  • Address - Suffix Type: St
  • State: CA
  • City Name: Diamond Bar
  • Carrier Code: C018
  • 4-Digit Zip Code: 3731
  • Zip Code: 91765

Valuation

    Tax

  • Tax Year: 2022
  • Tax Amount: $1,345,992
  • Tax Rate Code Area: 10-114

    Appraisal Valuation

  • Standard Deviation: 0.218
  • Valuation Date: Aug 04, 2023
  • Confidence Score: 70
  • Final Value: 1,387,327
  • High Value: 1,689,782
  • Low Value: 1,084,871

    Assessments Valuation

  • Assessed Year: 2023
  • Assessed Total Value: $1,135,199
  • Assessed Land Value: $554,366
  • Assessed Improvements Value: $580,833

    Exemptions

  • Homeowner Exemption: Yes

    Sales

  • Current Sale Contract Date: Aug 21, 2017
  • Current Sale Recording Date: Sep 01, 2017
  • Current Sale Price:
  • Current Sale Document Type: 36
  • Current Sale Input Document Number: 17-0999088
  • Previous Sale Recording Date: Nov 26, 2013
  • Previous Sale Contract Date: Oct 28, 2013
  • Previous Sale Amount: $915,000
  • Previous Sale Document Type: 36

    Financing

  • First Mortgage Financing Type: ADJ
Data used for valuation calculations is provided by RealtyHop, and other third party sources

Comparables

Unit
Status
Type
Beds
Baths
ft²
Price/ft²
Asking Price
Listed On
Closing Price
Sold On
HOA + Taxes

About Diamond Bar


Similar Homes for Sale

Currently no similar homes around

Nearby Rentals

Unit for rent at 19512 Greenwillow, ROWLAND HEIGHTS, CA, 91748

$4,500 /mo

  • 4 Beds
  • 3 Baths
  • 2,453 ft²
19512 Greenwillow, ROWLAND HEIGHTS, CA, 91748 Listing by Jeffrey Milner
Unit for rent at 20834 E Crest, WALNUT, CA, 91789

$3,450 /mo

  • 3 Beds
  • 2 Baths
  • 1,546 ft²
20834 E Crest, WALNUT, CA, 91789 Listing by Wayne Yang
Unit for rent at 20431 Huntcliff, WALNUT, CA, 91789

$3,850 /mo

  • 4 Beds
  • 3 Baths
  • 1,802 ft²
20431 Huntcliff, WALNUT, CA, 91789 Listing by BEN SITU


Frequently Asked Questions

When was property at 21040 Ambushers Street built and last sold?
The property at 21040 Ambushers Street was built in 1981 and last sold on Aug 21, 2017 for $1,038,000.
How much is this home worth?
The estimated value of the home located at 21040 Ambushers Street is $1,520,792.
What are some comparable homes to 21040 Ambushers Street?
There are currently no comparable homes to 21040 Ambushers Street.