21499 Ambushers St, Diamond Bar, CA 91765 Property Records

Los Angeles County property record for 21499 Ambushers St, Diamond Bar, CA 91765

Property Summary

Property Type	Single Family Home
Details	4 bd · 3 ba · 2,722 sqft · built 1981
Lot Size	0.211 acres (9,177 sqft)
Owner	Individual Name on File
Last Sale	$840,000 (Mar 2020)
Tax Bill	$11,747 (2025)
Deeds & Mortgages	Apr 2021 Mortgage Mar 2020 Sale
Flood Zone	Zone X (minimal risk)
APN	`8714-002-015`

Property Details

APN / Parcel Number

Primary APN	`8714-002-015`

Interior

Bedrooms	4 Beds
Full Baths	3 Baths
Total Rooms	12 Rooms
Stories	2 Stories
Building Area	2,722 sqft Living Area
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1981
Effective Year Built	Effective 1981
Architectural Style	Conventional
Exterior Material	Stucco
Construction Type	Wood
Roof Type	Gable
Roof Material	Tile
Lot Area	9,177 sqft (0.211 acres)
Lot Dimensions	112 ft deep x 82 ft wide

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Central

Location & Zoning

Street Address	21499 AMBUSHERS ST
City	DIAMOND BAR
State	CA
Zip	91765-3804
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	LCR19000*
Legal Description	*TR=34160 LOT 1
Legal Subdivision	34160
Legal Tract	34160
Legal Block	2
Legal Lot Number	1
Jurisdiction	LOS ANGELES CA
Township / Civil Division	EAST SAN GABRIEL VALLEY
Census Block Group	2
Census Block	2017
Census Tract	403325

Owner

21499 Ambushers St is owned and occupied by an individual who bought it in March 2020.

Source: Los Angeles County records, as of August 25, 2026

Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.

Owner of Record	Individual Name on File
Mailing Address	21499 AMBUSHERS ST, DIAMOND BAR, CA 91765-3804
Occupancy	Owner Occupied
Owner Type	Individual

Deeds, Mortgages & Sale History

Date	Document
Apr 20, 2021	Deed of Trust, Mortgage · Conventional Mortgage SUMMIT MORTGAGE BANKERS INC
Mar 18, 2020	Grant Deed, Transfer STEWART TITLE

Assessor's Deed Record

Deed Names	Name on Deed
Last Sale	Mar 18, 2020 · Amount on File
Deed Sale	Mar 18, 2020 · Amount on File
Prior Sale	Sep 25, 2012 · Amount on File
Deed Document Number	2020316749
Transfer Doc	0000855984
Record Updated	Oct 29, 2026

April 2021: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	LOS ANGELES CA
Property Address	21499 AMBUSHERS ST, DIAMOND BAR, CA 91765-3804
Transaction Type	Mortgage
Record Updated	Apr 28, 2021
Title Company	FIDELITY NATIONAL TITLE COMPANY LONG B, FIDELITY NATL TTL CO LONG BE

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	21499 AMBUSHERS ST, DIAMOND BAR, CA 91765-3804

Mortgage

Document Number	0000619503
Date	Apr 20, 2021
Instrument	21-0619503

Lender

Name	SUMMIT MORTGAGE BANKERS INC
Type	Mortgage Company
Address	FLUSHING, NY 11354

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	361 Months
Due	May 1, 2051

March 2020: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	LOS ANGELES CA
Recording Date	Mar 18, 2020
Property Address	21499 AMBUSHERS ST, DIAMOND BAR, CA 91765-3804
Document Number	0000316749
Instrument Date	Feb 18, 2020
Instrument	316749
Transaction Type	Transfer
Record Updated	Mar 30, 2020
Title Company	STEWART TITLE

Transaction

Amount	Amount on Record
Tax	$924.00
Amount Accuracy	Full Value
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	2320 STANLEY AVE SIGNAL HILL CA 907553814, SIGNAL HILL, CA 90755-3814

Tax Assessment & Valuation

The 2025 property tax bill for 21499 Ambushers St was $11,747.

Source: Los Angeles County assessment roll, as of August 25, 2026

Property Jurisdictions

Type	Name
State	California
County	Los Angeles County
Municipality	Diamond Bar City
Unified School District	Walnut Valley Unified School District (KG - 12)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value
2026		$937,029 (+2%) Land $556,529 Building $380,500
2025	$11,747.00	$918,657 Land $545,617 Building $373,040
2023	$10,866.00 (+2.1%)	$882,986 Land $524,431 Building $358,555
2022	$10,642.00

Assessed value is set for property tax purposes and is not a market price estimate.

Flood

FEMA maps place 21499 Ambushers St in Zone X, an area of minimal flood risk.

Source: FEMA National Flood Hazard Layer, effective September 30, 2026

FEMA Flood Zone	Zone X minimal risk
Flood Insurance Requirement	Not required lenders may require it

Values are read at the parcel center point; lenders make the official flood determination.

Wildfire

Wildfire risk around 21499 Ambushers St is moderate, ranking above 44% of the US, with a 0.06% annual chance of wildfire.

Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024

Wildfire Risk	Moderate above 44% of the US · lower than 74% of California
Wildfire Likelihood	0.06% annual chance
Exposure	Indirect within ember reach

Values cover an area roughly 900 ft across, not the parcel itself; insurers use their own ratings.

Drinking Water

Source: EPA Safe Drinking Water Information System, as of September 2026

Water System	WALNUT VALLEY WATER DISTRICT serves 100,941 people · EPA ID CA1910234
Water Source	Purchased surface water from several systems
Last State Inspection	Jun 2023
Lead	Under 1 ppb (2022–2024) action level 15 ppb

Violations Reported to EPA

Water Quality	None last 10 years
Treatment and Procedure	None last 10 years
Monitoring and Reporting	None last 3 years

Results are for the whole water system, not water tested at this address; lead at the tap also depends on the building's own pipes.

Internet Providers

Source: FCC Broadband Data Collection, based on 565 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
Spectrum Cable · Fiber in parts of the area	1,000 / 1,000
T-Mobile Fixed Wireless	100 / 20
AT&T Fixed Wireless	100 / 20

May also be available: Frontier, Verizon.

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