21533 Ambushers St, Diamond Bar, CA 91765 Property Records

Los Angeles County property record for 21533 Ambushers St, Diamond Bar, CA 91765

Property Summary

Property Type	Single Family Home
Details	3 bd · 3 ba · 3,026 sqft · built 1978
Lot Size	0.211 acres (9,206 sqft)
Owner	Individual Name on File
Last Sale	$1,475,000 (Oct 2025)
Tax Bill	$8,877 (2025)
Deeds & Mortgages	Oct 2025 Transfer Oct 2025 Sale + 1 more
Flood Zone	Zone X (minimal risk)
APN	`8714-003-013`

Property Details

APN / Parcel Number

Primary APN	`8714-003-013`
Alternative APN	`5090029089`

Interior

Bedrooms	3 Beds
Full Baths	3 Baths
Total Rooms	9 Rooms
Building Area	3,026 sqft Living Area
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1978
Effective Year Built	Effective 1978
Architectural Style	Contemporary
Exterior Material	Stucco
Construction Type	Wood
Roof Material	Wood Shingle
Lot Area	9,206 sqft (0.211 acres)

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Central
Sewer	Municipal
Water Source	Commercial

Location & Zoning

Street Address	21533 AMBUSHERS ST
City	DIAMOND BAR
State	CA
Zip	91765-3806
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	LCR19000*
Legal Description	*TR=33205 LOT 4
Legal Subdivision	33205
Legal Tract	33205
Legal Block	2
Legal Lot Number	4
Jurisdiction	LOS ANGELES CA
Township / Civil Division	EAST SAN GABRIEL VALLEY
Census Block Group	2
Census Block	2023
Census Tract	403325

Owner

21533 Ambushers St is owned by an individual who bought it in October 2025.

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

Owner of Record	Individual Name on File
Mailing Address	4694 S ROGERS WAY, ONTARIO, CA 91762-4394
Owner Type	Individual
Vesting	Sole Owner

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

Deeds, Mortgages & Sale History

Date	Document
Oct 14, 2025	Quit Claim Deed, Transfer CALIFORNIA BEST TITLE CO, CALIFORNIA BEST TITLE
Oct 14, 2025	Grant Deed, Transfer CALIFORNIA BEST TITLE CO, CALIFORNIA BEST TITLE
Jul 2, 2018	Quit Claim Deed, Transfer Quitclaim

Assessor's Deed Record

Deed Names	Name on Deed
Last Sale	Oct 14, 2025 · Amount on File
Deed Sale	Oct 14, 2025 · Amount on File
Prior Sale	Jun 18, 2002 · Amount on File
Deed Document Number	2025705232
Prior Transfer Date	Oct 10, 1997
Prior Transfer Doc	0001732132
Record Updated	Oct 29, 2026

October 2025: Quit Claim Deed, Transfer

Document Type	Quit Claim Deed
Jurisdiction	LOS ANGELES CA
Recording Date	Oct 14, 2025
Property Address	21533 AMBUSHERS ST, DIAMOND BAR, CA 91765-3806
Document Number	0000705233
Map Reference	MB 878 PG 94-96
Instrument Date	Oct 6, 2025
Instrument	25-0705233
Transaction Type	Transfer
Record Updated	Oct 23, 2025
Title Company	CALIFORNIA BEST TITLE CO, CALIFORNIA BEST TITLE

Transaction

Tax	$0.00
Amount Accuracy	Transfer Tax Exempt
Additional	Quitclaim Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	4694 S ROGERS WAY, ONTARIO, CA 91762-4394

October 2025: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	LOS ANGELES CA
Recording Date	Oct 14, 2025
Property Address	21533 AMBUSHERS ST, DIAMOND BAR, CA 91765-3806
Document Number	0000705232
Map Reference	MB 878 PG 94-96
Instrument Date	Oct 6, 2025
Instrument	25-0705232
Transaction Type	Transfer
Record Updated	Oct 23, 2025
Title Company	CALIFORNIA BEST TITLE CO, CALIFORNIA BEST TITLE

Transaction

Amount	Amount on Record
Tax	$0.00
Amount Accuracy	Rounded by County
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	4694 S ROGERS WAY, ONTARIO, CA 91762-4394

July 2018: Quit Claim Deed, Transfer

Document Type	Quit Claim Deed
Jurisdiction	LOS ANGELES CA
Recording Date	Jul 2, 2018
Property Address	21533 AMBUSHERS ST, DIAMOND BAR, CA 91765-3806
Document Number	0000659533
Instrument Date	Jun 11, 2018
Instrument	659533
Transaction Type	Transfer
Record Updated	Jul 17, 2018

Transaction

Tax	$0.00
Additional	Quitclaim Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Company
Address	746 SUNRISE DR E VISTA CA 920846447, VISTA, CA 92084-6447

Tax Assessment & Valuation

The 2025 property tax bill for 21533 Ambushers St was $8,877.

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		$1,475,000 (+120.41%) Land $1,001,200 Building $473,800
2025	$8,877.00	$669,195 Land $274,325 Building $394,870
2023	$8,172.00 (+2.1%)	$643,212 Land $263,674 Building $379,538
2022	$8,004.00

Assessed value and assessed market value are set for property tax purposes, not market price estimates; both are a fraction of this property's market value.

Flood

FEMA maps place 21533 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 21533 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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