21187 Ambushers St, Diamond Bar, CA 91765 Property Records

Los Angeles County property record for 21187 Ambushers St, Diamond Bar, CA 91765

Property Summary

Property Type	Single Family Home
Details	4 bd · 3 ba · 2,397 sqft · built 1981
Lot Size	0.28 acres (12,201 sqft)
Owner	2 Individual Names on Record
Last Sale	$1,518,181 (Jan 2026)
Tax Bill	$7,061 (2025)
Deeds & Mortgages	Nov 2024 Line of Credit Jan 2026 Sale & Mortgage
Flood Zone	Zone X (minimal risk)
APN	`8714-011-006`

Property Details

APN / Parcel Number

Primary APN	`8714-011-006`

Interior

Bedrooms	4 Beds
Full Baths	3 Baths
Total Rooms	12 Rooms
Stories	2 Stories
Building Area	2,397 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	12,201 sqft (0.28 acres)
Lot Dimensions	158 ft deep x 77 ft wide

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Central
Water Source	Commercial

Location & Zoning

Street Address	21187 AMBUSHERS ST
City	DIAMOND BAR
State	CA
Zip	91765-3734
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	LCR19000*
Legal Description	*TR=34160 LOT 14
Legal Subdivision	34160
Legal Tract	34160
Legal Block	2
Legal Lot Number	14
Jurisdiction	LOS ANGELES CA
Township / Civil Division	EAST SAN GABRIEL VALLEY
Census Block Group	2
Census Block	2017
Census Tract	403325

Owner

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	2 Individual Names on Record
Mailing Address	21187 AMBUSHERS ST, DIAMOND BAR, CA 91765-3734
Occupancy	Owner Occupied
Owner Type	Individual
Vesting	Community Property

Deeds, Mortgages & Sale History

Date	Document
Nov 12, 2024	Deed of Trust, Mortgage · Line of Credit BANNER BANK
Jan 16, 2026	Grant Deed, Transfer · Conventional Mortgage EAST WEST BANK

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Jan 16, 2026 · Amount on Record
Deed Sale	Jan 16, 2026 · Amount on Record
Prior Sale	Mar 14, 2025 · Amount on Record
Deed Document Number	202640759
Prior Transfer Date	Mar 4, 1999
Prior Transfer Doc	0000637957
Record Updated	Oct 29, 2026

November 2024: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	LOS ANGELES CA
Property Address	21187 AMBUSHERS ST, DIAMOND BAR, CA 91765-3734
Transaction Type	Mortgage
Record Updated	Jan 26, 2026

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	2822 OAK KNOLL DR, DIAMOND BAR, CA 91765-3664

Mortgage

Document Number	0000778960
Date	Nov 12, 2024
Instrument	24-0778960

Lender

Name	BANNER BANK
Type	Bank
Address	RANCHO CUCAMONGA, CA 91739

Agreement

Type	Line of Credit
Amount	Amount Recorded

Interest

Rate Type	Adjustable Rate
Change Frequency	Monthly

January 2026: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	LOS ANGELES CA
Recording Date	Jan 16, 2026
Property Address	21187 AMBUSHERS ST, DIAMOND BAR, CA 91765-3734
Document Number	0000040759
Map Reference	MB 900 PG 20-25
Instrument Date	Dec 8, 2025
Instrument	26-0040759
Transaction Type	Transfer
Record Updated	Jan 26, 2026
Title Company	LAWYERS TITLE

Transaction

Amount	Amount Recorded
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV 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
Relationship	Community Property with Right of Survivorship
Address	21187 AMBUSHERS ST, DIAMOND BAR, CA 91765-3734

Mortgage

Document Number	0000040760
Date	Jan 16, 2026
Instrument	26-0040760

Lender

Name	EAST WEST BANK
Type	Bank

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	361 Months
Due	Feb 1, 2056

Interest

Rate Type	Adjustable Rate
Rate	6.12%
Type Change Date	Feb 1, 2031
Change Frequency	Annually
Min Rate At Change	4.12%
Max Rate At Change	8.12%
Index	1-Year T-Bill
Max Rate	12.1%

Tax Assessment & Valuation

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		$1,224,000 (+140.25%) Land $856,800 Building $367,200
2025	$7,061.00 (+9.9%)	$509,479 (+4.04%) Land $205,983 Building $303,496
2023	$6,425.00 (+2.9%)	$489,698 Land $197,986 Building $291,712
2022	$6,244.00

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

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

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

Wildfire Risk	Moderate above 48% of the US · lower than 71% of California
Wildfire Likelihood	0.08% 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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