21643 High Bluff Rd, Diamond Bar, CA 91765 Property Records

Los Angeles County property record for 21643 High Bluff Rd, Diamond Bar, CA 91765

Property Summary

Property Type	Single Family Home
Details	3 bd · 3 ba · 2,712 sqft · built 1978
Lot Size	1.55 acres (67,573 sqft)
Owner	2 Individual Names on Record
Last Sale	$800,000 (Oct 2016)
Tax Bill	$12,053 (2025)
Deeds & Mortgages	Sep 2019 Mortgage Dec 2020 Mortgage + 1 more
Flood Zone	Zone X (minimal risk)
APN	`8714-008-022`

Property Details

APN / Parcel Number

Primary APN	`8714-008-022`

Interior

Bedrooms	3 Beds
Full Baths	3 Baths
Total Rooms	8 Rooms
Stories	2 Stories
Building Area	2,712 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	67,573 sqft
Garage Type	Attached
Pool Type	Spa / Hot Tub (No Pool)

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Central
Sewer	Municipal
Water Source	Commercial

Location & Zoning

Street Address	21643 HIGH BLUFF RD
City	DIAMOND BAR
State	CA
Zip	91765-3835
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	LCR19000*
Legal Description	*TR=33602 LOT 2
Legal Subdivision	33602
Legal Tract	33602
Legal Block	2
Legal Lot Number	2
Jurisdiction	LOS ANGELES CA
Township / Civil Division	EAST SAN GABRIEL VALLEY
Census Block Group	2
Census Block	2011
Census Tract	403325

Owner

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

Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.

Owner of Record	2 Individual Names on Record
Mailing Address	21643 HIGH BLUFF RD, DIAMOND BAR, CA 91765-3835
Occupancy	Owner Occupied
Owner Type	Individual
Vesting	Joint Tenants

Deeds, Mortgages & Sale History

Date	Document
Sep 4, 2019	Deed of Trust, Mortgage · Conventional Mortgage EAST WEST BANK
Dec 2, 2020	Deed of Trust, Mortgage · Conventional Mortgage UNITED WHOLESALE MORTGAGE
Nov 13, 2020	Quit Claim Deed, Transfer DIAMOND GLOBAL ESCROW INC

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Oct 24, 2016 · Amount on Record
Deed Sale	Oct 24, 2016 · Amount on Record
Prior Sale	Aug 18, 2004 · Amount on Record
Deed Document Number	20161303139
Prior Transfer Date	Nov 3, 1993
Prior Transfer Doc	0002204190
Record Updated	Oct 29, 2026

September 2019: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	LOS ANGELES CA
Property Address	21643 HIGH BLUFF RD, DIAMOND BAR, CA 91765-3835
Transaction Type	Mortgage
Record Updated	Feb 5, 2021
Title Company	WFG NATIONAL TITLE COMPANY

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0000903071
Date	Sep 4, 2019
Instrument	19-0903071

Lender

Name	EAST WEST BANK
Type	Bank
Address	EL MONTE, CA 91731

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	360 Months
Due	Sep 1, 2049

December 2020: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	LOS ANGELES CA
Property Address	21643 HIGH BLUFF RD, DIAMOND BAR, CA 91765-3835
Transaction Type	Mortgage
Record Updated	Feb 5, 2021

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	21643 HIGH BLUFF RD, DIAMOND BAR, CA 91765-3835

Mortgage

Document Number	0001564266
Date	Dec 2, 2020
Instrument	20-1564266

Lender

Name	UNITED WHOLESALE MORTGAGE
Type	Mortgage Company
Address	PONTIAC, MI 48341

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	360 Months
Due	Dec 1, 2050

November 2020: Quit Claim Deed, Transfer

Document Type	Quit Claim Deed
Jurisdiction	LOS ANGELES CA
Recording Date	Nov 13, 2020
Property Address	21643 HIGH BLUFF RD, DIAMOND BAR, CA 91765-3835
Document Number	0001451300
Instrument Date	Oct 12, 2020
Instrument	1451300
Transaction Type	Transfer
Record Updated	Nov 19, 2020
Title Company	DIAMOND GLOBAL ESCROW INC

Transaction

Tax	$0.00
Amount Accuracy	Full Value
Additional	Quitclaim Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Joint Tenants with Right of Survivorship
Address	21643 HIGH BLUFF RD DIAMOND BAR CA 917653835, DIAMOND BAR, CA 91765-3835

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		$947,032 (+2%) Land $473,516 Building $473,516
2025	$12,053.00 (+8.41%) Homeowner's exemption	$928,464 (+4.04%) Land $464,232 Building $464,232
2023	$11,118.00 (+2.55%) Homeowner's exemption	$892,412 Land $446,206 Building $446,206
2022	$10,842.00

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

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	High above 80% of the US · above 58% of California
Wildfire Likelihood	0.4% annual chance
Exposure	Direct burnable vegetation

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 234 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
Spectrum Cable	1,000 / 1,000
T-Mobile Fixed Wireless	100 / 20

May also be available: Frontier, GeoLinks, Verizon.

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