525 Jon Ct, Diamond Bar, CA 91765 Property Records

Los Angeles County property record for 525 Jon Ct, Diamond Bar, CA 91765

Property Summary

Property Type	Single Family Home
Details	3 bd · 2 ba · 1,412 sqft · built 1987
Lot Size	0.185 acres (8,078 sqft)
Owner	2 Individual Names on Record
Last Sale	$550,000 (May 2014)
Tax Bill	$9,114 (2025)
Deeds & Mortgages	Apr 2020 Mortgage
Flood Zone	Zone X (minimal risk)
APN	`8281-038-025`

Property Details

APN / Parcel Number

Primary APN	`8281-038-025`

Interior

Bedrooms	3 Beds
Full Baths	2 Baths
Building Area	1,412 sqft Living Area

Exterior

Year Built	Built 1987
Effective Year Built	Effective 1987
Construction Type	Wood
Lot Area	8,078 sqft (0.185 acres)

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Central

Location & Zoning

Street Address	525 JON CT
City	DIAMOND BAR
State	CA
Zip	91765-1851
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	LCR115000-
Legal Description	TR=42579 LOT 39
Legal Subdivision	42579
Legal Tract	42579
Legal Block	1
Legal Lot Number	39
Jurisdiction	LOS ANGELES CA
Township / Civil Division	EAST SAN GABRIEL VALLEY
Census Block Group	1
Census Block	1000
Census Tract	403321

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	525 JON CT, DIAMOND BAR, CA 91765-1851
Occupancy	Owner Occupied
Owner Type	Individual

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	May 16, 2014 · Amount on Record
Deed Sale	May 16, 2014 · Amount on Record
Prior Sale	Mar 10, 1998 · Amount on Record
Deed Document Number	2014511032
Prior Transfer Date	Dec 18, 1997
Prior Transfer Doc	0002011751
Record Updated	Oct 29, 2026

April 2020: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	LOS ANGELES CA
Property Address	525 JON CT, DIAMOND BAR, CA 91765-1851
Document Number	0000497638
Instrument Date	Apr 24, 2020
Transaction Type	Mortgage
Record Updated	May 13, 2020
Title Company	WFG NATIONAL TITLE COMPANY, WFG NAT'L TITLE CO

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Joint Tenants with Right of Survivorship
Address	525 JON CT DIAMOND BAR CA 917651851, DIAMOND BAR, CA 91765-1851

Mortgage

Document Number	0000497638
Date	May 6, 2020
Instrument	497638

Lender

Name	ACG FUNDING INC ACG FUNDING INC
Type	Bank
Address	17590 COLIMA RD, ROWLAND HEIGHTS, CA 91748-1752

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	180 Months
Due	May 5, 2035

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	Pomona Unified School District (KG - 12)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value
2026		$687,694 (+2%) Land $534,655 Building $153,039
2025	$9,114.00 (+10.69%) Homeowner's exemption	$674,211 (+4.04%) Land $524,172 Building $150,039
2023	$8,234.00 (+1.59%) Homeowner's exemption	$648,033 Land $503,819 Building $144,214
2022	$8,105.00

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	Moderate above 46% of the US · lower than 72% of California
Wildfire Likelihood	0.08% 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 487 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
Frontier Fiber	7,000 / 7,000
Spectrum Cable	1,000 / 1,000
Verizon Fixed Wireless	300 / 20
T-Mobile Fixed Wireless	100 / 20
AT&T Fixed Wireless	100 / 20

May also be available: GeoLinks.

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