3129 Windmill Dr, Diamond Bar, CA 91765 Property Records

Los Angeles County property record for 3129 Windmill Dr, Diamond Bar, CA 91765

Property Summary

Property Type	Single Family Home
Details	5 bd · 4 ba · 8,788 sqft · built 2006
Lot Size	1.79 acres (78,117 sqft)
Owner	Company Name on File
Last Sale	$3,960,000 (Feb 2010)
Tax Bill	$62,202 (2025)
Deeds & Mortgages	May 2021 Mortgage
Flood Zone	Zone X (minimal risk)
APN	`8713-021-038`

Property Details

APN / Parcel Number

Primary APN	`8713-021-038`

Interior

Bedrooms	5 Beds
Full Baths	4 Baths
Building Area	8,788 sqft Living Area

Exterior

Year Built	Built 2006
Effective Year Built	Effective 2006
Construction Type	Wood
Lot Area	78,117 sqft

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Central

Location & Zoning

Street Address	3129 WINDMILL DR
City	DIAMOND BAR
State	CA
Zip	91765-3671
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	LCR120000*
Legal Description	TR=50314 LOT 8
Legal Subdivision	50314
Legal Tract	50314
Legal Block	1
Legal Lot Number	8
Jurisdiction	LOS ANGELES CA
Township / Civil Division	EAST SAN GABRIEL VALLEY
Census Block Group	1
Census Block	1005
Census Tract	403324

Owner

Source: Los Angeles County records · APN 8713-021-038

Assessment roll updated May 21, 2026 · Last verified June 2026

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

Owner of Record	Company Name on File
Mailing Address	3129 WINDMILL DR, DIAMOND BAR, CA 91765-3671
Owner Type	Company
Vesting	Company

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	Verified Name on Deed
Last Sale	Feb 11, 2010 · Amount on Record
Deed Sale	Feb 11, 2010 · Amount on Record
Prior Sale	Dec 22, 2006
Deed Document Number	2010191903
Record Updated	Sep 20, 2026

May 2021: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	LOS ANGELES CA
Property Address	3129 WINDMILL DR, DIAMOND BAR, CA 91765-3671
Transaction Type	Mortgage
Record Updated	Jun 07, 2021
Title Company	STEWART TITLE, STEWART TITLE OF CA INC

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	10808 6TH ST, RANCHO CUCAMONGA, CA 91730-5902

Mortgage

Document Number	0000845758
Date	May 26, 2021
Instrument	21-0845758

Lender

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

Agreement

Amount	Amount Recorded

Interest

Rate Type	Adjustable Rate

Tax Assessment & Valuation

Source: Los Angeles County records · Assessment roll updated May 21, 2026 · Last verified June 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

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

Year	Tax Bill	Assessed Value
2025	$62,202.00 (+7.25%)	$5,111,654 (+4.04%) Land $1,290,817 Building $3,820,837
2023	$57,998.00 (+2.17%)	$4,913,164 Land $1,240,694 Building $3,672,470
2022	$56,765.00

Flood & Wildfire

Source: FEMA National Flood Hazard Layer as of September 30, 2026 · USDA Forest Service Wildfire Risk to Communities as of 2024 · Last verified October 2026

Flood

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

Wildfire

Wildfire Risk	High above 76% of the US · above 53% of California
Wildfire Likelihood	0.4% annual chance
Exposure	Direct burnable vegetation at the parcel

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

Internet Providers

Source: FCC Broadband Data Collection as of December 31, 2025 · Last verified October 2026

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

May also be available: California Internet, Frontier, Verizon.

Based on FCC filings for 234 locations within half a mile of this property.

Drinking Water

Source: EPA Safe Drinking Water Information System as of 2026 Q3 · EPA water system boundaries as of March 2026 · Last verified October 2026

Water System	WALNUT VALLEY WATER DISTRICT serves 100,941 people
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 as reported to EPA, not water tested at this address; lead at the tap also depends on the building's own pipes. The full violation and enforcement history is in the system's EPA record.