3109 Windmill Dr, Diamond Bar, CA 91765 Property Records

Los Angeles County property record for 3109 Windmill Dr, Diamond Bar, CA 91765

Property Summary

Property Type	Single Family Home
Details	6 bd · 8 ba · 8,230 sqft · built 2004
Lot Size	1.77 acres (77,407 sqft)
Owner	2 Company Names on Record
Last Sale	$1,963,000 (Mar 2004)
Tax Bill	$36,571 (2025)
Deeds & Mortgages	Jan 2022 Transfer Jan 2022 Transfer + 4 more
Flood Zone	Zone X (minimal risk)
APN	`8713-021-036`

Property Details

APN / Parcel Number

Primary APN	`8713-021-036`

Interior

Bedrooms	6 Beds
Full Baths	8 Baths
Building Area	8,230 sqft Living Area

Exterior

Year Built	Built 2004
Effective Year Built	Effective 2004
Construction Type	Wood
Lot Area	77,407 sqft

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Central

Location & Zoning

Street Address	3109 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 6
Legal Subdivision	50314
Legal Tract	50314
Legal Block	1
Legal Lot Number	6
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, 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 Company Names on Record
Mailing Address	3109 WINDMILL DR, DIAMOND BAR, CA 91765-3671
Occupancy	Owner Occupied
Owner Type	Company
Vesting	Trust, Family Trust

Deeds, Mortgages & Sale History

Date	Document
Jan 3, 2022	Intrafamily Transfer, Transfer
Jan 3, 2022	Intrafamily Transfer, Transfer
Apr 16, 2021	Intrafamily Transfer, Transfer
Oct 20, 2017	Deed of Trust, Mortgage · Conventional Mortgage MEGA CAPITAL FUNDING INC
Sep 27, 2019	Deed of Trust, Mortgage · Line of Credit HANMI BANK
Dec 9, 2020	Deed of Trust, Mortgage · Conventional Mortgage UNITED WHOLESALE MORTGAGE

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Mar 17, 2004 · Amount on Record
Deed Sale	Mar 17, 2004 · Amount on Record
Deed Document Number	2004632505
Last Transfer Date	Mar 19, 2021
Transfer Doc	0000607673
Record Updated	Oct 29, 2026

January 2022: Intrafamily Transfer, Transfer

Document Type	Intrafamily Transfer
Jurisdiction	LOS ANGELES CA
Recording Date	Jan 3, 2022
Property Address	3109 WINDMILL DR, DIAMOND BAR, CA 91765-3671
Document Number	0000003990
Map Reference	MB 1257 PG 83-87
Instrument Date	Dec 3, 2021
Instrument	22-0003990
Transaction Type	Transfer
Record Updated	Jan 27, 2022

Transaction

Tax	$0.00
Amount Accuracy	Transfer Tax Exempt
Additional	Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Community Property with Right of Survivorship
Address	3109 WINDMILL DR, DIAMOND BAR, CA 91765-3671

January 2022: Intrafamily Transfer, Transfer

Document Type	Intrafamily Transfer
Jurisdiction	LOS ANGELES CA
Recording Date	Jan 3, 2022
Property Address	3109 WINDMILL DR, DIAMOND BAR, CA 91765-3671
Document Number	0000003991
Map Reference	MB 1257 PG 83-87
Instrument Date	Dec 3, 2021
Instrument	22-0003991
Transaction Type	Transfer
Record Updated	Jun 7, 2023

Transaction

Tax	$0.00
Amount Accuracy	Transfer Tax Exempt
Additional	Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Family Living Trust
Address	3109 WINDMILL DR, DIAMOND BAR, CA 91765-3671

April 2021: Intrafamily Transfer, Transfer

Document Type	Intrafamily Transfer
Jurisdiction	LOS ANGELES CA
Recording Date	Apr 16, 2021
Property Address	3109 WINDMILL DR, DIAMOND BAR, CA 91765-3671
Document Number	0000607673
Map Reference	MB 1257 PG 83-87
Instrument Date	Mar 19, 2021
Instrument	21-0607673
Transaction Type	Transfer
Record Updated	Sep 22, 2021

Transaction

Tax	$0.00
Amount Accuracy	Transfer Tax Exempt
Additional	Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Joint Tenants
Address	3109 WINDMILL DR, DIAMOND BAR, CA 91765-3671

October 2017: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	LOS ANGELES CA
Property Address	3109 WINDMILL DR, DIAMOND BAR, CA 91765-3671
Transaction Type	Mortgage
Record Updated	Feb 5, 2021
Title Company	NEXTITLE

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0001202795
Date	Oct 20, 2017
Instrument	17-1202795

Lender

Name	MEGA CAPITAL FUNDING INC
Type	Mortgage Company
Address	CALABASAS, CA 91302

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	181 Months
Due	Nov 1, 2032

September 2019: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	LOS ANGELES CA
Property Address	3109 WINDMILL DR, DIAMOND BAR, CA 91765-3671
Transaction Type	Mortgage
Record Updated	Feb 5, 2021
Title Company	NORTH AMERICAN TITLE

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0001019614
Date	Sep 27, 2019
Instrument	19-1019614

Lender

Name	HANMI BANK
Type	Bank
Address	LOS ANGELES, CA 90015

Agreement

Type	Line of Credit
Amount	Amount Recorded

Interest

Rate Type	Adjustable Rate
Change Frequency	Monthly

December 2020: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	LOS ANGELES CA
Property Address	3109 WINDMILL DR, DIAMOND BAR, CA 91765-3671
Transaction Type	Mortgage
Record Updated	Feb 5, 2021
Title Company	EQUITY TITLE CO

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	3109 WINDMILL DR, DIAMOND BAR, CA 91765-3671

Mortgage

Document Number	0001606420
Date	Dec 9, 2020
Instrument	20-1606420

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

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		$2,983,323 (+2%) Land $1,305,200 Building $1,678,123
2025	$36,571.00 (+4.95%) Homeowner's exemption	$2,924,827 (+4.04%) Land $1,279,608 Building $1,645,219
2024	$34,847.00 (+2.61%)
2023	$33,961.00 (+2.21%) Homeowner's exemption	$2,811,254 Land $1,229,920 Building $1,581,334
2022	$33,226.00

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 76% of the US · above 53% 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.

Nearby Properties on Windmill Dr

Nearby Streets

Search Property Records by Address or Parcel Number

Search by:

By searching, you agree to: Terms • Privacy • Disclosures