645 Big Falls Dr, Diamond Bar, CA 91765 Property Records

Los Angeles County property record for 645 Big Falls Dr, Diamond Bar, CA 91765

Property Summary

Property Type	Single Family Home
Details	6 bd · 3 ba · 2,749 sqft · built 1964
Lot Size	0.177 acres (7,713 sqft)
Owner	Individual Name on File
Last Sale	$777,000 (Dec 2020)
Tax Bill	$11,491 (2025)
Deeds & Mortgages	Dec 2020 Sale & Mortgage Jan 2019 Transfer + 1 more
Flood Zone	Zone X (minimal risk)
APN	`8718-004-016`

Property Details

APN / Parcel Number

Primary APN	`8718-004-016`

Interior

Bedrooms	6 Beds
Full Baths	3 Baths
Total Rooms	12 Rooms
Stories	2 Stories
Building Area	2,749 sqft Living Area
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1964
Effective Year Built	Effective 1970
Architectural Style	Conventional
Exterior Material	Stucco
Construction Type	Wood
Roof Type	Gable
Roof Material	Wood Shingle
Lot Area	7,713 sqft (0.177 acres)
Lot Dimensions	99 ft deep x 84 ft wide

Utilities, Heating & Cooling

Heating System	Central

Location & Zoning

Street Address	645 BIG FALLS DR
City	DIAMOND BAR
State	CA
Zip	91765-1002
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	LCR18000*
Legal Description	TRACT NO 25645 LOT 28
Legal Subdivision	25645
Legal Tract	25645
Legal Block	1
Legal Lot Number	28
Jurisdiction	LOS ANGELES CA
Township / Civil Division	EAST SAN GABRIEL VALLEY
Census Block Group	1
Census Block	1000
Census Tract	403327

Owner

645 Big Falls Dr is owned by an individual who bought it in December 2020.

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

Owner of Record	Individual Name on File
Mailing Address	1912 SALEROSO DR, ROWLAND HEIGHTS, CA 91748-4115
Owner Type	Individual

Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.

Deeds, Mortgages & Sale History

Date	Document
Dec 11, 2020	Grant Deed, Transfer · Conventional Mortgage CATHAY BANK
Jan 29, 2019	Affidavit of Death, Transfer
Jan 23, 2019	Quit Claim Deed, Transfer Quitclaim

Assessor's Deed Record

Deed Names	Name on Deed
Last Sale	Dec 11, 2020 · Amount on File
Deed Sale	Dec 11, 2020 · Amount on File
Deed Document Number	20201636104
Prior Transfer Date	May 18, 2017
Prior Transfer Doc	0000067594
Record Updated	Oct 29, 2026

December 2020: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	LOS ANGELES CA
Recording Date	Dec 11, 2020
Property Address	645 BIG FALLS DR, DIAMOND BAR, CA 91765-1002
Document Number	0001636104
Map Reference	MB 709 PG 38-40
Instrument Date	Oct 6, 2020
Instrument	20-1636104
Transaction Type	Transfer
Record Updated	Sep 22, 2021
Title Company	TICOR TITLE COMPANY OF CA

Transaction

Amount	Amount on Record
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
Address	645 BIG FALLS DR, DIAMOND BAR, CA 91765-1002

Mortgage

Document Number	0001636105
Date	Dec 11, 2020
Instrument	20-1636105

Lender

Name	CATHAY BANK
Type	Bank

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	361 Months
Due	Jan 1, 2051

Interest

Rate Type	Adjustable Rate
Rate	4.5%
Type Change Date	Jan 1, 2026
Change Frequency	Annually
Min Rate At Change	2.75%
Max Rate At Change	10.5%
Index	1-Year CMT
Max Rate	10.5%

January 2019: Affidavit of Death, Transfer

Document Type	Affidavit of Death
Jurisdiction	LOS ANGELES CA
Recording Date	Jan 29, 2019
Property Address	645 BIG FALLS DR, DIAMOND BAR, CA 91765-1002
Document Number	0000082561
Instrument Date	Jan 10, 2019
Instrument	82561
Transaction Type	Transfer
Record Updated	Feb 5, 2019

Transaction

Tax	$0.00
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Revocable Trust
Address	645 BIG FALLS DR DIAMOND BAR CA 917651002, DIAMOND BAR, CA 91765-1002

January 2019: Quit Claim Deed, Transfer

Document Type	Quit Claim Deed
Jurisdiction	LOS ANGELES CA
Recording Date	Jan 23, 2019
Property Address	645 BIG FALLS DR, DIAMOND BAR, CA 91765-1002
Document Number	0000067594
Instrument Date	May 18, 2017
Instrument	67594
Transaction Type	Transfer
Record Updated	Feb 6, 2019

Transaction

Tax	$0.00
Additional	Quitclaim Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Revocable Trust
Address	645 BIG FALLS DR DIAMOND BAR CA 917651002, DIAMOND BAR, CA 91765-1002

Tax Assessment & Valuation

The 2025 property tax bill for 645 Big Falls Dr was $11,491.

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		$857,867 (+2%) Land $608,237 Building $249,630
2025	$11,491.00	$841,047 Land $596,311 Building $244,736
2023	$10,325.00 (+1.54%)	$808,390 Land $573,156 Building $235,234
2022	$10,168.00

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

Flood

FEMA maps place 645 Big Falls Dr in Zone X, an area of minimal flood risk.

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

Wildfire risk around 645 Big Falls Dr is low, with less than a 0.01% annual chance of wildfire.

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

Wildfire Risk	Low lower than 98% of the US · lower than 98.4% of California
Wildfire Likelihood	Under 0.01% annual chance
Exposure	None beyond 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 216 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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