427 Willapa Ln, Diamond Bar, CA 91765 Property Records

Los Angeles County property record for 427 Willapa Ln, Diamond Bar, CA 91765

Property Summary

Property Type	Single Family Home
Details	4 bd · 2 ba · 1,552 sqft · built 1964
Lot Size	0.248 acres (10,796 sqft)
Owner	2 Individual Names on Record
Last Sale	$540,000 (Aug 2019)
Tax Bill	$8,202 (2025)
Deeds & Mortgages	Jul 2020 Mortgage Aug 2019 Sale & Mortgage + 4 more
Flood Zone	Zone X (minimal risk)
APN	`8703-017-003`

Property Details

APN / Parcel Number

Primary APN	`8703-017-003`

Interior

Bedrooms	4 Beds
Full Baths	2 Baths
Total Rooms	9 Rooms
Stories	1 Story
Building Area	1,552 sqft Living Area
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1964
Effective Year Built	Effective 1964
Architectural Style	Conventional
Exterior Material	Stucco
Construction Type	Wood
Roof Type	Gable
Roof Material	Wood Shingle
Lot Area	10,796 sqft (0.248 acres)
Lot Dimensions	127 ft deep x 85 ft wide

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Central

Location & Zoning

Street Address	427 WILLAPA LN
City	DIAMOND BAR
State	CA
Zip	91765-1357
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	LCR18000*
Legal Description	TRACT NO 27530 LOT 26
Legal Subdivision	27530
Legal Tract	27530
Legal Block	3
Legal Lot Number	26
Jurisdiction	LOS ANGELES CA
Township / Civil Division	EAST SAN GABRIEL VALLEY
Census Block Group	3
Census Block	3007
Census Tract	403316

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	1136 WALNUT ST, SAN GABRIEL, CA 91776-3017
Owner Type	Individual

Deeds, Mortgages & Sale History

Date	Document
Jul 13, 2020	Deed of Trust, Mortgage · Conventional Mortgage BNB FINANCIAL INC BNB FINANCIAL INC
Aug 26, 2019	Grant Deed, Transfer · Conventional Mortgage FAIRWAY INDEPENDENT MORTGAGE CORP
Jun 29, 2018	Deed of Trust, Mortgage · Conventional Mortgage ZHONG Q & JIADAN WANG
Feb 1, 2018	Trustee's Deed, Construction Loan · Construction Mortgage ABC FIRST INC
Sep 15, 2017	Deed of Trust, Mortgage · Line of Credit BANK OF AMERICA
Jun 26, 2017	Quit Claim Deed, Transfer Quitclaim

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Aug 26, 2019 · Amount on Record
Deed Sale	Aug 26, 2019 · Amount on Record
Prior Sale	Jan 26, 2015 · Amount on Record
Deed Document Number	2019858474
Prior Transfer Date	Apr 13, 2017
Prior Transfer Doc	0000706074
Record Updated	Oct 29, 2026

July 2020: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	LOS ANGELES CA
Property Address	427 WILLAPA LN, DIAMOND BAR, CA 91765-1357
Document Number	0000808975
Instrument Date	Jul 13, 2020
Transaction Type	Mortgage
Record Updated	Jul 28, 2020
Title Company	PROVIDENT TITLE

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Community Property
Address	1136 WALNUT ST SAN GABRIEL CA 917763017, SAN GABRIEL, CA 91776-3017

Mortgage

Document Number	0000808975
Date	Jul 21, 2020
Instrument	808975

Lender

Name	BNB FINANCIAL INC BNB FINANCIAL INC
Type	Bank
Address	GLENDALE, CA 91203

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	360 Months
Due	Jul 20, 2050

August 2019: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	LOS ANGELES CA
Recording Date	Aug 26, 2019
Property Address	427 WILLAPA LN, DIAMOND BAR, CA 91765-1357
Document Number	0000858474
Map Reference	MB 714 PG 76-80
Instrument Date	Jul 1, 2019
Instrument	19-0858474
Transaction Type	Transfer
Record Updated	Jul 20, 2022
Title Company	FIDELITY NATIONAL TITLE CO

Transaction

Amount	Amount Recorded
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
Relationship	Community Property with Right of Survivorship
Address	1136 WALNUT ST, SAN GABRIEL, CA 91776-3017

Mortgage

Document Number	0000858475
Date	Aug 26, 2019
Instrument	19-0858475

Lender

Name	FAIRWAY INDEPENDENT MORTGAGE CORP
Type	Mortgage Company

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	361 Months
Due	Sep 1, 2049

June 2018: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	LOS ANGELES CA
Property Address	427 WILLAPA LN, DIAMOND BAR, CA 91765-1357
Document Number	0000655574
Instrument Date	Jun 29, 2018
Transaction Type	Mortgage
Record Updated	Jul 17, 2018

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	427 WILLAPA LN DIAMOND BAR CA 917651357, DIAMOND BAR, CA 91765-1357

Mortgage

Document Number	0000655574
Date	Jun 29, 2018
Instrument	655574

Lender

Name	ZHONG Q & JIADAN WANG
Address	4611 MONTEREY AVE, BALDWIN PARK, CA 91706-2364

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded

February 2018: Trustee's Deed, Construction Loan

Document Type	Trustee's Deed
Jurisdiction	LOS ANGELES CA
Recording Date	Feb 1, 2018
Property Address	427 WILLAPA LN, DIAMOND BAR, CA 91765-1357
Instrument Date	Feb 1, 2018
Instrument	110929
Transaction Type	Construction Loan
Record Updated	Feb 14, 2018

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	427 WILLAPA LN DIAMOND BAR CA 917651357, DIAMOND BAR, CA 91765-1357

Mortgage

Document Number	0000110929
Date	Feb 1, 2018
Instrument	110929

Lender

Name	ABC FIRST INC
Address	17890 CASTLETON ST # 100, CITY OF INDUSTRY, CA 91748-5785

Agreement

Type	Construction Mortgage
Amount	Amount Recorded
Term	12 Months
Due	Jan 31, 2019

September 2017: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	LOS ANGELES CA
Property Address	427 WILLAPA LN, DIAMOND BAR, CA 91765-1357
Document Number	0001109368
Instrument Date	Sep 15, 2017
Transaction Type	Mortgage
Record Updated	Oct 2, 2017
Title Company	AMERICAN TITLE COMPANY, AMERICAN TITLE INC

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	427 WILLAPA LN DIAMOND BAR CA 917651357, DIAMOND BAR, CA 91765-1357

Mortgage

Document Number	0001109368
Date	Sep 27, 2017
Instrument	1109368

Lender

Name	BANK OF AMERICA
Type	Bank
Address	TAMPA, FL 33634

Agreement

Type	Line of Credit
Amount	Amount Recorded

Interest

Rate Type	Adjustable Rate

June 2017: Quit Claim Deed, Transfer

Document Type	Quit Claim Deed
Jurisdiction	LOS ANGELES CA
Recording Date	Jun 26, 2017
Property Address	427 WILLAPA LN, DIAMOND BAR, CA 91765-1357
Document Number	0000706074
Instrument Date	Apr 13, 2017
Instrument	706074
Transaction Type	Transfer
Record Updated	Jun 30, 2017

Transaction

Tax	$0.00
Additional	Quitclaim Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	427 WILLAPA LN DIAMOND BAR CA 917651357, DIAMOND BAR, CA 91765-1357

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		$602,375 (+2%) Land $481,902 Building $120,473
2025	$8,202.00 (+10.24%)	$590,564 (+4.04%) Land $472,453 Building $118,111
2023	$7,440.00 (+1.56%)	$567,634 Land $454,108 Building $113,526
2022	$7,326.00

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 · OpenFEMA NFIP redacted claims and policies, as of September 2026

FEMA Flood Zone	Zone X minimal risk
Flood Insurance Requirement	Not required lenders may require it
Nearby Flood Claims	1 (1980)
Most Recent Claim	Feb 1980 · rainfall accumulation

Values are read at the parcel center point; flood claims are located to the census block group, not this parcel; lenders make the official flood determination.

Wildfire

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

Wildfire Risk	Low lower than 80% of the US · lower than 88% of California
Wildfire Likelihood	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 414 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
Frontier Fiber	7,000 / 7,000
Spectrum Cable · Fiber in parts of the area	1,000 / 1,000
Verizon Fixed Wireless	300 / 20
Starlink Satellite	280 / 30
AT&T Fixed Wireless	100 / 20
T-Mobile Fixed Wireless	100 / 20

May also be available: GeoLinks.

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