1157 Seneca Pl, Diamond Bar, CA 91765 Property Records

Los Angeles County property record for 1157 Seneca Pl, Diamond Bar, CA 91765

Property Summary

Property Type	Single Family Home
Details	4 bd · 3 ba · 3,082 sqft · built 1987
Lot Size	0.224 acres (9,747 sqft)
Owner	2 Trust Names on File
Last Sale	$432,000 (Jun 2000)
Tax Bill	$9,364 (2025)
Deeds & Mortgages	Feb 2019 Transfer
Flood Zone	Zone X (minimal risk)
APN	`8701-038-055`

Property Details

APN / Parcel Number

Primary APN	`8701-038-055`

Interior

Bedrooms	4 Beds
Full Baths	3 Baths
Building Area	3,082 sqft Living Area

Exterior

Year Built	Built 1987
Effective Year Built	Effective 1987
Construction Type	Wood
Lot Area	9,747 sqft (0.224 acres)
Lot Dimensions	160 ft deep x 61 ft wide
Garage Type	Attached

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Central

Location & Zoning

Street Address	1157 SENECA PL
City	DIAMOND BAR
State	CA
Zip	91765-4369
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	LCRPD20000
Legal Description	TR=42570 LOT 48
Legal Subdivision	42570
Legal Tract	42570
Legal Block	2
Legal Lot Number	48
Jurisdiction	LOS ANGELES CA
Township / Civil Division	EAST SAN GABRIEL VALLEY
Census Block Group	2
Census Block	2009
Census Tract	403320

Owner

1157 Seneca Pl is held in a trust since January 2019.

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

Owner of Record	2 Trust Names on File
Mailing Address	1157 SENECA PL, DIAMOND BAR, CA 91765-4369
Owner Type	Company
Vesting	Trust

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

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Jun 21, 2000 · Amount on File
Deed Sale	Jun 21, 2000 · Amount on File
Deed Document Number	2000951308
Last Transfer Date	Jan 8, 2019
Transfer Doc	0000117205
Record Updated	Oct 29, 2026

February 2019: Quit Claim Deed, Transfer

Document Type	Quit Claim Deed
Jurisdiction	LOS ANGELES CA
Recording Date	Feb 7, 2019
Property Address	1157 SENECA PL, DIAMOND BAR, CA 91765-4369
Document Number	0000117205
Instrument Date	Jan 8, 2019
Instrument	117205
Transaction Type	Transfer
Record Updated	Feb 18, 2019
Title Company	ATTORNEY ONLY

Transaction

Tax	$0.00
Additional	Quitclaim Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Personal Trust
Address	1157 SENECA PL DIAMOND BAR CA 917654369, DIAMOND BAR, CA 91765-4369

Tax Assessment & Valuation

The 2025 property tax bill for 1157 Seneca Pl was $9,364.

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		$677,231 (+2%) Land $218,210 Building $459,021
2025	$9,364.00	$663,953 Land $213,932 Building $450,021
2023	$8,610.00 (+2.28%)	$638,174 Land $205,626 Building $432,548
2022	$8,418.00

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

Flood

FEMA maps place 1157 Seneca Pl in Zone X, an area of minimal flood risk.

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 Policies	1 in force

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

Wildfire risk around 1157 Seneca Pl is moderate, ranking above 48% of the US, with a 0.1% annual chance of wildfire.

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

Wildfire Risk	Moderate above 48% of the US · lower than 71% of California
Wildfire Likelihood	0.1% annual chance
Exposure	Indirect within 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 529 locations within half a mile, as of December 31, 2025

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