1100 Seneca Pl, Diamond Bar, CA 91765 Property Records

Los Angeles County property record for 1100 Seneca Pl, Diamond Bar, CA 91765

Property Summary

Property Type	Single Family Home
Details	4 bd · 3 ba · 3,203 sqft · built 1986
Lot Size	0.444 acres (19,333 sqft)
Owner	2 Company Names on File
Last Sale	$1,499,000 (Sep 2024)
Tax Bill	$19,418 (2025)
Deeds & Mortgages	Jan 2022 Sale
Flood Zone	Zone X (minimal risk)
APN	`8701-042-006`

Property Details

APN / Parcel Number

Primary APN	`8701-042-006`

Interior

Bedrooms	4 Beds
Full Baths	3 Baths
Building Area	3,203 sqft Living Area

Exterior

Year Built	Built 1986
Effective Year Built	Effective 1986
Construction Type	Wood
Lot Area	19,333 sqft (0.444 acres)
Lot Dimensions	173 ft deep x 112 ft wide
Garage Type	Attached

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Central

Location & Zoning

Street Address	1100 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 58
Legal Subdivision	42570
Legal Tract	42570
Legal Block	2
Legal Lot Number	58
Jurisdiction	LOS ANGELES CA
Township / Civil Division	EAST SAN GABRIEL VALLEY
Census Block Group	2
Census Block	2010
Census Tract	403320

Owner

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

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

Owner of Record	2 Company Names on File
Mailing Address	1100 SENECA PL, DIAMOND BAR, CA 91765-4369
Occupancy	Owner Occupied
Owner Type	Company
Vesting	Trust, Family Trust

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Sep 18, 2024 · Amount on File
Deed Sale	Sep 18, 2024 · Amount on File
Prior Sale	Nov 29, 1999 · Amount on File
Deed Document Number	2024635049
Last Transfer Date	Oct 7, 2024
Transfer Doc	0000760887
Record Updated	Oct 29, 2026

January 2022: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	LOS ANGELES CA
Recording Date	Jan 3, 2022
Property Address	1100 SENECA PL, DIAMOND BAR, CA 91765-4369
Document Number	0000005953
Map Reference	MB 1063 PG 61-71
Instrument Date	Oct 15, 2021
Instrument	22-0005953
Transaction Type	Transfer
Record Updated	Jan 27, 2022

Transaction

Tax	$0.00
Amount Accuracy	Transfer Tax Exempt
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Joint Tenants
Address	1100 SENECA PL, DIAMOND BAR, CA 91765-4369

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		$1,528,980 (+2%) Land $1,071,204 Building $457,776
2025	$19,418.00 (+117.79%)	$1,499,000 (+128.77%) Land $1,050,200 Building $448,800
2023	$8,916.00 (+2.84%) Homeowner's exemption	$655,247 Land $269,006 Building $386,241
2022	$8,670.00

Assessed value and assessed market value are set for property tax purposes, not market price estimates; both are a fraction of this property's market value.

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 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

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

Wildfire Risk	Moderate above 46% of the US · lower than 72% of California
Wildfire Likelihood	0.09% 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