421 W 3rd St, San Dimas, CA 91773 Property Records

Los Angeles County property record for 421 W 3rd St, San Dimas, CA 91773

Property Summary

Property Type	Duplex
Details	4 bd · 2 ba · 2,408 sqft · built 1953
Lot Size	0.159 acres (6,927 sqft)
Owner	2 Company Names on Record
Tax Bill	$4,436 (2025)
Flood Zone	Zone X (minimal risk)
APN	`8386-013-064`

Property Details

APN / Parcel Number

Primary APN	`8386-013-064`

Interior

Bedrooms	4 Beds
Full Baths	2 Baths
Units	2 Units
Building Area	2,408 sqft Living Area

Exterior

Year Built	Built 1953
Effective Year Built	Effective 1957
Architectural Style	Duplex Single
Construction Type	Wood
Lot Area	6,927 sqft (0.159 acres)
Lot Dimensions	140 ft deep x 50 ft wide

Utilities, Heating & Cooling

Cooling System	HVAC

Location & Zoning

Street Address	421 W 3RD ST
City	SAN DIMAS
State	CA
Zip	91773-2035
Property Category	Residential
Property Type	Residential > Multi-Unit > Duplex
Local Zoning Code	SDMFD*
Legal Description	TR=383 LOT 43
Legal Subdivision	383
Legal Tract	383
Legal Block	2
Legal Lot Number	43
Jurisdiction	LOS ANGELES CA
Township / Civil Division	EAST SAN GABRIEL VALLEY
Census Block Group	2
Census Block	2018
Census Tract	401311

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	PO BOX 4034, COVINA, CA 91723-0434
Owner Type	Company
Vesting	Trust, Living Trust

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Jun 14, 2001
Deed Sale	Jun 14, 2001
Deed Document Number	20011024305
Prior Transfer Date	Oct 15, 1997
Prior Transfer Doc	0001861700
Record Updated	Oct 29, 2026

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	San Dimas City
Unified School District	Bonita Unified School District (KG - 12)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value
2026		$292,000 (+2%) Land $153,686 Building $138,314
2025	$4,436.00 (+8.06%)	$286,275 (+4.04%) Land $150,673 Building $135,602
2024	$4,105.00 (+2.14%)
2023	$4,019.00 (+1.72%)	$275,161 Land $144,823 Building $130,338
2022	$3,951.00

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	Not rated no burnable land 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	GSWC-SAN DIMAS private · serves 56,564 people · EPA ID CA1910142
Water Source	Purchased surface water from several systems
Last State Inspection	May 2025
Also Mapped Here	METROPOLITAN WATER DIST. OF SO. CAL.
Lead	2 ppb (2024–2026) 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 517 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

May also be available: GeoLinks.

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