421 S Madison Ave, Monrovia, CA 91016 Property Records

Los Angeles County property record for 421 S Madison Ave, Monrovia, CA 91016

Property Summary

Property Type	Duplex
Details	5 bd · 3 ba · 1,956 sqft · built 1953
Lot Size	0.18 acres (7,857 sqft)
Owner	2 Company Names on Record
Last Sale	$185,000 (Sep 1998)
Tax Bill	$4,600 (2025)
Deeds & Mortgages	Jun 2021 Transfer
Flood Zone	Zone X (minimal risk)
APN	`8505-031-015`

Property Details

APN / Parcel Number

Primary APN	`8505-031-015`

Interior

Bedrooms	5 Beds
Full Baths	3 Baths
Units	2 Units
Building Area	1,956 sqft Living Area

Exterior

Year Built	Built 1953
Effective Year Built	Effective 1953
Architectural Style	Duplex Single
Construction Type	Wood
Lot Area	7,857 sqft (0.18 acres)
Total Buildings	2 Buildings

Utilities, Heating & Cooling

Cooling System	HVAC
Heating System	Floor/Wall Furnace

Location & Zoning

Street Address	421 S MADISON AVE
City	MONROVIA
State	CA
Zip	91016-2532
Property Category	Residential
Property Type	Residential > Multi-Unit > Duplex
Local Zoning Code	MORH*
Legal Description	TRACT # 8715 LOT 36
Legal Subdivision	8715
Legal Tract	8715
Legal Block	2
Legal Lot Number	36
Jurisdiction	LOS ANGELES CA
Township / Civil Division	UPPER SAN GABRIEL VALLEY
Census Block Group	2
Census Block	2004
Census Tract	431003

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	423 S MADISON AVE, MONROVIA, CA 91016-2532
Owner Type	Company
Vesting	Trust

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Sep 22, 1998 · Amount on Record
Deed Sale	Sep 22, 1998 · Amount on Record
Deed Document Number	19981710446
Last Transfer Date	May 27, 2021
Transfer Doc	0000986148
Record Updated	Oct 29, 2026

June 2021: Intrafamily Transfer, Transfer

Document Type	Intrafamily Transfer
Jurisdiction	LOS ANGELES CA
Recording Date	Jun 23, 2021
Property Address	421 S MADISON AVE, MONROVIA, CA 91016-2532
Document Number	0000986148
Map Reference	MB 105 PG 24&25
Instrument Date	May 27, 2021
Instrument	21-0986148
Transaction Type	Transfer
Record Updated	Jul 14, 2021

Transaction

Tax	$0.00
Amount Accuracy	Transfer Tax Exempt
Additional	Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Living Trust
Address	423 S MADISON AVE, MONROVIA, CA 91016-2532

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	Monrovia City
Unified School District	Monrovia Unified School District (KG - 12)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value
2026		$295,801 (+2%) Land $191,877 Building $103,924
2025	$4,600.00 (+2.66%)	$290,002 (+4.04%) Land $188,115 Building $101,887
2024	$4,481.00 (+2.17%)
2023	$4,386.00 (+2.74%)	$278,743 Land $180,811 Building $97,932
2022	$4,269.00

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	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	MONROVIA-CITY, WATER DEPT. serves 37,931 people · EPA ID CA1910090
Water Source	Groundwater
Last State Inspection	Sep 2024
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 745 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
Frontier Fiber	5,000 / 5,000
Spectrum Cable · Fiber in parts of the area	1,000 / 1,000
Giggle Fiber Cable	1,000 / 40
T-Mobile Fixed Wireless	100 / 20

May also be available: AT&T, GeoLinks, Verizon.

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