3121 Mayfair Ave, El Monte (South El Monte), CA 91733 Property Records

Los Angeles County property record for 3121 Mayfair Ave, El Monte, CA 91733

Property Summary

Property Type	Duplex
Details	3 bd · 2 ba · 1,675 sqft · built 1954
Lot Size	0.121 acres (5,281 sqft)
Owner	2 Company Names on Record
Last Sale	$169,000 (May 1999)
Tax Bill	$4,298 (2025)
Deeds & Mortgages	Mar 2018 Mortgage Aug 2022 Transfer + 1 more
Flood Zone	Zone X (minimal risk)
APN	`8580-011-006`

Property Details

APN / Parcel Number

Primary APN	`8580-011-006`

Interior

Bedrooms	3 Beds
Full Baths	2 Baths
Units	2 Units
Building Area	1,675 sqft Living Area

Exterior

Year Built	Built 1954
Effective Year Built	Effective 1954
Architectural Style	Duplex Single
Construction Type	Wood
Lot Area	5,281 sqft (0.121 acres)
Total Buildings	2 Buildings

Utilities, Heating & Cooling

Heating System	Floor/Wall Furnace

Location & Zoning

Street Address	3121 MAYFAIR AVE
City	EL MONTE
State	CA
Zip	91733-1323
Property Category	Residential
Property Type	Residential > Multi-Unit > Duplex
Local Zoning Code	EMR3YY
Legal Description	0.12 AC COM S 89 5935 E 188.91 FT AND S 0 2215 W 241.14 FT FROM NW COR OF PA RCEL 1 L S 29-38 TH S 0 2215 W 61 FT W ITH A UNIFORM DEPTH OF 85.61 FT S 85 5950 W PART OF SEC 21 T 1S R 11W
Legal Range	11W
Legal Township	01S
Legal Section	21
Legal Block	4
Legal Lot Number	21
Jurisdiction	LOS ANGELES CA
Township / Civil Division	UPPER SAN GABRIEL VALLEY
Census Block Group	4
Census Block	4020
Census Tract	433200

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	3121 MAYFAIR AVE, EL MONTE, CA 91733-1323
Occupancy	Owner Occupied
Owner Type	Company
Vesting	Trust

Deeds, Mortgages & Sale History

Date	Document
Mar 30, 2018	Deed of Trust, Mortgage · Conventional Mortgage BANK AMERICA FSB
Aug 12, 2022	Intrafamily Transfer, Transfer
May 27, 2021	Intrafamily Transfer, Transfer · Conventional Mortgage BANK OF AMERICA NA

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	May 5, 1999 · Amount on Record
Deed Sale	May 5, 1999 · Amount on Record
Deed Document Number	1999805546
Prior Transfer Date	Apr 5, 1999
Prior Transfer Doc	0000805545
Record Updated	Oct 29, 2026

March 2018: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	LOS ANGELES CA
Property Address	3121 MAYFAIR AVE, EL MONTE, CA 91733-1323
Transaction Type	Mortgage
Record Updated	Aug 30, 2022

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0000310121
Date	Mar 30, 2018
Instrument	18-0310121

Lender

Name	BANK AMERICA FSB
Type	Bank
Address	CHARLOTTE, NC 28255

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	241 Months
Due	Apr 1, 2038

August 2022: Intrafamily Transfer, Transfer

Document Type	Intrafamily Transfer
Jurisdiction	LOS ANGELES CA
Recording Date	Aug 12, 2022
Property Address	3121 MAYFAIR AVE, EL MONTE, CA 91733-1323
Document Number	0000813684
Instrument Date	Jul 21, 2022
Instrument	22-0813684
Transaction Type	Transfer
Record Updated	Jun 7, 2023

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	3119 MAYFAIR AVE # 3121, 3121, EL MONTE, CA 91733-1323

May 2021: Intrafamily Transfer, Transfer

Document Type	Intrafamily Transfer
Jurisdiction	LOS ANGELES CA
Recording Date	May 27, 2021
Property Address	3121 MAYFAIR AVE, EL MONTE, CA 91733-1323
Document Number	0000855352
Instrument Date	May 20, 2021
Instrument	21-0855352
Transaction Type	Transfer
Record Updated	Aug 30, 2022
Title Company	STEWART TITLE

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
Address	3121 MAYFAIR AVE, EL MONTE, CA 91733-1323

Mortgage

Document Number	0000855353
Date	May 27, 2021
Instrument	21-0855353

Lender

Name	BANK OF AMERICA NA
Type	Bank

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	361 Months
Due	Jun 1, 2051

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	El Monte City
Elementary School District	El Monte City School District (KG - 08)
Secondary School District	El Monte Union High School District (09 - 12)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value
2026		$270,217 (+2%) Land $116,879 Building $153,338
2025	$4,298.00 (+12.34%) Homeowner's exemption	$264,920 (+3.93%) Land $114,588 Building $150,332
2023	$3,826.00 (+3.71%) Homeowner's exemption	$254,896 Land $110,140 Building $144,756
2022	$3,689.00

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	EL MONTE-CITY, WATER DEPT. serves 23,000 people · EPA ID CA1910038
Water Source	Groundwater
Last State Inspection	Nov 2025
Lead	Under 1 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 617 locations within half a mile, as of December 31, 2025

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

May also be available: AT&T, GeoLinks.

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