509 Winthrop Dr, Alhambra, CA 91803 Property Records

Los Angeles County property record for 509 Winthrop Dr, Alhambra, CA 91803

Property Summary

Property Type	Single Family Home
Details	3 bd · 1 ba · 1,275 sqft · built 1930
Lot Size	0.141 acres (6,136 sqft)
Owner	2 Company Names on Record
Tax Bill	$1,271 (2025)
Deeds & Mortgages	Apr 2026 Mortgage Nov 2025 Line of Credit + 2 more
Flood Zone	Zone X (minimal risk)
APN	`5291-003-025`

Property Details

APN / Parcel Number

Primary APN	`5291-003-025`

Interior

Bedrooms	3 Beds
Full Baths	1 Bath
Total Rooms	8 Rooms
Stories	1 Story
Building Area	1,275 sqft Living Area
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1930
Effective Year Built	Effective 1930
Architectural Style	Spanish
Exterior Material	Stucco
Construction Type	Wood
Roof Type	Gable
Roof Material	Tile
Lot Area	6,136 sqft (0.141 acres)
Lot Dimensions	131 ft deep x 45 ft wide
Garage Type	Attached

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Floor/Wall Furnace
Water Source	Commercial

Location & Zoning

Street Address	509 WINTHROP DR
City	ALHAMBRA
State	CA
Zip	91803-1050
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	ALR1*
Legal Description	TRACT # 4948 LOT 25 BLK 15
Legal Subdivision	4948
Legal Tract	4948
Legal Block	15
Legal Lot Number	25
Jurisdiction	LOS ANGELES CA
Township / Civil Division	SOUTHWEST SAN GABRIEL VALLEY
Census Block Group	3
Census Block	3006
Census Tract	480803

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	509 WINTHROP DR, ALHAMBRA, CA 91803-1050
Occupancy	Owner Occupied
Owner Type	Company
Vesting	Trust, Family Trust

Deeds, Mortgages & Sale History

Date	Document
Apr 8, 2026	Deed of Trust, Mortgage · Conventional Mortgage ROCKET MORTGAGE LLC
Nov 24, 2025	Deed of Trust, Mortgage · Line of Credit GOODLEAP LC
Mar 30, 2021	Intrafamily Transfer, Transfer · Conventional Mortgage QUICKEN LOANS LLC
Mar 30, 2021	Intrafamily Transfer, Transfer AMROCK LLC

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Transfer Date	Mar 20, 2021
Transfer Doc	0000499456
Record Updated	Oct 29, 2026

April 2026: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	LOS ANGELES CA
Recording Date	Apr 8, 2026
Property Address	509 WINTHROP DR, ALHAMBRA, CA 91803-1050
Document Number	0000247807
Instrument Date	Apr 2, 2026
Instrument	2026247807
Transaction Type	Mortgage
Record Updated	Jul 12, 2026
Title Company	NONE LISTED ON DOCUMENT

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Family Trust, 221
Address	509 WINTHROP DR, ALHAMBRA, CA 91803-1050
Investor	Possibly a Property Investor

Mortgage

Document Number	0000247807,
Date	Apr 8, 2026
Instrument	2026247807

Lender

Name	ROCKET MORTGAGE LLC

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	240 Months
Due	May 1, 2046

Interest

Rate Type	Fixed Rate
Rate	6%
Initial Type	Fixed Rate
Max Rate	-1%

November 2025: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	LOS ANGELES CA
Property Address	509 WINTHROP DR, ALHAMBRA, CA 91803-1050
Transaction Type	Mortgage
Record Updated	Dec 8, 2025

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	509 WINTHROP DR, ALHAMBRA, CA 91803-1050

Mortgage

Document Number	0000839885
Date	Nov 24, 2025
Instrument	25-0839885

Lender

Name	GOODLEAP LC
Type	Mortgage Company
Address	ROSEVILLE, CA 95661

Agreement

Type	Line of Credit
Amount	Amount Recorded
Term	240 Months
Due	Nov 23, 2045

Interest

Rate Type	Adjustable Rate
Change Frequency	Monthly

March 2021: Intrafamily Transfer, Transfer

Document Type	Intrafamily Transfer
Jurisdiction	LOS ANGELES CA
Recording Date	Mar 30, 2021
Property Address	509 WINTHROP DR, ALHAMBRA, CA 91803-1050
Document Number	0000499454
Map Reference	MB 63 PG 23&24
Instrument Date	Mar 20, 2021
Instrument	21-0499454
Transaction Type	Transfer
Record Updated	Sep 22, 2021
Title Company	AMROCK INC, AMROCK LLC

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	509 WINTHROP DR, ALHAMBRA, CA 91803-1050

Mortgage

Document Number	0000499455
Date	Mar 30, 2021
Instrument	21-0499455

Lender

Name	QUICKEN LOANS LLC
Type	Mortgage Company

Agreement

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

March 2021: Intrafamily Transfer, Transfer

Document Type	Intrafamily Transfer
Jurisdiction	LOS ANGELES CA
Recording Date	Mar 30, 2021
Property Address	509 WINTHROP DR, ALHAMBRA, CA 91803-1050
Document Number	0000499456
Map Reference	MB 63 PG 23&24
Instrument Date	Mar 20, 2021
Instrument	21-0499456
Transaction Type	Transfer
Record Updated	Jun 7, 2023
Title Company	AMROCK LLC

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	Family Trust
Address	509 WINTHROP DR, ALHAMBRA, CA 91803-1050

Tax Assessment & Valuation

Source: Los Angeles County assessment roll, as of August 25, 2026

Property Jurisdictions

Type	Name
State	California
Municipality	Alhambra City
County	Los Angeles County
Unified School District	Alhambra Unified School District (KG - 12)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value
2026		$73,448 (+2%) Land $36,976 Building $36,472
2025	$1,271.00 (+1.76%) Homeowner's exemption	$72,010 (+4.04%) Land $36,252 Building $35,758
2023	$1,249.00 (+3.48%) Homeowner's exemption	$69,216 Land $34,846 Building $34,370
2022	$1,207.00

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	CITY OF ALHAMBRA serves 80,279 people · EPA ID CA1910001
Water Source	Purchased surface water from several systems
Last State Inspection	Apr 2023
Lead	Under 1 ppb (2025–2027) 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 954 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
AT&T Fiber · DSL in parts of the area	5,000 / 5,000
Spectrum Cable · Fiber in parts of the area	1,000 / 1,000
Starlink Satellite	280 / 30
T-Mobile Fixed Wireless	100 / 20

May also be available: GeoLinks, Verizon.

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