409 W 4th St, San Dimas, CA 91773 Property Records

Los Angeles County property record for 409 W 4th St, San Dimas, CA 91773

Property Summary

Property Type	Duplex
Details	3 bd · 3 ba · 1,864 sqft · built 1989
Lot Size	0.162 acres (7,045 sqft)
Owner	Individual Name on File
Last Sale	$950,000 (Nov 2025)
Tax Bill	$11,618 (2025)
Deeds & Mortgages	Nov 2025 Transfer Nov 2025 Sale & Mortgage + 2 more
Flood Zone	Zone X (minimal risk)
APN	`8386-012-021`

Property Details

APN / Parcel Number

Primary APN	`8386-012-021`

Interior

Bedrooms	3 Beds
Full Baths	3 Baths
Total Rooms	5 Rooms
Units	2 Units
Stories	1 Story
Building Area	1,864 sqft Living Area

Exterior

Year Built	Built 1989
Effective Year Built	Effective 1989
Architectural Style	Conventional
Construction Type	Wood
Roof Type	Gable
Roof Material	Composition Shingle
Lot Area	7,045 sqft (0.162 acres)
Lot Dimensions	140 ft deep x 50 ft wide
Total Buildings	2 Buildings

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Central

Location & Zoning

Street Address	409 W 4TH ST
City	SAN DIMAS
State	CA
Zip	91773-2009
Property Category	Residential
Property Type	Residential > Multi-Unit > Duplex
Local Zoning Code	SDMFD*
Legal Description	TRACT # 383 LOT 22
Legal Subdivision	383
Legal Tract	383
Legal Block	2
Legal Lot Number	22
Jurisdiction	LOS ANGELES CA
Township / Civil Division	EAST SAN GABRIEL VALLEY
Census Block Group	2
Census Block	2008
Census Tract	401311

Owner

409 W 4th St, a duplex, is owned and occupied by an individual who bought it in November 2025.

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	Individual Name on File
Mailing Address	409 W 4TH ST, SAN DIMAS, CA 91773-2009
Occupancy	Owner Occupied
Owner Type	Individual
Vesting	Sole Owner

Deeds, Mortgages & Sale History

Date	Document
Nov 20, 2025	Intrafamily Transfer, Transfer STOCKDALE TITLE COMPANY, SOCAL TITLE COMPANY
Nov 20, 2025	Grant Deed, Transfer · Conventional Mortgage UNITED WHOLESALE MORTGAGE
Jan 29, 2024	Intrafamily Transfer, Transfer
Jan 19, 2021	Quit Claim Deed, Transfer NOT AVAILABLE

Assessor's Deed Record

Deed Names	Name on Deed
Last Sale	Nov 20, 2025 · Amount on File
Deed Sale	Nov 20, 2025 · Amount on File
Prior Sale	Jun 25, 2021 · Amount on File
Deed Document Number	2025827861
Prior Transfer Date	Jan 25, 2024
Prior Transfer Doc	0000062927
Record Updated	Oct 29, 2026

November 2025: Intrafamily Transfer, Transfer

Document Type	Intrafamily Transfer
Jurisdiction	LOS ANGELES CA
Recording Date	Nov 20, 2025
Property Address	409 W 4TH ST, SAN DIMAS, CA 91773-2009
Document Number	0000827862
Map Reference	MB 15 PG 125
Instrument Date	Nov 4, 2025
Instrument	25-0827862
Transaction Type	Transfer
Record Updated	Dec 3, 2025
Title Company	STOCKDALE TITLE COMPANY, SOCAL TITLE COMPANY

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	409 W 4TH ST, SAN DIMAS, CA 91773-2009

November 2025: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	LOS ANGELES CA
Recording Date	Nov 20, 2025
Property Address	409 W 4TH ST, SAN DIMAS, CA 91773-2009
Document Number	0000827861
Map Reference	MB 15 PG 125
Instrument Date	Oct 24, 2025
Instrument	25-0827861
Transaction Type	Transfer
Record Updated	Dec 3, 2025
Title Company	STOCKDALE TITLE COMPANY, SOCAL TITLE COMPANY

Transaction

Amount	Amount on Record
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$0.00
Amount Accuracy	Rounded by County
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	2256 E ROUTE 66, GLENDORA, CA 91740-4673

Mortgage

Document Number	0000827863
Date	Nov 20, 2025
Instrument	25-0827863

Lender

Name	UNITED WHOLESALE MORTGAGE
Type	Mortgage Company

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	181 Months
Due	Dec 1, 2040

January 2024: Intrafamily Transfer, Transfer

Document Type	Intrafamily Transfer
Jurisdiction	LOS ANGELES CA
Recording Date	Jan 29, 2024
Property Address	409 W 4TH ST, SAN DIMAS, CA 91773-2009
Document Number	0000062927
Map Reference	MB 15 PG 125
Instrument Date	Jan 25, 2024
Instrument	24-0062927
Transaction Type	Transfer
Record Updated	Feb 7, 2024

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	23221 LOCKNESS AVE, HARBOR CITY, CA 90710-1128

January 2021: Quit Claim Deed, Transfer

Document Type	Quit Claim Deed
Jurisdiction	LOS ANGELES CA
Recording Date	Jan 19, 2021
Property Address	409 W 4TH ST, SAN DIMAS, CA 91773-2009
Document Number	0000093160
Instrument Date	Dec 23, 2020
Instrument	93160
Transaction Type	Transfer
Record Updated	Jan 25, 2021
Title Company	NOT AVAILABLE

Transaction

Tax	$0.00
Additional	Quitclaim Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Living Trust
Address	45060 MONTY CT LAKE ELSINORE CA 92530, LAKE ELSINORE, CA 92530

Tax Assessment & Valuation

The 2025 property tax bill for 409 W 4th St was $11,618, up 5.1% from the year before.

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		$950,000 (+2.05%) Land $615,000 Building $335,000
2025	$11,618.00 (+5.05%)	$930,890 Land $649,458 Building $281,432
2024	$11,059.00 (+2.29%)
2023	$10,811.00 (+1.65%)	$894,744 Land $624,240 Building $270,504
2022	$10,636.00

Assessed value is set for property tax purposes and is not a market price estimate.

Flood

FEMA maps place 409 W 4th St in Zone X, an area of minimal flood risk.

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

The area around 409 W 4th St has no burnable land within ember reach, so its wildfire risk is not rated.

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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