Los Angeles County property record for 521 Duff Ave, La Puente, CA 91744
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 2 ba · 1,140 sqft · built 1955 |
| Lot Size | 0.139 acres (6,049 sqft) |
| Owner | 2 Company Names on File |
| Tax Bill | $1,198 (2025) |
| Deeds & Mortgages | Dec 2020 Transfer |
| Flood Zone | Zone X (minimal risk) |
| APN | 8210-018-025 |
| Primary APN | 8210-018-025 |
|---|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 8 Rooms |
| Stories | 1 Story |
| Building Area | 1,140 sqft Living Area |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1955 |
|---|---|
| Effective Year Built | Effective 1955 |
| Architectural Style | Conventional |
| Exterior Material | Stucco |
| Construction Type | Wood |
| Roof Type | Gable |
| Roof Material | Gravel |
| Lot Area | 6,049 sqft (0.139 acres) |
| Lot Dimensions | 97 ft deep x 62 ft wide |
| Heating System | Floor/Wall Furnace |
|---|
| Street Address | 521 DUFF AVE |
|---|---|
| City | LA PUENTE |
| State | CA |
| Zip | 91744-3727 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | LPR1YY |
| Legal Description | TRACT # 20629 LOT 59 |
| Legal Subdivision | 20629 |
| Legal Tract | 20629 |
| Legal Block | 1 |
| Legal Lot Number | 59 |
| Jurisdiction | LOS ANGELES CA |
| Township / Civil Division | EAST SAN GABRIEL VALLEY |
| Census Block Group | 1 |
| Census Block | 1004 |
| Census Tract | 407201 |
521 Duff Ave is owned by a company that acquired it in September 2020 and is owner-occupied.
Source: Los Angeles County records, as of August 25, 2026
| Owner of Record | 2 Company Names on File |
|---|---|
| Mailing Address | 521 DUFF AVE, LA PUENTE, CA 91744-3727 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | Borrower in Default |
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Deed Names | 2 Names on Deed |
|---|---|
| Last Transfer Date | Sep 20, 2020 |
| Transfer Doc | 0001691391 |
| Record Updated | Oct 29, 2026 |
| Document Type | Quit Claim Deed |
|---|---|
| Jurisdiction | LOS ANGELES CA |
| Recording Date | Dec 21, 2020 |
| Property Address | 521 DUFF AVE, LA PUENTE, CA 91744-3727 |
| Document Number | 0001691391 |
| Instrument Date | Sep 20, 2020 |
| Instrument | 1691391 |
| Transaction Type | Transfer |
| Record Updated | Jan 25, 2021 |
| Title Company | NOT AVAILABLE |
| Tax | $0.00 |
|---|---|
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Revocable Trust |
| Address | 521 DUFF AVE LA PUENTE CA 917443727, LA PUENTE, CA 91744-3727 |
The 2025 property tax bill for 521 Duff Ave was $1,198 with a homeowner's exemption, up 9.7% from the year before.
Source: Los Angeles County assessment roll, as of August 25, 2026
| Type | Name |
|---|---|
| State | California |
| County | Los Angeles County |
| Municipality | La Puente City |
| Unified School District | Hacienda La Puente Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $54,439 (+1.99%) Land $21,214 Building $33,225 | |
| 2025 | $1,198.00 (+9.71%) Homeowner's exemption | $53,378 Land $20,804 Building $32,574 |
| 2024 | $1,092.00 (+2.25%) | |
| 2023 | $1,068.00 (+2.4%) Homeowner's exemption | $51,308 Land $19,998 Building $31,310 |
| 2022 | $1,043.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 521 Duff Ave 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.
The area around 521 Duff Ave 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.
Source: EPA Safe Drinking Water Information System, as of September 2026
| Water System | SUBURBAN WATER SYSTEMS-SAN JOSE private · serves 170,523 people · EPA ID CA1910205 |
|---|---|
| Water Source | Purchased surface water from several systems |
| Last State Inspection | Aug 2024 |
| Lead | Under 1 ppb (2023–2025) action level 15 ppb |
| 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.
Source: FCC Broadband Data Collection, based on 726 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 / 35 |
| T-Mobile Fixed Wireless | 100 / 20 |
May also be available: AT&T, GeoLinks, Verizon.
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