Los Angeles County property record for 11523 Thienes Ave, El Monte, CA 91733
| Property Type | Triplex |
|---|---|
| Details | 5 bd · 3 ba · 2,134 sqft · built 1953 |
| Lot Size | 0.319 acres (13,915 sqft) |
| Owner | 2 Trust Names on File |
| Last Sale | $535,000 (Dec 2013) |
| Tax Bill | $9,620 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 8113-020-013 |
| Primary APN | 8113-020-013 |
|---|
| Bedrooms | 5 Beds |
|---|---|
| Full Baths | 3 Baths |
| Units | 3 Units |
| Building Area | 2,134 sqft Living Area |
| Year Built | Built 1953 |
|---|---|
| Effective Year Built | Effective 1953 |
| Architectural Style | Triplex |
| Construction Type | Wood |
| Lot Area | 13,915 sqft (0.319 acres) |
| Lot Dimensions | 185 ft deep x 76 ft wide |
| Total Buildings | 3 Buildings |
| Heating System | Floor/Wall Furnace |
|---|
| Street Address | 11523 THIENES AVE |
|---|---|
| City | SOUTH EL MONTE |
| State | CA |
| Zip | 91733-4135 |
| Property Category | Residential |
| Property Type | Residential > Multi-Unit > Triplex |
| Local Zoning Code | LCA1ED1* |
| Legal Description | TRACT # 11172 LOT 26 |
| Legal Subdivision | 11172 |
| Legal Tract | 11172 |
| Legal Block | 1 |
| Legal Lot Number | 26 |
| Jurisdiction | LOS ANGELES CA |
| Township / Civil Division | UPPER SAN GABRIEL VALLEY |
| Census Block Group | 1 |
| Census Block | 1005 |
| Census Tract | 434004 |
11523 Thienes Ave, a triplex, is held in a trust since December 2013.
Source: Los Angeles County records, as of August 25, 2026
| Owner of Record | 2 Trust Names on File |
|---|---|
| Mailing Address | 1645 ALAMITAS AVE, MONROVIA, CA 91016-4478 |
| Owner Type | Company |
| Vesting | Trust, Family Trust |
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 Sale | Dec 20, 2013 · Amount on File |
| Deed Sale | Dec 20, 2013 · Amount on File |
| Prior Sale | Jan 16, 2013 · Amount on File |
| Deed Document Number | 20131791569 |
| Record Updated | Oct 29, 2026 |
The 2025 property tax bill for 11523 Thienes Ave was $9,620.
Source: Los Angeles County assessment roll, as of August 25, 2026
| Type | Name |
|---|---|
| State | California |
| County | Los Angeles County |
| Secondary School District | El Monte Union High School District (09 - 12) |
| Elementary School District | Mountain View Elementary School District (KG - 08) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $668,939 (+2%) Land $275,077 Building $393,862 | |
| 2025 | $9,620.00 | $655,824 Land $269,684 Building $386,140 |
| 2023 | $8,613.00 (+2.52%) | $630,360 Land $259,213 Building $371,147 |
| 2022 | $8,401.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 11523 Thienes 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.
Wildfire risk around 11523 Thienes Ave is low, with less than a 0.01% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 97% of the US · lower than 97.8% of California |
|---|---|
| Wildfire Likelihood | Under 0.01% annual chance |
| Exposure | Direct burnable vegetation |
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 | SAN GABRIEL VALLEY WATER CO.-EL MONTE private · serves 240,000 people · EPA ID CA1910039 |
|---|---|
| Water Source | Groundwater |
| Last State Inspection | Aug 2024 |
| Lead | Under 1 ppb (2024–2026) action level 15 ppb |
| Water Quality | Treatment failure resolved · Jun 2019 |
|---|---|
| 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. This system sells water to local utilities; the supplier billing this address may be one of them.
Source: FCC Broadband Data Collection, based on 258 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| AT&T Fiber | 5,000 / 5,000 |
| Spectrum Cable · Fiber in parts of the area | 1,000 / 1,000 |
| Verizon Fixed Wireless | 300 / 20 |
| T-Mobile Fixed Wireless | 100 / 20 |
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