Los Angeles County property record for 312 N Mountain Ave, Monrovia, CA 91016
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 2 ba · 1,752 sqft · built 1956 |
| Lot Size | 0.414 acres (18,050 sqft) |
| Owner | 2 Company Names on File |
| Last Sale | $359,500 (May 2001) |
| Tax Bill | $7,469 (2025) |
| Deeds & Mortgages | Jan 2021 Transfer |
| Flood Zone | Zone X (minimal risk) |
| APN | 8523-017-035 |
| Primary APN | 8523-017-035 |
|---|---|
| Alternative APN |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2 Baths |
| Stories | 1 Story |
| Building Area | 1,752 sqft Living Area |
| Year Built | Built 1956 |
|---|---|
| Effective Year Built | Effective 1956 |
| Construction Type | Wood |
| Lot Area | 18,050 sqft (0.414 acres) |
| Heating System | Central |
|---|
| Street Address | 312 N MOUNTAIN AVE |
|---|---|
| City | MONROVIA |
| State | CA |
| Zip | 91016-2439 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | MOP/QP* |
| Legal Description | M R 6-80-82 FOR DESC SEE ASSESSORS MAPS POR OF LOT 2 IN SEC 24 T1N R11W |
| Legal Range | 11W |
| Legal Township | 01N |
| Legal Section | 24 |
| Legal Subdivision | AZUSA DE DUARTE RHO |
| Legal Block | 4 |
| Legal Lot Number | 2 |
| Jurisdiction | LOS ANGELES CA |
| Township / Civil Division | UPPER SAN GABRIEL VALLEY |
| Census Block Group | 4 |
| Census Block | 4006 |
| Census Tract | 430301 |
312 N Mountain Ave is owned by a company that acquired it in June 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 | 312 N MOUNTAIN AVE, MONROVIA, CA 91016-2439 |
| 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 Sale | May 3, 2001 · Amount on File |
| Deed Sale | May 3, 2001 · Amount on File |
| Prior Sale | Dec 20, 1996 · Amount on File |
| Deed Document Number | 2001762204 |
| Last Transfer Date | Jun 15, 2020 |
| Transfer Doc | 0000043460 |
| Record Updated | Oct 29, 2026 |
| Document Type | Quit Claim Deed |
|---|---|
| Jurisdiction | LOS ANGELES CA |
| Recording Date | Jan 11, 2021 |
| Property Address | 312 N MOUNTAIN AVE, MONROVIA, CA 91016-2439 |
| Document Number | 0000043460 |
| Instrument Date | Jun 15, 2020 |
| Instrument | 43460 |
| Transaction Type | Transfer |
| Record Updated | Feb 10, 2021 |
| Title Company | ATTORNEY ONLY |
| Tax | $0.00 |
|---|---|
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Personal Trust |
| Address | 312 N MOUNTAIN AVE MONROVIA CA 910162439, MONROVIA, CA 91016-2439 |
The 2025 property tax bill for 312 N Mountain Ave was $7,469 with a homeowner's exemption, up 2.2% from the year before.
Source: Los Angeles County assessment roll, as of August 25, 2026
| Type | Name |
|---|---|
| State | California |
| County | Los Angeles County |
| Municipality | Monrovia City |
| Unified School District | Monrovia Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $558,922 (+2%) Land $448,427 Building $110,495 | |
| 2025 | $7,469.00 (+2.18%) Homeowner's exemption | $547,964 Land $439,635 Building $108,329 |
| 2024 | $7,310.00 (+2.32%) | |
| 2023 | $7,144.00 (+2.97%) Homeowner's exemption | $526,687 Land $422,564 Building $104,123 |
| 2022 | $6,938.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 312 N Mountain Ave in Zone X, an area of minimal flood risk, though there have been 6 flood claims nearby since 1978.
Source: FEMA National Flood Hazard Layer, effective September 30, 2026 · OpenFEMA NFIP redacted claims and policies, as of September 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
| Nearby Flood Policies | 5 in force |
| Nearby Flood Claims | 6 (1978–1998) |
| Most Recent Claim | Feb 1998 · Severe Winter Storms And Flooding |
Values are read at the parcel center point; flood claims are located to the census block group, not this parcel; lenders make the official flood determination.
Wildfire risk around 312 N Mountain Ave is moderate, ranking above 58% of the US, with a 0.1% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Moderate above 58% of the US · lower than 65% of California |
|---|---|
| Wildfire Likelihood | 0.1% annual chance |
| Exposure | Indirect within ember reach |
| Adjoins Burnable Land | Yes |
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 | MONROVIA-CITY, WATER DEPT. serves 37,931 people · EPA ID CA1910090 |
|---|---|
| Water Source | Groundwater |
| Last State Inspection | Sep 2024 |
| Lead | Under 1 ppb (2022–2024) 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 774 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Frontier Fiber | 5,000 / 5,000 |
| Spectrum Cable · Fiber in parts of the area | 1,000 / 1,000 |
| Giggle Fiber Cable | 1,000 / 40 |
| Verizon Fixed Wireless | 300 / 20 |
May also be available: GeoLinks, T-Mobile.
Search by:
By searching, you agree to: Terms • Privacy • Disclosures