Los Angeles County property record for 4638 Blackrock Ave, La Verne, CA 91750
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 2 ba · 1,530 sqft · built 1977 |
| Lot Size | 0.178 acres (7,761 sqft) |
| Owner | 2 Trust Names on File |
| Last Sale | $455,000 (Dec 2013) |
| Tax Bill | $1,378 (2025) |
| Deeds & Mortgages | Oct 2017 Transfer |
| Flood Zone | Zone X (minimal risk) |
| APN | 8665-033-042 |
| Primary APN | 8665-033-042 |
|---|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 9 Rooms |
| Stories | 2 Stories |
| Building Area | 1,530 sqft Living Area |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1977 |
|---|---|
| Effective Year Built | Effective 1977 |
| Architectural Style | Conventional |
| Exterior Material | Stucco |
| Construction Type | Wood |
| Roof Type | Gable |
| Roof Material | Wood Shingle |
| Lot Area | 7,761 sqft (0.178 acres) |
| Lot Dimensions | 103 ft deep x 73 ft wide |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Street Address | 4638 BLACKROCK AVE |
|---|---|
| City | LA VERNE |
| State | CA |
| Zip | 91750-1805 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | LVPR4.5D* |
| Legal Description | *TR=32784 LOT 33 |
| Legal Subdivision | 32784 |
| Legal Tract | 32784 |
| Legal Block | 2 |
| Legal Lot Number | 33 |
| Jurisdiction | LOS ANGELES CA |
| Township / Civil Division | EAST SAN GABRIEL VALLEY |
| Census Block Group | 2 |
| Census Block | 2010 |
| Census Tract | 400207 |
4638 Blackrock Ave is owner-occupied and held in a trust since October 2017.
Source: Los Angeles County records, as of August 25, 2026
| Owner of Record | 2 Trust Names on File |
|---|---|
| Mailing Address | 4638 BLACKROCK AVE, LA VERNE, CA 91750-1805 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | 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 24, 2013 · Amount on File |
| Deed Sale | Dec 24, 2013 · Amount on File |
| Deed Document Number | 20131801880 |
| Last Transfer Date | Oct 7, 2017 |
| Transfer Doc | 0001183610 |
| Record Updated | Oct 29, 2026 |
| Document Type | Quit Claim Deed |
|---|---|
| Jurisdiction | LOS ANGELES CA |
| Recording Date | Oct 16, 2017 |
| Property Address | 4638 BLACKROCK AVE, LA VERNE, CA 91750-1805 |
| Document Number | 0001183610 |
| Instrument Date | Oct 7, 2017 |
| Instrument | 1183610 |
| Transaction Type | Transfer |
| Record Updated | Oct 24, 2017 |
| Title Company | ATTORNEY ONLY |
| Tax | $0.00 |
|---|---|
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Personal Trust |
| Address | 4789 WESTSIDE DR LA VERNE CA 917501861, LA VERNE, CA 91750-1861 |
The 2025 property tax bill for 4638 Blackrock Ave was $1,378 with a homeowner's exemption.
Source: Los Angeles County assessment roll, as of August 25, 2026
| Type | Name |
|---|---|
| State | California |
| County | Los Angeles County |
| Municipality | La Verne City |
| Unified School District | Bonita Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $81,993 (+2%) Land $32,570 Building $49,423 | |
| 2025 | $1,378.00 Homeowner's exemption | $80,386 Land $31,932 Building $48,454 |
| 2023 | $1,299.00 (+1.96%) Homeowner's exemption | $77,266 Land $30,693 Building $46,573 |
| 2022 | $1,274.00 |
Assessed value and assessed market value are set for property tax purposes, not market price estimates; both are a fraction of this property's market value.
FEMA maps place 4638 Blackrock Ave in Zone X, an area of minimal flood risk, though there have been 1 flood claim nearby since 1991.
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 Claims | 1 (1991) |
| Most Recent Claim | Mar 1991 · river or lake 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 4638 Blackrock Ave is low, with a 0.04% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 64% of the US · lower than 79% of California |
|---|---|
| Wildfire Likelihood | 0.04% annual chance |
| Exposure | None beyond 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 | 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 |
| 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 449 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Frontier Fiber | 7,000 / 7,000 |
| Spectrum Cable · Fiber in parts of the area | 1,000 / 1,000 |
| Verizon Fixed Wireless | 300 / 20 |
| Starlink Satellite | 280 / 30 |
| T-Mobile Fixed Wireless | 100 / 20 |
May also be available: GeoLinks.
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