San Bernardino County property record for 6415 Onyx Ave, Alta Loma, CA 91701
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 2 ba · 2,020 sqft · built 1976 |
| Lot Size | 0.231 acres (10,043 sqft) |
| Owner | 2 Trust Names on File |
| Last Sale | $435,000 (Sep 2010) |
| Tax Bill | $6,108 (2025) |
| Deeds & Mortgages | Jun 2021 Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 1062-581-50-0000 |
| Primary APN | 1062-581-50-0000 |
|---|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 8 Rooms |
| Stories | 1 Story |
| Building Area | 2,020 sqft Living Area |
| Gross Area | 2,664 sqft |
| 1st Floor Area | 2,020 sqft |
| Family Room | Family Room |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1976 |
|---|---|
| Effective Year Built | Effective 1977 |
| Architectural Style | Modern |
| Exterior Material | Stucco |
| Construction Type | Frame |
| Roof Material | Wood Shingle |
| Lot Area | 10,043 sqft (0.231 acres) |
| Lot Dimensions | 121 ft deep x 83 ft wide |
| Garage Type | Attached |
| Garage Area | 644 sqft |
| Parking Spaces | 2 Parking Spaces |
| Porch | Patio/Porch |
| Porch Area | 168 sqft |
| Patio Area | 168 sqft |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Sewer | Municipal |
| Water Source | Commercial |
| Street Address | 6415 ONYX AVE |
|---|---|
| City | RANCHO CUCAMONGA |
| State | CA |
| Zip | 91701-4101 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | TRACT 9171 LOT 16 |
| Legal Subdivision | TRACT NO 9171 |
| Legal Tract | 9171 |
| Legal Block | 1 |
| Legal Lot Number | 16 |
| Jurisdiction | SAN BERNARDINO CA |
| Township / Civil Division | ONTARIO |
| Census Block Group | 1 |
| Census Block | 1001 |
| Census Tract | 2013 |
6415 Onyx Ave is owner-occupied and held in a trust since September 2010.
Source: San Bernardino County records, as of July 14, 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 | 2 Trust Names on File |
|---|---|
| Mailing Address | 6415 ONYX AVE, RANCHO CUCAMONGA, CA 91701-4101 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | Trust, Revocable Trust |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Sep 10, 2010 · Amount on File |
| Deed Sale | Sep 10, 2010 · Amount on File |
| Deed Document Number | 2010372402 |
| Prior Transfer Date | Dec 18, 2003 |
| Prior Transfer Doc | 0000013102 |
| Record Updated | Oct 29, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | SAN BERNARDINO CA |
| Property Address | 6415 ONYX AVE, ALTA LOMA, CA 91701-4101 |
| Transaction Type | Mortgage |
| Record Updated | Jun 22, 2021 |
| Title Company | NORTH AMERICAN TITLE COMPANY |
| Name | Verified Name |
|---|---|
| Address | 6415 ONYX AVE, RANCHO CUCAMONGA, CA 91701-4101 |
| Document Number | 0000259721 |
|---|---|
| Date | Jun 8, 2021 |
| Instrument | 2021-0259721 |
| Name | CALTECH EMPLOYEES FCU |
|---|---|
| Type | Credit Union |
| Address | LA CANADA FLINTRIDGE, CA 91011 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 361 Months |
| Due | Jul 1, 2051 |
The 2025 property tax bill for 6415 Onyx Ave was $6,108.
Source: San Bernardino County assessment roll, as of July 14, 2026
| Type | Name |
|---|---|
| State | California |
| County | San Bernardino County |
| Municipality | Rancho Cucamonga City |
| Elementary School District | Alta Loma Elementary School District (KG - 08) |
| Secondary School District | Chaffey Joint Union High School District (09 - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $568,459 (+2%) Land $198,960 Building $369,499 | |
| 2025 | $6,108.00 Homeowner's exemption | $557,313 Land $195,059 Building $362,254 |
| 2023 | $5,818.00 (+0.28%) Homeowner's exemption | $535,671 Land $187,484 Building $348,187 |
| 2022 | $5,802.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 6415 Onyx Ave in Zone X, an area of minimal flood risk.
Source: FEMA National Flood Hazard Layer, effective October 12, 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 | 1 in force |
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.
The area around 6415 Onyx 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 | CUCAMONGA VALLEY WATER DISTRICT serves 213,375 people · EPA ID CA3610018 |
|---|---|
| Water Source | Surface water |
| Last State Inspection | Feb 2025 |
| 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 435 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Spectrum Cable · Fiber in parts of the area | 1,000 / 1,000 |
| AT&T Fixed Wireless | 100 / 20 |
May also be available: Frontier, GeoLinks, T-Mobile, Verizon.
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