San Bernardino County property record for 559 N Mountain Ave, Upland, CA 91786
| Property Type | Commercial Office |
|---|---|
| Details | 37,727 sqft · built 1980 |
| Lot Size | 2.93 acres (128,066 sqft) |
| Owner | Company Name on File |
| Tax Bill | $101,795 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 1007-211-46-0000 |
| Primary APN | 1007-211-46-0000 |
|---|
| Units | 17 Units |
|---|---|
| Stories | 2 Stories |
| Building Area | 37,727 sqft Gross Area |
| Year Built | Built 1980 |
|---|---|
| Effective Year Built | Effective 1980 |
| Construction Type | Wood |
| Fire Resistance | Wood or Wood & Steel Frame |
| Lot Area | 128,066 sqft |
| Sewer | Municipal |
|---|---|
| Water Source | Commercial |
| Street Address | 559 N MOUNTAIN AVE |
|---|---|
| City | UPLAND |
| State | CA |
| Zip | 91786-5016 |
| Property Category | Commercial |
| Property Type | Commercial > Office > Commercial Office |
| Legal Description | TRACT 11463 LOT 2 |
| Legal Tract | 11463 |
| Legal Block | 4 |
| Legal Lot Number | 2 |
| Jurisdiction | SAN BERNARDINO CA |
| Township / Civil Division | ONTARIO |
| Census Block Group | 4 |
| Census Block | 4001 |
| Census Tract | 823 |
559 N Mountain Ave, a commercial property, is owned by a company.
Source: San Bernardino County records, as of July 14, 2026
| Owner of Record | Company Name on File |
|---|---|
| Mailing Address | PO BOX 670, UPLAND, CA 91785-0670 |
| Owner Type | Company |
| Vesting | Sole Owner |
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 | Name on Deed |
|---|---|
| Record Updated | Sep 20, 2026 |
The 2025 property tax bill for 559 N Mountain Ave was $101,795.
Source: San Bernardino County assessment roll, as of July 14, 2026
| Type | Name |
|---|---|
| State | California |
| County | San Bernardino County |
| Municipality | Upland City |
| Unified School District | Upland Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $9,623,700 (+2%) Land $3,329,280 Building $6,294,420 | |
| 2025 | $101,795.00 | $9,435,000 Land $3,264,000 Building $6,171,000 |
| 2023 | $61,510.00 (+2.18%) | $5,726,056 Land $1,544,528 Building $4,181,528 |
| 2022 | $60,198.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 559 N Mountain Ave in Zone X, an area of minimal flood risk.
Source: FEMA National Flood Hazard Layer, effective October 12, 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 559 N Mountain 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 | CITY OF UPLAND serves 78,376 people · EPA ID CA3610050 |
|---|---|
| Water Source | Surface water |
| Last State Inspection | Oct 2025 |
| 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. This system sells water to local utilities; the supplier billing this address may be one of them.
Source: FCC Broadband Data Collection, based on 491 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 |
| Starlink Satellite | 280 / 30 |
| T-Mobile Fixed Wireless | 100 / 20 |
May also be available: Frontier, GeoLinks, Verizon.
Search by:
By searching, you agree to: Terms • Privacy • Disclosures