San Bernardino County property record for 421 N 12th Ave, Upland, CA 91786 · Last verified July 2026
| Property Type | Duplex |
|---|---|
| Details | 6 bd · 3 ba · 2,228 sqft · built 1928 |
| Lot Size | 0.162 acres (7,034 sqft) |
| Owner | Individual Name on File |
| Last Sale | $370,000 (Mar 2008) |
| Tax Bill | $5,781 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 1046-471-16-0000 |
| Primary APN | 1046-471-16-0000 |
|---|
| Bedrooms | 6 Beds |
|---|---|
| Full Baths | 3 Baths |
| Total Rooms | 12 Rooms |
| Stories | 1 Story |
| Building Area | 2,228 sqft Living Area |
| Gross Area | 2,628 sqft |
| 1st Floor Area | 2,228 sqft |
| Year Built | Built 1928 |
|---|---|
| Effective Year Built | Effective 1928 |
| Architectural Style | Conventional |
| Construction Type | Frame |
| Roof Material | Composition Shingle |
| Lot Area | 7,034 sqft (0.162 acres) |
| Garage Type | Attached |
| Garage Area | 400 sqft |
| Parking Spaces | 2 Parking Spaces |
| Porch | Patio/Porch |
|---|---|
| Porch Area | 120 sqft |
| Patio Area | 120 sqft |
| Total Buildings | 2 Buildings |
| Cooling System | None |
|---|---|
| Heating System | Floor/Wall Furnace |
| Sewer | Municipal |
| Water Source | Commercial |
| Street Address | 421 N 12TH AVE |
|---|---|
| City | UPLAND |
| State | CA |
| Zip | 91786-5537 |
| Property Category | Residential |
| Property Type | Residential > Multi-Unit > Duplex |
| Legal Description | ONTARIO COLONY LANDS COM 277.6 FT S AND 314 1/2 FT E OF NW COR LOT 576 W 132.75 FT S 53.8 FT E 132.75 FT N 53.8 FT EX ALLEY |
| Legal Subdivision | ONTARIO COLONY LANDS |
| Legal Block | 3 |
| Legal Lot Number | 576 |
| Jurisdiction | SAN BERNARDINO CA |
| Township / Civil Division | ONTARIO |
| Census Block Group | 3 |
| Census Block | 3003 |
| Census Tract | 901 |
Source: San Bernardino County records · APN 1046-471-16-0000
Assessment roll updated July 14, 2026 · Last verified July 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | Individual Name on File |
|---|---|
| Mailing Address | 421 N 12TH AVE, UPLAND, CA 91786-5537 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Sole Owner |
| Deed Names | Verified Name on Deed |
|---|---|
| Last Sale | Mar 26, 2008 · Amount on Record |
| Deed Sale | Mar 26, 2008 · Amount on Record |
| Prior Sale | Jan 17, 2008 |
| Deed Document Number | 2008131556 |
| Last Transfer Date | Jun 24, 2011 |
| Transfer Doc | 0000332001 |
| Record Updated | Sep 20, 2026 |
Source: San Bernardino County records · Assessment roll updated July 14, 2026 · Last verified July 2026
| Type | Name |
|---|---|
| State | California |
| County | San Bernardino County |
| Municipality | Upland City |
| Unified School District | Upland Unified School District (KG - 12) |
Assessed value is set for property tax purposes and is not a market price estimate.
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $495,722 (+2%) Land $172,833 Building $322,889 | |
| 2025 | $5,781.00 (+11.49%) | $486,002 (+4.04%) Land $169,444 Building $316,558 |
| 2023 | $5,185.00 (+2.19%) | $467,131 Land $162,865 Building $304,266 |
| 2022 | $5,074.00 |
Source: FEMA National Flood Hazard Layer, San Bernardino County (06071C), updated October 12, 2026 · USDA Forest Service Wildfire Risk to Communities, 2nd edition (2024), fuels as of 2020 · Last verified October 2026
| FEMA Flood Zone | Zone X |
|---|---|
| Special Flood Hazard Area | No |
| Flood Hazard | Minimal |
| 500-Year Floodplain | No |
| Wildfire Risk | Not rated no burnable land in reach |
|---|---|
| Wildfire Likelihood | Negligible |
| Exposure | None beyond ember reach |
Values are read at the parcel center point; lenders make the official flood determination.
Source: FCC Broadband Data Collection, availability as of December 31, 2025 · Published October 2026 · based on 546 locations within about half a mile of this property
| Provider | Technology | Download / Upload (Mbps) |
|---|---|---|
| Frontier | Fiber | 7,000 / 7,000 |
| Spectrum | Cable | 1,000 / 1,000 |
| Verizon | Fixed Wireless | 300 / 20 |
| AT&T | Fixed Wireless | 100 / 20 |
| Starlink | Satellite (low-earth orbit) | 280 / 30 |
May also be available at this address: T-Mobile USA, Spectrum, California Internet. Availability varies by address; speeds are provider-advertised maximums, not measured.
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