Sioux County property record for 109 11th St, Alton, IA 51003
| Property Type | Warehouse, Storage |
|---|---|
| Details | 9,120 sqft · built 1997 |
| Lot Size | 1.2 acres (52,272 sqft) |
| Owner | Company Name on File |
| Last Sale | $400,000 (Dec 2025) |
| Tax Bill | $7,888 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 23-02-332-002 |
| Primary APN | 23-02-332-002 |
|---|
| Stories | 1 Story |
|---|---|
| Building Area | 9,120 sqft Gross Area |
| 1st Floor Area | 9,120 sqft |
| Overhead Door | Overhead Door |
| Year Built | Built 1997 |
|---|---|
| Effective Year Built | Effective 1997 |
| Exterior Material | Metal |
| Construction Type | Frame |
| Roof Material | Metal |
| Lot Area | 52,272 sqft (1.2 acres) |
| Canopy | 135 sqft |
| Heating System | Forced Air with A/C |
|---|---|
| Heating Fuel | Gas |
| Street Address | 109 11TH ST |
|---|---|
| City | ALTON |
| State | IA |
| Zip | 51003-7711 |
| Property Category | Industrial |
| Property Type | Industrial > Warehouse, Storage |
| Legal Description | BLK 5 ORIGINAL |
| Legal Subdivision | ORIGINAL ALTON |
| Legal Block | 5 |
| Jurisdiction | SIOUX IA |
| Township / Civil Division | NASSAU |
| Census Block Group | 3 |
| Census Block | 3018 |
| Census Tract | 70500 |
109 11th St, an industrial property, is owned by a company that bought it in December 2025.
Source: Sioux County records, as of September 1, 2026
| Owner of Record | Company Name on File |
|---|---|
| Mailing Address | 1920 ALBANY PL SE, ORANGE CITY, IA 51041-9601 |
| Owner Type | Company |
| Vesting | Company |
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 |
|---|---|
| Last Sale | Dec 17, 2025 · Amount on File |
| Deed Sale | Dec 17, 2025 · Amount on File |
| Deed Document Number | 20256382 |
| Deed Book / Page | 2025 / 6382 |
| Record Updated | Oct 29, 2026 |
The 2025 property tax bill for 109 11th St was $7,888, up 39.5% from the year before.
Source: Sioux County assessment roll, as of October 9, 2025
| Type | Name |
|---|---|
| State | Iowa |
| Municipality | Alton City |
| County | Sioux County |
| Unified School District | MOC-Floyd Valley Community School District (PK - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2025 | $7,888.00 (+39.46%) | $351,640 Land $33,000 Building $318,640 | $351,640 Land $33,000 Building $318,640 |
| 2024 | $5,656.00 | ||
| 2023 | $268,070 (+14.84%) Land $33,000 Building $235,070 | $268,070 Land $33,000 Building $235,070 | |
| 2022 | $5,022.00 | $233,430 Land $22,500 Building $210,930 | |
| 2021 | $233,430 Land $22,500 Building $210,930 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 109 11th St in Zone X, an area of minimal flood risk, within 500 ft of a high-risk flood zone.
Source: FEMA National Flood Hazard Layer, effective August 1, 2022 · OpenFEMA NFIP redacted claims and policies, as of September 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Nearest Special Flood Hazard Area | Zone A, within 500 ft |
| Flood Insurance Requirement | Not required lenders may require it |
| Nearby Flood Policies | 2 in force |
| Nearby Flood Claims | 3 (2024) |
| Claims Outside the SFHA | 1 of 3 |
| Most Recent Claim | Jun 2024 · Severe Storms, Flooding, Straight-line Winds, And Tornadoes |
| Claims by Event |
|
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 109 11th St is low, with less than a 0.01% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 99.8% of the US · lower than 98.1% of Iowa |
|---|---|
| Wildfire Likelihood | Under 0.01% 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 | ALTON MUNICIPAL WATER DEPARTMENT serves 1,248 people · EPA ID IA8403029 |
|---|---|
| Water Source | Purchased groundwater from ORANGE CITY MUNICIPAL WATER DEPARTMENT |
| Last State Inspection | Dec 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. The service area is an EPA estimate; the actual supplier may differ.
Source: FCC Broadband Data Collection, based on 104 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Westel Systems Fiber | 1,000 / 1,000 |
| T-Mobile Fixed Wireless | 100 / 20 |
May also be available: AT&T, Nextlink, Verizon.
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