Benton County property record for 403 1st Ave, Keystone, IA 52249
| Property Type | Manufactured or Modular Home |
|---|---|
| Details | 3 bd · 1.5 ba · 1,496 sqft · built 1977 |
| Lot Size | 0.31 acres (13,500 sqft) |
| Owner | 2 Individual Names on File |
| Tax Bill | $2,434 (2026) |
| Flood Zone | Zone X (minimal risk) |
| APN | 09002400 |
| Primary APN | 09002400 |
|---|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 1.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 8 Rooms |
| Stories | 1 Story |
| Building Area | 1,496 sqft Living Area |
| Basement Area | 1,496 sqft |
| Finished Basement | 1,325 sqft |
| Unfinished Basement | 171 sqft |
| Flooring | Carpet |
| Interior Walls | Wallboard/Drywall |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1977 |
|---|---|
| Effective Year Built | Effective 1977 |
| Architectural Style | Modular |
| Exterior Material | Vinyl |
| Construction Type | Frame |
| Foundation Type | Wood |
| Roof Type | Hip |
| Roof Material | Asphalt |
| Lot Area | 13,500 sqft (0.31 acres) |
| Lot Dimensions | 150 ft deep x 90 ft wide |
| Garage Type | Attached |
| Garage Area | 720 sqft |
| Parking Spaces | 3 Parking Spaces |
| Cooling System | HVAC |
|---|---|
| Heating System | Radiant |
| Heating Fuel | Electric |
| Sewer | Municipal |
| Water Source | Commercial |
| Street Address | 403 1ST AVE |
|---|---|
| City | KEYSTONE |
| State | IA |
| Zip | 52249-9600 |
| Property Category | Residential |
| Property Type | Residential > Prefabricated > Manufactured or Modular Home |
| Legal Description | FRANZENBURGS 4TH ADD LOT 2 |
| Legal Subdivision | FRANZENBURGS 4TH |
| Legal Lot Number | 2 |
| Jurisdiction | BENTON IA |
| Township / Civil Division | KANE |
| Census Block Group | 3 |
| Census Block | 3039 |
| Census Tract | 960600 |
403 1st Ave, a residential property, is owned by two individuals.
Source: Benton County records, as of October 20, 2026
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | PO BOX 41, KEYSTONE, IA 52249-0041 |
| Owner Type | Individual |
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 |
|---|---|
| Record Updated | Oct 29, 2026 |
The 2026 property tax bill for 403 1st Ave was $2,434.
Source: Benton County assessment roll, as of September 30, 2025
| Type | Name |
|---|---|
| State | Iowa |
| County | Benton County |
| Municipality | Keystone City |
| Unified School District | Benton Community School District (PK - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $2,434.00 | $212,300 (-) Land $27,600 Building $184,700 | $212,300 (-) Land $27,600 Building $184,700 |
| 2025 | $212,300 Land $27,600 Building $184,700 | $212,300 Land $27,600 Building $184,700 | |
| 2024 | $2,524.00 | ||
| 2023 | $210,700 (+32.93%) Land $28,100 Building $182,600 | $210,700 Land $28,100 Building $182,600 | |
| 2022 | $2,126.00 | $158,500 Land $22,500 Building $136,000 | |
| 2021 | $158,500 Land $22,500 Building $136,000 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 403 1st Ave 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 September 22, 2023
| 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 |
Values are read at the parcel center point; lenders make the official flood determination.
Wildfire risk around 403 1st Ave 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 99.1% of the US · lower than 91% 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 | KEYSTONE WATER SUPPLY serves 599 people · EPA ID IA0640030 |
|---|---|
| Water Source | Groundwater |
| Last State Inspection | Mar 2026 |
| Lead | 6 ppb (2022–2024) action level 15 ppb |
| Water Quality | Treatment failure resolved · May 2021 Nitrite resolved · Apr 2021 |
|---|---|
| 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 212 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Verizon Fixed Wireless | 300 / 20 |
| Starlink Satellite | 280 / 30 |
| Keystone Communications Fiber | 250 / 250 |
| GigFire Fixed Wireless | 150 / 130 |
| T-Mobile Fixed Wireless | 100 / 20 |
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