Black Hawk County property record for 502 Williston Ave, Waterloo, IA 50702
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 1 ba · 1,655 sqft · built 1931 |
| Lot Size | 0.174 acres (7,560 sqft) |
| Owner | 2 Individual Names on Record |
| Tax Bill | $2,554 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 8913-35-127-001 |
| Primary APN | 8913-35-127-001 |
|---|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 1 Bath |
| Total Rooms | 7 Rooms |
| Stories | 1 Story |
| Building Area | 1,655 sqft Living Area |
| 1st Floor Area | 1,068 sqft |
| Attic | Attic |
| Attic Area | 587 sqft |
| Basement Area | 1,068 sqft |
| Flooring | Carpet |
| Interior Walls | Plaster |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1931 |
|---|---|
| Effective Year Built | Effective 1931 |
| Exterior Material | Asbestos |
| Construction Type | Frame |
| Roof Type | Gable |
| Roof Material | Asphalt |
| Lot Area | 7,560 sqft (0.174 acres) |
| Lot Dimensions | 54 ft deep x 140 ft wide |
| Garage Type | Detached |
| Garage Area | 216 sqft |
| Parking Spaces | 1 Parking Space |
| Porch | Porch |
| Porch Area | 96 sqft |
| Cooling System | Central |
|---|---|
| Heating System | HVAC |
| Street Address | 502 WILLISTON AVE |
|---|---|
| City | WATERLOO |
| State | IA |
| Zip | 50702-2938 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | FAYS ADDITION LOT 6 BLK 1 |
| Legal Range | 13W |
| Legal Township | 89N |
| Legal Section | 35 |
| Legal Subdivision | FAYS ADDITION |
| Legal Block | 1 |
| Legal Lot Number | 6 |
| Jurisdiction | BLACK HAWK IA |
| Township / Civil Division | WATERLOO |
| Census Block Group | 1 |
| Census Block | 1002 |
| Census Tract | 1100 |
Source: Black Hawk County records, as of May 27, 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | 2 Individual Names on Record |
|---|---|
| Mailing Address | 502 WILLISTON AVE, WATERLOO, IA 50702-2938 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Deed Names | 2 Names on Deed |
|---|---|
| Record Updated | Sep 20, 2026 |
Source: Black Hawk County assessment roll, as of October 17, 2025
| Type | Name |
|---|---|
| State | Iowa |
| County | Black Hawk County |
| Municipality | Waterloo City |
| Unified School District | Waterloo Community School District (PK - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2025 | $2,554.00 Homeowner's exemption | $152,030 (+7.33%) Land $19,450 Building $132,580 | $152,030 (+7.33%) Land $19,450 Building $132,580 |
| 2024 | $2,554.00 (+13.11%) | ||
| 2023 | $141,650 (+26.79%) Land $19,450 Building $122,200 | $141,650 (+26.79%) Land $19,450 Building $122,200 | |
| 2022 | $2,258.00 Homeowner's exemption | $111,720 Land $19,450 Building $92,270 | |
| 2021 | $111,720 Land $19,450 Building $92,270 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
Source: FEMA National Flood Hazard Layer, effective September 27, 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 Claims | 1 (2010) |
| Claims Outside the SFHA | 1 of 1 |
| Most Recent Claim | Jul 2010 · Severe Storms, Flooding, And Tornadoes |
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.
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 | WATERLOO WATER WORKS serves 69,504 people · EPA ID IA0790074 |
|---|---|
| Water Source | Groundwater |
| Last State Inspection | Nov 2023 |
| Lead | 2 ppb (2025) 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 734 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Waterloo Fiber Fiber | 10,000 / 10,000 |
| Metronet Fiber | 5,120 / 5,120 |
| Mediacom Xtream Cable · Fiber in parts of the area | 1,000 / 50 |
May also be available: GigFire, Nextlink, T-Mobile, Verizon.
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