Black Hawk County property record for 820 Knoll Ave, Waterloo, IA 50701
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 1 ba · 836 sqft · built 1929 |
| Lot Size | 0.115 acres (5,000 sqft) |
| Owner | 2 Individual Names on File |
| Tax Bill | $2,422 (2025) |
| Flood Zone | Zone X (reduced by levee) |
| APN | 8913-22-378-008 |
| Primary APN | 8913-22-378-008 |
|---|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 1 Bath |
| Total Rooms | 6 Rooms |
| Stories | 1 Story |
| Building Area | 836 sqft Living Area |
| 1st Floor Area | 836 sqft |
| Basement Area | 836 sqft |
| Finished Basement | 350 sqft |
| Game Room | Game Room |
| Flooring | Carpet |
| Interior Walls | Plaster |
| Year Built | Built 1929 |
|---|---|
| Effective Year Built | Effective 1929 |
| Exterior Material | Shingles |
| Construction Type | Frame |
| Roof Type | Gable |
| Roof Material | Metal |
| Lot Area | 5,000 sqft (0.115 acres) |
| Lot Dimensions | 125 ft deep x 40 ft wide |
| Garage Type | Detached |
| Garage Area | 576 sqft |
| Parking Spaces | 2 Parking Spaces |
| Porch | Slab |
| Porch Area | 48 sqft |
| Patio Area | 160 sqft |
| Cooling System | Central |
|---|---|
| Heating System | HVAC |
| Street Address | 820 KNOLL AVE |
|---|---|
| City | WATERLOO |
| State | IA |
| Zip | 50701-6123 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | GALLOWAY ADDITION WATERLOO LOT 275 |
| Legal Range | 13W |
| Legal Township | 89N |
| Legal Section | 22 |
| Legal Subdivision | GALLOWAY ADDITION WATERLOO |
| Legal Lot Number | 275 |
| Jurisdiction | BLACK HAWK IA |
| Township / Civil Division | WATERLOO |
| Census Block Group | 1 |
| Census Block | 1036 |
| Census Tract | 400 |
Source: Black Hawk County records, as of September 1, 2026
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 114 BROADWAY ST, GUTTENBERG, IA 52052-9025 |
| Owner Type | Individual |
| Deed Names | 2 Names on Deed |
|---|---|
| Record Updated | Oct 29, 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 | $2,422.00 (+13.82%) | $118,700 (+21.04%) Land $12,610 Building $106,090 | $118,700 (+21.04%) Land $12,610 Building $106,090 |
| 2024 | $2,128.00 (+26.52%) | ||
| 2023 | $98,070 (+28.01%) Land $12,610 Building $85,460 | $98,070 (+28.01%) Land $12,610 Building $85,460 | |
| 2022 | $1,682.00 | $76,610 Land $12,610 Building $64,000 | |
| 2021 | $76,610 Land $12,610 Building $64,000 |
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 reduced by levee · depends on levee performance |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
| Nearby Flood Policies | 3 in force |
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 625 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Metronet Fiber | 5,120 / 5,120 |
| Mediacom Xtream Cable | 1,000 / 50 |
| Verizon Fixed Wireless | 300 / 20 |
| AT&T Fixed Wireless | 100 / 20 |
| T-Mobile Fixed Wireless | 100 / 20 |
May also be available: GigFire, Nextlink.
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