Day County property record for 329 Slowacki Ave, Grenville, SD 57239
| Property Type | Other Improved |
|---|---|
| Lot Size | 6 acres (261,360 sqft) |
| Owner | Trust Name on File |
| Tax Bill | $752 (2023) |
| Flood Zone | Zone X (minimal risk) |
| APN | 73.03.0101 |
| Primary APN | 73.03.0101 |
|---|
| Lot Area | 261,360 sqft (6 acres) |
|---|
| Street Address | 329 SLOWACKI AVE |
|---|---|
| City | GRENVILLE |
| State | SD |
| Zip | 57239 |
| Property Category | Other |
| Property Type | Other > Other Improved |
| Legal Description | LOTS 1 THRU 6, BLK 1 FIRST ADDITION |
| Legal Subdivision | FIRST ADD |
| Legal Block | 1 |
| Legal Lot Number | 1-6 |
| Jurisdiction | DAY SD |
| Township / Civil Division | GRENVILLE |
| Census Block Group | 1 |
| Census Block | 1105 |
| Census Tract | 952900 |
329 Slowacki Ave is held in a trust.
Source: Day County records, as of July 20, 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 | Trust Name on File |
|---|---|
| Mailing Address | PO BOX 151, GRENVILLE, SD 57239-0151 |
| Owner Type | Company |
| Vesting | Trust, Living Trust |
| Deed Names | Name on Deed |
|---|---|
| Record Updated | Sep 20, 2026 |
Source: Day County assessment roll, as of January 5, 2026
| Type | Name |
|---|---|
| State | South Dakota |
| County | Day County |
| Municipality | Grenville Town |
| Unified School District | Webster School District 18-5 (PK - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $101,172 (+18%) Land $26,231 Building $74,941 | |
| 2025 | $85,739 Land $22,230 Building $63,509 | |
| 2023 | $752.00 | $68,710 (-) Land $13,000 Building $55,710 |
| 2022 | $68,710 Land $13,000 Building $55,710 | |
| 2021 | $646.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 329 Slowacki 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 March 14, 2024 · OpenFEMA NFIP redacted claims and policies, as of September 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Nearest Special Flood Hazard Area | Zone AE, within 500 ft |
| Flood Insurance Requirement | Not required lenders may require it |
| Nearby Flood Policies | 3 in force |
| Nearby Flood Claims | 80 (1995–2011) |
| Claims Outside the SFHA | 40 of 80 |
| Most Recent Claim | Jul 2011 · Flooding |
| 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 329 Slowacki Ave is low, with 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 93% of the US · lower than 89% of South Dakota |
|---|---|
| Wildfire Likelihood | 0.01% annual chance |
| Exposure | Direct burnable vegetation |
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 | GRENVILLE serves 48 people · EPA ID SD4600146 |
|---|---|
| Water Source | Purchased surface water from WEB WATER DEVELOPMENT ASSOCIATION |
| Last State Inspection | Nov 2023 |
| Lead | 1 ppb (2023) action level 15 ppb |
| Water Quality | None last 10 years |
|---|---|
| Treatment and Procedure | None last 10 years |
| Monitoring and Reporting | 1 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.
Source: FCC Broadband Data Collection, based on 23 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Venture Communications Cooperative Fiber | 1,000 / 1,000 |
May also be available: Verizon.
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