Kingsbury County property record for 20859 435th Ave, De Smet, SD 57231
| Property Type | Single Family Home |
|---|---|
| Lot Size | 80 acres (3,484,800 sqft) |
| Owner | 2 Individual Names on File |
| Tax Bill | $3,499 (2026) |
| Flood Zone | Zone X (minimal risk) |
| APN | 1939 |
| Primary APN | 1939 |
|---|
| Lot Area | 3,484,800 sqft (80 acres) |
|---|
| Street Address | 20859 435TH AVE |
|---|---|
| City | DE SMET |
| State | SD |
| Zip | 57231-6418 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | N2SE 2-110-56 |
| Legal Range | 56 |
| Legal Township | 110 |
| Legal Section | 02 |
| Jurisdiction | KINGSBURY SD |
| Township / Civil Division | DE SMET |
| Census Block Group | 1 |
| Census Block | 1106 |
| Census Tract | 958200 |
20859 435th Ave, a single family home, is owned by two individuals.
Source: Kingsbury County records, as of October 1, 2026
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 301 JOLIET AVE SE, DE SMET, SD 57231-2413 |
| 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 20859 435th Ave was $3,499.
Source: Kingsbury County assessment roll, as of October 1, 2026
| Type | Name |
|---|---|
| State | South Dakota |
| County | Kingsbury County |
| County Subdivision | De Smet Township |
| Unified School District | De Smet School District 38-2 (PK - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $3,499.00 | $414,262 (+0.46%) Land $162,552 Building $251,710 |
| 2025 | $3,499.00 | $412,366 Land $160,656 Building $251,710 |
| 2023 | $2,572.00 | $324,911 Land $146,235 Building $178,676 |
| 2022 | $2,572.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 20859 435th Ave in Zone X, an area of minimal flood risk, though there have been 3 flood claims nearby since 1987.
Source: FEMA National Flood Hazard Layer, effective May 21, 2024 · 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 | 3 (1987) |
| Most Recent Claim | May 1987 · river or lake flooding |
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 20859 435th Ave is moderate, ranking above 40% of the US, with a 0.05% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Moderate above 40% of the US · lower than 72% of South Dakota |
|---|---|
| Wildfire Likelihood | 0.05% 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 | KINGBROOK II RURAL WATER SYSTEM private · serves 2,715 people · EPA ID SD4600511 |
|---|---|
| Water Source | Groundwater |
| Last State Inspection | Aug 2024 |
| Lead | 2 ppb (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.
Source: FCC Broadband Data Collection, based on 1 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Valley FiberCom Fiber | 1,000 / 1,000 |
| Midco Fixed Wireless | 100 / 20 |
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