Union County property record for 48337 W Authier Rd, Jefferson, SD 57038
| Property Type | Single Family Home |
|---|---|
| Details | 2 bd · 2 ba · 896 sqft · built 1942 |
| Lot Size | 5 acres (217,800 sqft) |
| Owner | 2 Individual Names on Record |
| Tax Bill | $1,023 (2026) |
| Flood Zone | Zone X (moderate risk) |
| APN | 11.00.05.2025 |
| Primary APN | 11.00.05.2025 |
|---|
| Bedrooms | 2 Beds |
|---|---|
| Full Baths | 2 Baths |
| Stories | 1 Story |
| Building Area | 896 sqft Living Area |
| Interior Walls | Wood |
| Year Built | Built 1942 |
|---|---|
| Effective Year Built | Effective 1942 |
| Exterior Material | Aluminum/Vinyl |
| Construction Type | Wood |
| Foundation Type | Wood |
| Roof Material | Composition Shingle |
| Lot Area | 217,800 sqft (5 acres) |
| Garage Type | Detached |
| Deck Area | Deck Area |
| Cooling System | HVAC |
|---|---|
| Heating System | Forced Air with A/C |
| Street Address | 48337 W AUTHIER RD |
|---|---|
| City | JEFFERSON |
| State | SD |
| Zip | 57038-6869 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | IN NE1/4NW1/4 & LOT 19 5 ACRES |
| Legal Range | 48W |
| Legal Township | 89N |
| Legal Section | 05 |
| Legal Lot Number | 19 |
| Legal Unit | 1 |
| Jurisdiction | UNION SD |
| Township / Civil Division | BIG SIOUX |
| Census Block Group | 3 |
| Census Block | 3008 |
| Census Tract | 20302 |
Source: Union County records, as of October 20, 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 | 48337 W AUTHIER RD, JEFFERSON, SD 57038-6869 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Deed Names | 2 Names on Deed |
|---|---|
| Record Updated | Oct 29, 2026 |
Source: Union County assessment roll, as of October 6, 2025
| Type | Name |
|---|---|
| State | South Dakota |
| County | Union County |
| County Subdivision | Big Sioux Township |
| Unified School District | Dakota Valley School District 61-8 (PK - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $1,023.00 (+0.1%) | $77,296 (-) Land $61,583 Building $15,713 |
| 2025 | $1,022.00 (+1.19%) | $77,296 (-23.6%) Land $61,583 Building $15,713 |
| 2024 | $1,010.00 (-29.76%) | |
| 2023 | $1,438.00 (+31.56%) | $101,169 Land $87,975 Building $13,194 |
| 2022 | $1,093.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
Source: FEMA National Flood Hazard Layer, effective May 31, 2026 · OpenFEMA NFIP redacted claims and policies, as of September 2026
| FEMA Flood Zone | Zone X moderate risk |
|---|---|
| 500-Year Floodplain | Yes 0.2% annual chance |
| Flood Insurance Requirement | Not required lenders may require it |
| Flood Insurance Cost | Premium on Record median of 18 policies |
| Nearby Flood Policies | 18 in force |
| Nearby Flood Claims | 2 (2024) |
| Claims Outside the SFHA | 2 of 2 |
| Most Recent Claim | Jun 2024 · Severe Storms, Straight-line Winds, And 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.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | High above 85% of the US · above 95% of South Dakota |
|---|---|
| Wildfire Likelihood | 0.5% 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 | CLAY RWS/SOUTH UNION private · serves 1,447 people · EPA ID SD4602185 |
|---|---|
| Water Source | Groundwater |
| Last State Inspection | Apr 2024 |
| Lead | 1 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.
Source: FCC Broadband Data Collection, based on 2 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Long Lines Metro Fiber · Cable | 1,500 / 1,500 |
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