Pennington County property record for 233 Swanzey St, Keystone, SD 57751
| Property Type | Other Improved |
|---|---|
| Details | 3 bd · 1 ba · 1,040 sqft · built 2019 |
| Lot Size | 0.16 acres (6,970 sqft) |
| Owner | Company Name on File |
| Last Sale | $455,000 (Jun 2017) |
| Tax Bill | $3,546 (2025) |
| Flood Zone | Zone AE (high risk) |
| APN | 70-08-279-025 |
| Primary APN | 70-08-279-025 |
|---|---|
| Alternative APN |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 1 Bath |
| Stories | 1 Story |
| Building Area | 1,040 sqft Total Area |
| Basement Area | 646 sqft |
| Unfinished Basement | 646 sqft |
| Year Built | Built 2019 |
|---|---|
| Effective Year Built | Effective 2019 |
| Architectural Style | Other |
| Lot Area | 6,970 sqft (0.16 acres) |
| Porch | Open Porch |
| Deck Area | Deck Area |
| Account Number | 51753 |
|---|---|
| Street Address | 233 SWANZEY ST |
| City | KEYSTONE |
| State | SD |
| Zip | 57751-9998 |
| Property Category | Other |
| Property Type | Other > Other Improved |
| Legal Description | SWANZEY ADD, TRACT E |
| Legal Subdivision | SWANZEY ADD |
| Legal Tract | E |
| Jurisdiction | PENNINGTON SD |
| Township / Civil Division | KEYSTONE |
| Census Block Group | 1 |
| Census Block | 1064 |
| Census Tract | 11005 |
233 Swanzey St is owned by a company that bought it in June 2017.
Source: Pennington County records, as of September 14, 2026
| Owner of Record | Company Name on File |
|---|---|
| Mailing Address | PO BOX 555, HILL CITY, SD 57745-0555 |
| Owner Type | Company |
| Vesting | Company |
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 | Name on Deed |
|---|---|
| Last Sale | Jun 1, 2017 · Amount on File |
| Deed Sale | Jun 1, 2017 · Amount on File |
| Record Updated | Oct 29, 2026 |
The 2025 property tax bill for 233 Swanzey St was $3,546.
Source: Pennington County assessment roll, as of September 14, 2026
| Type | Name |
|---|---|
| State | South Dakota |
| County | Pennington County |
| Municipality | Keystone Town |
| Unified School District | Hill City School District 51-2 (PK - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $287,800 (-) Land $69,700 Building $218,100 | |
| 2025 | $3,546.00 | $287,800 Land $69,700 Building $218,100 |
| 2023 | $3,955.00 (+8.15%) | $274,300 Land $69,700 Building $204,600 |
| 2022 | $3,657.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 233 Swanzey St in Zone AE, a high-risk flood area within the regulatory floodway; flood insurance is required for federally backed loans.
Source: FEMA National Flood Hazard Layer, effective June 11, 2026 · OpenFEMA NFIP redacted claims and policies, as of September 2026
| FEMA Flood Zone | Zone AE high risk |
|---|---|
| 100-Year Floodplain | Yes 1% annual chance |
| Floodway | Yes |
| Base Flood Elevation | Varies along the reach; see FIRM |
| Flood Insurance Requirement | Required federally backed loans |
| Flood Insurance Cost | Premium on File median of 17 policies |
| Nearby Flood Policies | 17 in force |
| Nearby Flood Claims | 3 (1995–2001) |
| Claims Outside the SFHA | 2 of 3 |
| Most Recent Claim | Jul 2001 · river or lake 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 233 Swanzey St is moderate, ranking above 66% of the US, with a 0.2% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Moderate above 66% of the US · above 74% of South Dakota |
|---|---|
| Wildfire Likelihood | 0.2% annual chance |
| Exposure | Indirect within ember reach |
| Adjoins Burnable Land | Yes |
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 | KEYSTONE serves 349 people · EPA ID SD4601082 |
|---|---|
| Water Source | Groundwater |
| Last State Inspection | Oct 2024 |
| 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.
Source: FCC Broadband Data Collection, based on 34 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| TSC Fiber · DSL | 1,000 / 1,000 |
May also be available: T-Mobile, Verizon.
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