Pennington County property record for 13721 Hwy 40, Keystone, SD 57751
| Property Type | Single Family Home |
|---|---|
| Details | 1 bd · 2 ba · 1,346 sqft · built 1998 |
| Lot Size | 10.1 acres (443,441 sqft) |
| Owner | 2 Individual Names on Record |
| Tax Bill | $6,762 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 71-17-352-001 |
| Primary APN | 71-17-352-001 |
|---|---|
| Alternative APN |
|
| Bedrooms | 1 Bed |
|---|---|
| Full Baths | 2 Baths |
| Half Baths | 1 Half Bath |
| Building Area | 1,346 sqft Living Area |
| Basement Area | 1,346 sqft |
| Finished Basement | 1,246 sqft |
| Year Built | Built 1998 |
|---|---|
| Effective Year Built | Effective 1998 |
| Architectural Style | Ranch |
| Lot Area | 443,441 sqft (10.1 acres) |
| Garage Type | Attached |
| Garage Area | 1,768 sqft |
| Porch | Slab |
|---|---|
| Porch Area | 350 sqft |
| Deck Area | 631 sqft |
| Patio Area | 350 sqft |
| Account Number | 41159 |
|---|---|
| Street Address | 13721 HIGHWAY 40 |
| City | KEYSTONE |
| State | SD |
| Zip | 57751-6606 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | BATTLE CREEK MOUNTAIN ESTATES SUBD, LOT 20, & LOT 25 LESS LOT H1 (ALSO IN SEC18) |
| Legal Subdivision | BATTLE CREEK MOUNTAIN ESTATES SUBD |
| Legal Lot Number | 20,25 |
| Jurisdiction | PENNINGTON SD |
| Township / Civil Division | MOUNT RUSHMORE |
| Census Block Group | 2 |
| Census Block | 2025 |
| Census Tract | 11005 |
Source: Pennington County records, as of September 14, 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 | 13721 HIGHWAY 40, KEYSTONE, SD 57751-6606 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Deed Names | 2 Names on Deed |
|---|---|
| Record Updated | Oct 29, 2026 |
Source: Pennington County assessment roll, as of September 14, 2026
| Type | Name |
|---|---|
| State | South Dakota |
| County | Pennington County |
| Unified School District | Custer School District 16-1 (PK - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $669,600 (-) Land $252,300 Building $417,300 | |
| 2025 | $6,762.00 (+5.99%) | $669,600 (+9.61%) Land $252,300 Building $417,300 |
| 2023 | $6,380.00 (+7.19%) | $610,900 Land $219,600 Building $391,300 |
| 2022 | $5,952.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
Source: FEMA National Flood Hazard Layer, effective June 11, 2026 · 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 Policies | 1 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 | High above 80% of the US · above 90% 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 | SOUTHERN BLACK HILLS WATER private · serves 947 people · EPA ID SD4602309 |
|---|---|
| Water Source | Groundwater |
| Last State Inspection | Mar 2026 |
| 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 23 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| TSC Fiber | 1,000 / 1,000 |
5G (outdoors only) and 4G LTE
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