Pennington County property record for 421 Topaz Ln, Rapid City, SD 57701
| Property Type | Duplex |
|---|---|
| Details | 4 bd · 4 ba · 2,584 sqft · built 2011 |
| Lot Size | 0.25 acres (10,890 sqft) |
| Owner | Company Name on File |
| Last Sale | $600,000 (Oct 2024) |
| Tax Bill | $6,619 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 38-19-104-004 |
| Primary APN | 38-19-104-004 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 4 Baths |
| Building Area | 2,584 sqft Total Area |
| Basement Area | 1,248 sqft |
| Finished Basement | 315 sqft |
| Year Built | Built 2011 |
|---|---|
| Effective Year Built | Effective 2011 |
| Architectural Style | Ranch |
| Lot Area | 10,890 sqft (0.25 acres) |
| Garage Area | 1,452 sqft |
| Porch | Slab |
| Porch Area | 358 sqft |
| Patio Area | 168 sqft |
| Account Number | 61538 |
|---|---|
| Street Address | 421 TOPAZ LN |
| City | RAPID CITY |
| State | SD |
| Zip | 57701-6327 |
| Property Category | Residential |
| Property Type | Residential > Multi-Unit > Duplex |
| Legal Description | GEMSTONE SUBD, BLOCK 2, LOT 4 |
| Legal Subdivision | GEMSTONE SUBD |
| Legal Block | 2 |
| Legal Lot Number | 4 |
| Jurisdiction | PENNINGTON SD |
| Township / Civil Division | RAPID CITY |
| Census Block Group | 1 |
| Census Block | 1005 |
| Census Tract | 10905 |
Source: Pennington County records · APN 38-19-104-004
Assessment roll updated August 26, 2025 · Last verified May 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | Company Name on File |
|---|---|
| Mailing Address | 13905 W WAINWRIGHT DR, BOISE, ID 83713-1969 |
| Owner Type | Company |
| Vesting | Company |
| Deed Names | Verified Name on Deed |
|---|---|
| Last Sale | Oct 24, 2024 · Amount on Record |
| Deed Sale | Oct 24, 2024 · Amount on Record |
| Deed Document Number | 2024 |
| Record Updated | Jun 08, 2026 |
Source: Pennington County records · Assessment roll updated August 26, 2025 · Last verified May 2026
| Type | Name |
|---|---|
| State | South Dakota |
| County | Pennington County |
| Municipality | Rapid City |
| Unified School District | Rapid City School District 51-4 (PK - 12) |
Assessed value is set for property tax purposes and is not a market price estimate.
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2025 | $6,619.00 (-6.23%) | $495,500 (-0.76%) Land $67,400 Building $428,100 |
| 2023 | $7,059.00 (+13.23%) | $499,300 Land $67,400 Building $431,900 |
| 2022 | $6,234.00 |
Source: FEMA National Flood Hazard Layer, Pennington County (46103C), updated June 11, 2026 · FEMA OpenFEMA NFIP redacted claims and policies, census block group 461030109051, refreshed September 2026 · USDA Forest Service Wildfire Risk to Communities, 2nd edition (2024), fuels as of 2020 · Last verified October 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
| Community Rating System | Class 7 (15% premium discount) |
| Nearby Flood Policies | 1 in force |
| Nearby Flood Claims | 2 (2013–2019) |
| Claims Outside the SFHA | 2 of 2 |
| Most Recent Claim | May 2019 · Severe Storms And Flooding |
| Wildfire Risk | Low lower than 80% of the US · lower than 85% of South Dakota |
|---|---|
| Wildfire Likelihood | 0.02% annual chance |
| Exposure | Indirect within ember reach |
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: FCC Broadband Data Collection, availability as of December 31, 2025 · sampled at 210 locations within half a mile · Last verified October 2026
| Provider | Max Down / Up (Mbps) |
|---|---|
| Midcontinent Communications Cable | 2,000 / 1,000 |
| Clarity Telecom Cable · Fiber in parts of the area | 1,000 / 30 |
May also be available: Lumen Technologies, Verizon.
Source: EPA Safe Drinking Water Information System via ECHO, 2026 Q3 · EPA community water system boundaries v3.0, March 2026 · Last verified October 2026
| Water System | RAPID CITY serves 72,009 people |
|---|---|
| Water Source | Surface water |
| Last State Inspection | May 2024 |
| Lead | 6 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 as reported to EPA, not water tested at this address; lead at the tap also depends on the building's own pipes. The full violation and enforcement history is in the system's EPA record.
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