Pennington County property record for 509 E Philadelphia St, Rapid City, SD 57701
| Property Type | Single Family Home |
|---|---|
| Details | 2 bd · 1 ba · 1,008 sqft · built 1920 |
| Lot Size | 0.27 acres (11,761 sqft) |
| Owner | Trust Name on File |
| Tax Bill | $685 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 21-31-380-015 |
| Primary APN | 21-31-380-015 |
|---|---|
| Alternative APN |
|
| Bedrooms | 2 Beds |
|---|---|
| Full Baths | 1 Bath |
| Building Area | 1,008 sqft Living Area |
| Year Built | Built 1920 |
|---|---|
| Effective Year Built | Effective 1920 |
| Architectural Style | Bungalow |
| Lot Area | 11,761 sqft (0.27 acres) |
| Deck Area | 100 sqft |
| Account Number | 54670 |
|---|---|
| Street Address | 509 E PHILADELPHIA ST |
| City | RAPID CITY |
| State | SD |
| Zip | 57701-1649 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | BLAKES ADD, LOT 10 - 13 |
| Legal Subdivision | BLAKES ADD |
| Legal Lot Number | 10-13 |
| Jurisdiction | PENNINGTON SD |
| Township / Civil Division | RAPID CITY |
| Census Block Group | 3 |
| Census Block | 3000 |
| Census Tract | 10500 |
509 E Philadelphia St is owner-occupied and held in a trust.
Source: Pennington County records, as of September 14, 2026
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Owner of Record | Trust Name on File |
|---|---|
| Mailing Address | 509 E PHILADELPHIA ST, RAPID CITY, SD 57701-1649 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | Trust |
| Deed Names | Name on Deed |
|---|---|
| Record Updated | Oct 29, 2026 |
The 2025 property tax bill for 509 E Philadelphia St was $685.
Source: Pennington County assessment roll, as of September 14, 2026
| Type | Name |
|---|---|
| State | South Dakota |
| County | Pennington County |
| Municipality | Rapid City |
| Unified School District | Rapid City School District 51-4 (PK - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $185,600 (-) Land $45,600 Building $140,000 | |
| 2025 | $685.00 | $185,600 Land $45,600 Building $140,000 |
| 2023 | $741.00 (-10.51%) | $201,400 Land $35,000 Building $166,400 |
| 2022 | $828.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 509 E Philadelphia St in Zone X, an area of minimal flood risk.
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 |
| Community Rating System | Class 7 (15% premium discount) |
| Nearby Flood Policies | 7 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.
The area around 509 E Philadelphia St has no burnable land within ember reach, so its wildfire risk is not rated.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Not rated no burnable land within ember reach |
|---|
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 | RAPID CITY serves 72,009 people · EPA ID SD4600406 |
|---|---|
| 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, 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 464 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Midco Cable | 2,000 / 350 |
| Bluepeak Cable · Fiber in parts of the area | 1,000 / 30 |
May also be available: AT&T, T-Mobile, Verizon.
Search by:
By searching, you agree to: Terms • Privacy • Disclosures