Natrona County property record for 521 E 12th St, Casper, WY 82601
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 2 ba · 1,084 sqft · built 1920 |
| Lot Size | 0.161 acres (7,000 sqft) |
| Owner | Company Name on File |
| Tax Bill | $1,436 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 3379-09-42-9-00400 |
| Primary APN | 3379-09-42-9-00400 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 4 Rooms |
| Stories | 1 Story |
| Building Area | 1,084 sqft Living Area |
| Basement Area | 696 sqft |
| Finished Basement | 696 sqft |
| Interior Walls | Wallboard/Drywall |
| Year Built | Built 1920 |
|---|---|
| Effective Year Built | Effective 1986 |
| Architectural Style | Ranch |
| Exterior Material | Aluminum/Vinyl |
| Construction Type | Frame |
| Roof Type | Gable |
| Roof Material | Composition Shingle |
| Lot Area | 7,000 sqft (0.161 acres) |
| Deck Area | 100 sqft |
| Heating System | Hot Water |
|---|
| Account Number | R0015368 |
|---|---|
| Street Address | 521 E 12TH ST |
| City | CASPER |
| State | WY |
| Zip | 82601-3818 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | BUTLER BLK 3 LOT 4 |
| Legal Range | 79W |
| Legal Township | 33N |
| Legal Section | 09 |
| Legal Subdivision | BUTLER |
| Legal Block | 3 |
| Legal Lot Number | 4 |
| Jurisdiction | NATRONA WY |
| Township / Civil Division | CASPER |
| Census Block Group | 1 |
| Census Block | 1022 |
| Census Tract | 602 |
Source: Natrona County records · APN 3379-09-42-9-00400
Assessment roll updated July 7, 2026 · Last verified July 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 | PO BOX 577, CASPER, WY 82602-0577 |
| Owner Type | Company |
| Vesting | Company |
| Deed Names | Verified Name on Deed |
|---|---|
| Record Updated | Sep 20, 2026 |
Source: Natrona County records · Assessment roll updated July 7, 2026 · Last verified July 2026
| Type | Name |
|---|---|
| State | Wyoming |
| County | Natrona County |
| Municipality | Casper City |
| Unified School District | Natrona County School District 1 (KG - 12) |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $19,701 (+38.66%) Land $3,923 Building $15,778 | $259,422 (+10.48%) Land $54,000 Building $205,422 | |
| 2025 | $1,436.00 (+7.49%) | $14,208 (-22.49%) Land $2,829 Building $11,379 | $234,805 (+21.7%) Land $39,710 Building $195,095 |
| 2023 | $18,330 Land $4,303 Building $14,027 | $192,941 Land $45,290 Building $147,651 | |
| 2022 | $1,336.00 |
Source: FEMA National Flood Hazard Layer as of January 2, 2020 · FEMA NFIP claims and policies as of September 2026 · USDA Forest Service Wildfire Risk to Communities as of 2024 · Last verified October 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
| Community Rating System | Class 10 (0% premium discount) |
| Nearby Flood Policies | 3 in force |
| Wildfire Risk | Not rated no burnable land 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 as of December 31, 2025 · Last verified October 2026
| Provider | Max Down / Up (Mbps) |
|---|---|
| Clarity Telecom Fiber | 5,000 / 5,000 |
| Spectrum Cable · Fiber in parts of the area | 1,000 / 1,000 |
| Mountain West Technologies Fixed Wireless · Fiber in parts of the area | 125 / 25 |
| Visionary Communications Fixed Wireless · Fiber in parts of the area | 100 / 20 |
May also be available: AT&T, Verizon.
Based on FCC filings for 403 locations within half a mile of this property.
Source: EPA Safe Drinking Water Information System as of 2026 Q3 · EPA water system boundaries as of March 2026 · Last verified October 2026
| Water System | CITY OF CASPER serves 59,000 people |
|---|---|
| Water Source | Purchased surface water from CENTRAL WY REGIONAL WATER SYSTEM JPB |
| Last State Inspection | Jun 2022 |
| Lead | 1 ppb (2024–2026) 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. This system sells water to local utilities; the supplier billing this address may be one of them. The full violation and enforcement history is in the system's EPA record.
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