Fremont County property record for 420 E Washington Ave, Riverton, WY 82501
| Property Type | Commercial Office |
|---|---|
| Details | 3,180 sqft · built 1975 |
| Lot Size | 0.119 acres (5,180 sqft) |
| Owner | Trust Name on File |
| Tax Bill | $2,401 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 9114-34-1-20-010.00 |
| Primary APN | 9114-34-1-20-010.00 |
|---|---|
| Alternative APNs |
|
| Stories | 1 Story |
|---|---|
| Building Area | 3,180 sqft Gross Area |
| Basement Area | 1,530 sqft |
| Finished Basement | 1,310 sqft |
| Unfinished Basement | 220 sqft |
| Elevator | Elevator |
| Year Built | Built 1975 |
|---|---|
| Effective Year Built | Effective 1975 |
| Construction Type | Masonry / Concrete Block |
| Fire Resistance | Masonry Walls, Wood Interior |
| Roof Type | Gable |
| Lot Area | 5,180 sqft (0.119 acres) |
| Cooling System | A/C Chilled Water |
|---|---|
| Heating System | Hot Water |
| Account Number | R0021144 |
|---|---|
| Street Address | 420 E WASHINGTON AVE |
| City | RIVERTON |
| State | WY |
| Zip | 82501-4447 |
| Property Category | Commercial |
| Property Type | Commercial > Office > Commercial Office |
| Legal Description | ORIGINAL TOWN OF RIVERTON: BLOCK 18 S LOTS 21 & 22 AND W 24 OF S OF LOT 23 WD 2024-1460193 |
| Legal Subdivision | ORIGINAL TOWN OF RIVERTON |
| Legal Block | 18 |
| Legal Lot Number | 21-23 |
| Jurisdiction | FREMONT WY |
| Township / Civil Division | WIND RIVER RESERVATION |
| Census Block Group | 3 |
| Census Block | 3018 |
| Census Tract | 940500 |
420 E Washington Ave, a commercial property, is held in a trust.
Source: Fremont County records, as of July 2, 2026
| Owner of Record | Trust Name on File |
|---|---|
| Mailing Address | 10868 HIGHWAY 789, RIVERTON, WY 82501 |
| Owner Type | Company |
| Vesting | Trust, Family Revocable Trust |
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 |
|---|---|
| Record Updated | Sep 20, 2026 |
The 2025 property tax bill for 420 E Washington Ave was $2,401.
Source: Fremont County assessment roll, as of July 2, 2026
| Type | Name |
|---|---|
| State | Wyoming |
| County | Fremont County |
| Municipality | Riverton City |
| Unified School District | Fremont County School District 25 (KG - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $29,959 Land $1,230 Building $28,729 | $315,362 Land $12,950 Building $302,412 | |
| 2025 | $2,401.00 | ||
| 2023 | $20,510 Land $1,230 Building $19,280 | $215,901 Land $12,950 Building $202,951 | |
| 2022 | $1,603.00 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 420 E Washington Ave in Zone X, an area of minimal flood risk.
Source: FEMA National Flood Hazard Layer, effective August 1, 2024
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
Values are read at the parcel center point; lenders make the official flood determination.
Wildfire risk around 420 E Washington Ave is low, with a 0.01% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 80% of the US · lower than 94% of Wyoming |
|---|---|
| Wildfire Likelihood | 0.01% annual chance |
| Exposure | None beyond 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 | CITY OF RIVERTON serves 10,330 people · EPA ID WY5600047 |
|---|---|
| Water Source | Surface water |
| Last State Inspection | May 2024 |
| Lead | 3 ppb (2024–2026) action level 15 ppb |
| Water Quality | Treatment failure resolved · May 2021 |
|---|---|
| Treatment and Procedure | Sanitary survey deficiency not corrected Jun 2023 |
| Monitoring and Reporting | 3 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 431 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Spectrum Cable · Fiber in parts of the area | 1,000 / 1,000 |
| Wind River Internet Fixed Wireless · Fiber in parts of the area | 200 / 200 |
| Wyoming.com Fixed Wireless · Fiber in parts of the area | 200 / 100 |
| Visionary Broadband Fixed Wireless | 100 / 20 |
May also be available: T-Mobile, Verizon.
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