Lewis And Clark County property record for 820 Onyx Pl, Helena, MT 59602
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 2 ba · 1,822 sqft · built 2001 |
| Lot Size | 0.283 acres (12,327 sqft) |
| Owner | 2 Individual Names on File |
| Tax Bill | $2,869 (2026) |
| Deeds & Mortgages | Apr 2023 Transfer |
| Flood Zone | Zone X (minimal risk) |
| APN | R0533162 |
| Primary APN | R0533162 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2 Baths |
| Plumbing Fixtures | 9 Plumbing Fixtures |
| Total Rooms | 7 Rooms |
| Stories | 1 Story |
| Building Area | 1,822 sqft Living Area |
| 1st Floor Area | 1,822 sqft |
| Basement Area | 1,700 sqft |
| Finished Basement | 1,700 sqft |
| Year Built | Built 2001 |
|---|---|
| Effective Year Built | Effective 2001 |
| Architectural Style | Ranch |
| Exterior Material | Wood |
| Construction Type | Frame |
| Roof Type | Gable |
| Roof Material | Asphalt |
| Lot Area | 12,327 sqft (0.283 acres) |
| Terrain | Wooded |
| Garage Area | 782 sqft |
| Parking Spaces | 3 Parking Spaces |
| Porch | Slab |
|---|---|
| Porch Area | 36 sqft |
| Deck Area | 642 sqft |
| Gazebo | 80 sqft |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Heating Fuel | Gas |
| Sewer | Septic |
| Water Source | Well |
| Account Number | 0000035551 |
|---|---|
| Street Address | 820 ONYX PL |
| City | HELENA |
| State | MT |
| Zip | 59602-7464 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | GOLDEN ESTATES II, S18, T10 N, R03 W, BLOCK 2, COS #587305 BLOCK 2-4 |
| Legal Range | 03W |
| Legal Township | 10N |
| Legal Section | 18 |
| Legal Subdivision | GOLDEN ESTATES II |
| Legal Block | 2 |
| Legal Lot Number | 2-4 |
| Jurisdiction | LEWIS AND CLARK MT |
| Township / Civil Division | HELENA |
| Census Block Group | 1 |
| Census Block | 1010 |
| Census Tract | 503 |
820 Onyx Pl is owned and occupied by two individuals who acquired it in April 2023.
Source: Lewis And Clark County records, as of September 11, 2026
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 820 ONYX PL, HELENA, MT 59602-7464 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Et Al (and Others) |
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 | 2 Names on Deed |
|---|---|
| Last Sale | Apr 17, 2023 |
| Deed Sale | Apr 17, 2023 |
| Deed Document Number | 20233410235 |
| Deed Book / Page | 62 / 644 |
| Prior Transfer Date | Apr 6, 2023 |
| Prior Transfer Doc | 000M62/644 |
| Record Updated | Oct 29, 2026 |
| Document Type | Intrafamily Transfer |
|---|---|
| Jurisdiction | LEWIS AND CLARK MT |
| Recording Date | Apr 17, 2023 |
| Property Address | 820 ONYX PL, HELENA, MT 59602-7464 |
| Document Number | 000M62/644 |
| Book / Page | M62 / 644 |
| Map Reference | DOC 587305/S |
| Instrument Date | Apr 6, 2023 |
| Instrument | 3410235 |
| Transaction Type | Transfer |
| Record Updated | May 3, 2023 |
| Tax | $0.00 |
|---|---|
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Revocable Trust |
| Address | 820 ONYX PL, HELENA, MT 59602-7464 |
The 2026 property tax bill for 820 Onyx Pl was $2,869, up 5.7% from the year before.
Source: Lewis And Clark County assessment roll, as of September 11, 2026
| Type | Name |
|---|---|
| State | Montana |
| County | Lewis And Clark County |
| Elementary School District | Helena Elementary School District (PK - 08) |
| Secondary School District | Helena High School District (09 - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $2,869.00 (+5.71%) | $537,600 (-) | |
| 2025 | $2,714.00 | $537,600 | $537,600 Land $86,025 Building $451,575 |
| 2023 | $4,262.00 | $454,300 | $454,300 Land $107,361 Building $346,939 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 820 Onyx Pl in Zone X, an area of minimal flood risk, though there have been 4 flood claims nearby since 2011.
Source: FEMA National Flood Hazard Layer, effective April 7, 2024 · 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 8 (10% premium discount) |
| Nearby Flood Policies | 9 in force |
| Nearby Flood Claims | 4 (2011–2018) |
| Claims Outside the SFHA | 3 of 4 |
| Most Recent Claim | May 2018 · Flooding |
| Claims by Event |
|
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.
Wildfire risk around 820 Onyx Pl 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 93% of Montana |
|---|---|
| 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 | GOLDEN ESTATES HOMEOWNERS ASSOCIATION private · serves 400 people · EPA ID MT0004187 |
|---|---|
| Water Source | Groundwater |
| Last State Inspection | Feb 2025 |
| Lead | 5 ppb (2023–2025) action level 15 ppb |
| Water Quality | None last 10 years |
|---|---|
| Treatment and Procedure | None last 10 years |
| Monitoring and Reporting | 1 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. The service area is an EPA estimate; the actual supplier may differ.
Source: FCC Broadband Data Collection, based on 223 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| TDS Telecom Fiber | 8,000 / 8,000 |
| Spectrum Cable | 1,000 / 1,000 |
| Verizon Fixed Wireless | 300 / 20 |
May also be available: Montana Internet, T-Mobile.
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