Adams County property record for 9431 High St, Thornton, CO 80229
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 1 ba · 1,002 sqft · built 1955 |
| Lot Size | 0.168 acres (7,300 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $149,800 (Feb 2009) |
| Tax Bill | $1,036 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 1719-23-1-09-014 |
| Primary APN | 1719-23-1-09-014 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 1 Bath |
| Plumbing Fixtures | 6 Plumbing Fixtures |
| Total Rooms | 5 Rooms |
| Stories | 1 Story |
| Building Area | 1,002 sqft Living Area |
| Gross Area | 1,202 sqft |
| 1st Floor Area | 1,002 sqft |
| Interior Walls | Wallboard/Drywall |
| Year Built | Built 1955 |
|---|---|
| Effective Year Built | Effective 2008 |
| Architectural Style | Ranch |
| Exterior Material | Aluminum/Vinyl |
| Construction Type | Frame |
| Roof Type | Gable/Hip |
| Roof Material | Composition Shingle |
| Lot Area | 7,300 sqft (0.168 acres) |
| Lot Dimensions | 100 ft deep x 73 ft wide |
| Garage Type | Detached |
| Garage Area | 576 sqft |
| Parking Spaces | 2 Parking Spaces |
| Porch | Enclosed Porch |
| Porch Area | 512 sqft |
| Cooling System | Central |
|---|---|
| Heating System | Forced Air with A/C |
| Account Number | R0051684 |
|---|---|
| Street Address | 9431 HIGH ST |
| City | THORNTON |
| State | CO |
| Zip | 80229-7626 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | SUB:THORNTON BLK:91D LOT:14 |
| Legal Range | 68W |
| Legal Township | 02S |
| Legal Section | 23 |
| Legal Quarter | 1 |
| Legal Subdivision | THORNTON |
| Legal Block | 91D |
| Legal Lot Number | 14 |
| Jurisdiction | ADAMS CO |
| Township / Civil Division | WEST ADAMS |
| Census Block Group | 1 |
| Census Block | 1012 |
| Census Tract | 9202 |
9431 High St is owned and occupied by two individuals who bought it in February 2009.
Source: Adams County records, as of January 21, 2026
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 9431 HIGH ST, THORNTON, CO 80229-7626 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
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 | Feb 26, 2009 · Amount on File |
| Deed Sale | Feb 26, 2009 · Amount on File |
| Prior Sale | Sep 29, 2008 · Amount on File |
| Deed Document Number | 200913722 |
| Prior Transfer Date | Jan 4, 2001 |
| Prior Transfer Doc | 000C750431 |
| Record Updated | Jun 8, 2026 |
The 2025 property tax bill for 9431 High St was $1,036, down 54.1% from the year before.
Source: Adams County assessment roll, as of January 21, 2026
| Type | Name |
|---|---|
| State | Colorado |
| County | Adams County |
| Municipality | Thornton City |
| Unified School District | Mapleton School District 1 (PK - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2025 | $1,036.00 (-54.14%) | $26,590 Land $6,120 Building $20,470 | $391,000 Land $90,000 Building $301,000 |
| 2024 | $2,259.00 (-17.49%) | ||
| 2023 | $2,738.00 (+3.67%) | $27,740 (+4.68%) Land $6,090 Building $21,650 | $410,000 (+7.52%) Land $90,000 Building $320,000 |
| 2022 | $2,641.00 | $26,500 Land $10,560 Building $15,940 | $381,340 Land $152,000 Building $229,340 |
Assessed value and assessed market value are set for property tax purposes, not market price estimates; both are a fraction of this property's market value.
FEMA maps place 9431 High St in Zone X, an area of minimal flood risk.
Source: FEMA National Flood Hazard Layer, effective October 2, 2026
| 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.
The area around 9431 High 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 | CITY OF THORNTON serves 226,465 people · EPA ID CO0101150 |
|---|---|
| Water Source | Surface water |
| Last State Inspection | Jul 2024 |
| Lead | 2 ppb (2025) action level 15 ppb |
| Water Quality | None last 10 years |
|---|---|
| Treatment and Procedure | None last 10 years |
| 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 894 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| CenturyLink Fiber · DSL in parts of the area | 2,000 / 1,000 |
| Xfinity Cable | 2,000 / 250 |
| Verizon Fixed Wireless | 300 / 20 |
May also be available: Aerux Broadband, LiveWireNet, T-Mobile.
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