Adams County property record for 9951 Harrison St, Thornton, CO 80229
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 2 ba · 1,454 sqft · built 1992 |
| Lot Size | 0.18 acres (7,841 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $88,700 (Sep 1991) |
| Tax Bill | $901 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | R0040377 |
| Primary APN | R0040377 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2 Baths |
| Plumbing Fixtures | 9 Plumbing Fixtures |
| Total Rooms | 6 Rooms |
| Stories | 2 Stories |
| Building Area | 1,454 sqft Living Area |
| 1st Floor Area | 762 sqft |
| 2nd Floor Area | 692 sqft |
| Interior Walls | Wallboard/Drywall |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1992 |
|---|---|
| Architectural Style | Split Level |
| Exterior Material | Aluminum/Vinyl |
| Construction Type | Frame |
| Roof Type | Gable |
| Roof Material | Composition Shingle |
| Lot Area | 7,841 sqft (0.18 acres) |
| Lot Dimensions | 97 ft deep x 81 ft wide |
| Garage Type | Attached |
| Garage Area | 420 sqft |
| Parking Spaces | 2 Parking Spaces |
| Cooling System | Central |
|---|---|
| Heating System | Forced Air |
| Account Number | R0040377 |
|---|---|
| Old Parcel Number | 171913408012 |
| Street Address | 9951 HARRISON ST |
| City | THORNTON |
| State | CO |
| Zip | 80229-2867 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | SUB:NORTH HILLS FILING NUMBER ONE SUBD BLK:4 LOT:10 |
| Legal Range | 68W |
| Legal Township | 02S |
| Legal Section | 13 |
| Legal Quarter | SW |
| Legal Subdivision | NORTH HILLS FILING NUMBER ONE SUBD |
| Legal Block | 4 |
| Legal Lot Number | 10 |
| Jurisdiction | ADAMS CO |
| Township / Civil Division | WEST ADAMS |
| Census Block Group | 1 |
| Census Block | 1003 |
| Census Tract | 9207 |
9951 Harrison St is owned and occupied by two individuals who bought it in September 1991.
Source: Adams County records, as of February 9, 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 | 2 Individual Names on File |
|---|---|
| Mailing Address | 9951 HARRISON ST, THORNTON, CO 80229-2867 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Sep 6, 1991 · Amount on File |
| Deed Sale | Sep 6, 1991 · Amount on File |
| Deed Document Number | 2041 |
| Record Updated | Jun 8, 2026 |
The 2025 property tax bill for 9951 Harrison St was $901.
Source: Adams County assessment roll, as of August 25, 2025
| 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 | $901.00 | $21,250 Land $4,350 Building $16,900 | $440,000 Land $90,000 Building $350,000 |
| 2023 | $3,273.00 (+8.85%) | $33,150 (+9.88%) Land $5,750 Building $27,400 | $490,000 (+12.88%) Land $85,000 Building $405,000 |
| 2022 | $3,007.00 | $30,170 Land $11,820 Building $18,350 | $434,083 Land $170,000 Building $264,083 |
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 9951 Harrison 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.
Wildfire risk around 9951 Harrison St is low, with less than 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 98% of the US · lower than 99.2% of Colorado |
|---|---|
| Wildfire Likelihood | Under 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 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 791 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Cable | 2,000 / 250 |
| Verizon Fixed Wireless | 300 / 20 |
| CenturyLink DSL · Fiber in parts of the area | 140 / 20 |
| Rise Broadband Fixed Wireless | 100 / 20 |
| AT&T Fixed Wireless | 100 / 20 |
May also be available: Aerux Broadband, T-Mobile.
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