Adams County property record for 3601 E 99th Way, Thornton, CO 80229 · Last verified February 2026
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 2 ba · 1,732 sqft · built 1986 |
| Lot Size | 0.169 acres (7,405 sqft) |
| Owner | 2 Individual Names on File |
| Tax Bill | $975 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | R0040390 |
| Primary APN | R0040390 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2 Baths |
| Plumbing Fixtures | 8 Plumbing Fixtures |
| Total Rooms | 7 Rooms |
| Stories | 2 Stories |
| Building Area | 1,732 sqft Living Area |
| 1st Floor Area | 1,084 sqft |
| 2nd Floor Area | 648 sqft |
| Basement Area | 600 sqft |
| Interior Walls | Wallboard/Drywall |
| Fireplace | Fireplace |
| Year Built | Built 1986 |
|---|---|
| Effective Year Built | Effective 2004 |
| Architectural Style | Other |
| Exterior Material | Aluminum/Vinyl |
| Construction Type | Frame |
| Roof Type | Gable |
| Roof Material | Composition Shingle |
| Lot Area | 7,405 sqft (0.169 acres) |
| Lot Dimensions | 100 ft deep x 76 ft wide |
| Garage Type | Attached |
| Garage Area | 399 sqft |
| Parking Spaces | 1 Parking Space |
| Porch | Porch |
| Porch Area | 289 sqft |
| Cooling System | Central |
|---|---|
| Heating System | Forced Air |
| Account Number | R0040390 |
|---|---|
| Old Parcel Number | 171913409005 |
| Street Address | 3601 E 99TH WAY |
| City | THORNTON |
| State | CO |
| Zip | 80229-2851 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | SUB:NORTH HILLS FILING NUMBER ONE SUBD BLK:5 LOT:22 |
| Legal Range | 68W |
| Legal Township | 02S |
| Legal Section | 13 |
| Legal Quarter | SW |
| Legal Subdivision | NORTH HILLS FILING NUMBER ONE SUBD |
| Legal Block | 5 |
| Legal Lot Number | 22 |
| Jurisdiction | ADAMS CO |
| Township / Civil Division | WEST ADAMS |
| Census Block Group | 1 |
| Census Block | 1007 |
| Census Tract | 9207 |
Source: Adams County records · APN R0040390
Assessment roll updated August 25, 2025 · Last verified February 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | 2 Individual Names on File |
|---|---|
| Co-owner | Verified Secondary Owner |
| Mailing Address | 3601 E 99TH WAY, THORNTON, CO 80229-2851 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Deed Names | 2 Verified Names on Deed |
|---|---|
| Record Updated | Jun 08, 2026 |
Source: Adams County records · Assessment roll updated August 25, 2025 · Last verified February 2026
| Type | Name |
|---|---|
| State | Colorado |
| County | Adams County |
| Municipality | Thornton City |
| Unified School District | Mapleton School District 1 (PK - 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 |
|---|---|---|---|
| 2025 | $975.00 (-72.14%) | $23,000 (-35.12%) Land $4,420 Building $18,580 | $468,000 (-10.69%) Land $90,000 Building $378,000 |
| 2023 | $3,500.00 (+11.61%) | $35,450 (+12.65%) Land $5,750 Building $29,700 | $524,000 (+15.75%) Land $85,000 Building $439,000 |
| 2022 | $3,136.00 | $31,470 Land $11,820 Building $19,650 | $452,709 Land $170,000 Building $282,709 |
Source: FEMA National Flood Hazard Layer, Adams County (08001C), updated October 2, 2026 · USDA Forest Service Wildfire Risk to Communities, 2nd edition (2024), fuels as of 2020 · Last verified October 2026
| FEMA Flood Zone | Zone X |
|---|---|
| Special Flood Hazard Area | No |
| Flood Hazard | Minimal |
| 500-Year Floodplain | No |
| Wildfire Risk | Low above 1% of the US · less than 1% of Colorado |
|---|---|
| Wildfire Likelihood | Less than 1 in 10,000 per year |
| Exposure | Direct burnable vegetation at the parcel |
Values are read at the parcel center point; lenders make the official flood determination.
Source: FCC Broadband Data Collection, availability as of December 31, 2025 · Published October 2026 · based on 631 locations within about half a mile of this property
| Provider | Technology | Download / Upload (Mbps) |
|---|---|---|
| Xfinity | Cable | 2,000 / 250 |
| Verizon | Fixed Wireless | 300 / 20 |
| Lumen Technologies | DSL | 140 / 20 |
| JAB Wireless | Fixed Wireless (unlicensed) | 100 / 20 |
| T-Mobile USA | Fixed Wireless | 100 / 20 |
May also be available at this address: Aerux. Availability varies by address; speeds are provider-advertised maximums, not measured.
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