Adams County property record for 4440 E 121st Pl, Thornton, CO 80241 · Last verified February 2026
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 2 ba · 1,143 sqft · built 1983 |
| Lot Size | 0.189 acres (8,276 sqft) |
| Owner | 2 Individual Names on File |
| Tax Bill | $831 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | R0011649 |
| Primary APN | R0011649 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2 Baths |
| Plumbing Fixtures | 9 Plumbing Fixtures |
| Total Rooms | 6 Rooms |
| Stories | 2 Stories |
| Building Area | 1,143 sqft Living Area |
| 1st Floor Area | 535 sqft |
| 2nd Floor Area | 608 sqft |
| Basement Area | 406 sqft |
| Interior Walls | Wallboard/Drywall |
| Fireplace | Fireplace |
| Year Built | Built 1983 |
|---|---|
| Architectural Style | Split Level |
| Exterior Material | Aluminum/Vinyl |
| Construction Type | Frame |
| Roof Type | Gable |
| Roof Material | Composition Shingle |
| Lot Area | 8,276 sqft (0.189 acres) |
| Lot Dimensions | 100 ft deep x 81 ft wide |
| Garage Type | Attached |
| Garage Area | 477 sqft |
| Parking Spaces | 2 Parking Spaces |
| Cooling System | Central |
|---|---|
| Heating System | Forced Air |
| Account Number | R0011649 |
|---|---|
| Old Parcel Number | 157131313001 |
| Street Address | 4440 E 121ST PL |
| City | THORNTON |
| State | CO |
| Zip | 80241-3632 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | SUB:NORTHAVEN BLK:11 LOT:6 |
| Legal Range | 67W |
| Legal Township | 01S |
| Legal Section | 31 |
| Legal Quarter | NE |
| Legal Subdivision | NORTHAVEN |
| Legal Block | 11 |
| Legal Lot Number | 6 |
| Jurisdiction | ADAMS CO |
| Township / Civil Division | WEST ADAMS |
| Census Block Group | 2 |
| Census Block | 2013 |
| Census Tract | 8547 |
Source: Adams County records · APN R0011649
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 |
|---|---|
| Mailing Address | 4440 E 121ST PL, DENVER, CO 80241-3632 |
| 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 | Adams 12 Five Star Schools (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 | $831.00 (-75.41%) | $19,620 (-36.69%) Land $4,550 Building $15,070 | $414,000 (-9.61%) Land $96,000 Building $318,000 |
| 2023 | $3,380.00 (+6.09%) | $30,990 (+7.12%) Land $5,820 Building $25,170 | $458,000 (+10.05%) Land $86,000 Building $372,000 |
| 2022 | $3,186.00 | $28,930 Land $11,960 Building $16,970 | $416,169 Land $172,000 Building $244,169 |
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 | Not rated no burnable land in reach |
|---|---|
| Wildfire Likelihood | Negligible |
| Exposure | None beyond ember reach |
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 719 locations within about half a mile of this property
| Provider | Technology | Download / Upload (Mbps) |
|---|---|---|
| Xfinity | Cable | 2,000 / 250 |
| JAB Wireless | Fixed Wireless (unlicensed) | 500 / 100 |
| Verizon | Fixed Wireless | 300 / 20 |
| Lumen Technologies | DSL | 140 / 20 |
May also be available at this address: T-Mobile USA, AT&T, Lumen Technologies. Availability varies by address; speeds are provider-advertised maximums, not measured.
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