Adams County property record for 4451 E 121st Ct, Thornton, CO 80241 · Last verified February 2026
| Property Type | Residential > Single Family > Home |
|---|---|
| Bedrooms | 3 Beds |
| Bathrooms | 3 Baths |
| Year Built | Built 1979 |
| Square Footage | 1,979 sqft Living Area |
| Lot Size | 8,712 sqft (0.2 acres) |
| Occupancy | Owner Occupied |
| Last Sale | $546,635 (2024) |
| Tax Bill | $1,298.00 (2025) |
| Primary APN | R0011651 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 3 Baths |
| Plumbing Fixtures | 13 Plumbing Fixtures |
| Total Rooms | 7 Rooms |
| Building Area | 1,979 sqft Living Area |
| 1st Floor | 1,031 sqft 1st Floor |
| 2nd Floor | 948 sqft 2nd Floor |
| Basement Area | 576 sqft Basement |
| Stories | 2 Stories |
| Interior Structure | Wallboard/Drywall Interior Structure |
| Fireplace | Fireplace |
| Fireplaces | 1 Fireplaces |
| Year Built | Built 1979 |
|---|---|
| Architectural Style | Split Level Style |
| Exterior Material | Aluminum/Vinyl Exterior |
| Construction Type | Frame Construction |
| Roof Construction | Gable Roof Construction |
| Roof Material | Composition Shingle Roof |
| Lot Area | 8,712 sqft (0.2 acres) |
| Depth X Width | 117 ft x 75 ft Depth x Width |
| Parking Spaces | 2 Parking Spaces |
| Garage Type | Attached Garage |
| Garage Area | 585 sqft Garage |
| Porch | Porch |
| Porch Area | 242 sqft Porch |
| Cooling System | Central Cooling |
|---|---|
| Heating System | HVAC Heating |
| Account Number | R0011651 |
|---|---|
| Old Parcel Number | 157131313003 |
| Street Address | 4451 E 121ST CT |
| City | THORNTON |
| State | CO |
| Zip | 80241-3650 |
| Property Usage | Residential Property Usage |
| Type | Residential > Single Family > Home |
| Legal Description | SUB:NORTHAVEN BLK:11 LOT:2 |
| Legal Range | 67W |
| Legal Township | 01S |
| Legal Section | 31 |
| Legal Quarter | NE |
| Legal Subdivision | NORTHAVEN |
| Legal Block | 11 |
| Legal Lot Number | 2 |
| Jurisdiction | ADAMS CO |
| Minor Civil Division | WEST ADAMS |
| Census Blockgroup | 2 |
| Census Block | 2013 |
| Census Tract | 8547 |
Source: Adams County records · APN R0011651
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 | Individual Owner on File |
|---|---|
| Mailing Address | 4451 E 121ST CT, THORNTON, CO 80241-3650 |
| Occupancy | Owner Occupied |
| Owner Type | Owner is an Individual, Couple or Unincorporated Entity |
| Deed Names | Verified Name on Deed |
|---|---|
| Known Transactions |
|
| Deed Doc Number | 2024000047771 |
| Record Refreshed | 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, not market price estimates; both are a fraction of this property's market value.
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2025 | $1,298.00 (-68.65%) | $30,630 (-19.29%) Land $6,000 Building $24,630 | $490,000 (-12.66%) Land $96,000 Building $394,000 |
| 2023 | $4,141.00 (+13.23%) | $37,950 (+14.31%) Land $5,820 Building $32,130 | $561,000 (+17.47%) Land $86,000 Building $475,000 |
| 2022 | $3,657.00 | $33,200 Land $11,960 Building $21,240 | $477,550 Land $172,000 Building $305,550 |
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