Adams County property record for 4521 E 121st Pl, Thornton, CO 80241
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 2.5 ba · 2,746 sqft · built 1980 |
| Lot Size | 0.191 acres (8,325 sqft) |
| Owner | Individual Name on File |
| Tax Bill | $1,256 (2025) |
| Deeds & Mortgages | Oct 2020 Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 1571-31-3-18-003 |
| Primary APN | 1571-31-3-18-003 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 2.5 Baths |
| Half Baths | 1 Half Bath |
| Plumbing Fixtures | 11 Plumbing Fixtures |
| Total Rooms | 7 Rooms |
| Stories | 2 Stories |
| Building Area | 2,746 sqft Living Area |
| Gross Area | 3,320 sqft |
| 1st Floor Area | 1,144 sqft |
| 2nd Floor Area | 572 sqft |
| Basement Area | 1,144 sqft |
| Finished Basement | 1,030 sqft |
| Unfinished Basement | 114 sqft |
| Interior Walls | Wallboard/Drywall |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1980 |
|---|---|
| Effective Year Built | Effective 1980 |
| Exterior Material | Aluminum/Vinyl |
| Construction Type | Frame |
| Roof Type | Gable |
| Roof Material | Composition Shingle |
| Lot Area | 8,325 sqft (0.191 acres) |
| Lot Dimensions | 111 ft deep x 75 ft wide |
| View / Lot | Open Space |
| Garage Type | Attached |
| Garage Area | 460 sqft |
| Parking Spaces | 2 Parking Spaces |
| Porch | Porch |
| Porch Area | 104 sqft |
| Cooling System | Central |
|---|---|
| Heating System | Forced Air with A/C |
| Account Number | R0011680 |
|---|---|
| Street Address | 4521 E 121ST PL |
| City | THORNTON |
| State | CO |
| Zip | 80241-3631 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | SUB:NORTHAVEN BLK:5 LOT:4 |
| Legal Range | 67W |
| Legal Township | 01S |
| Legal Section | 31 |
| Legal Quarter | 3 |
| Legal Subdivision | NORTHAVEN |
| Legal Block | 5 |
| Legal Lot Number | 4 |
| Jurisdiction | ADAMS CO |
| Township / Civil Division | WEST ADAMS |
| Census Block Group | 2 |
| Census Block | 2005 |
| Census Tract | 8547 |
Source: Adams County assessment roll, as of January 21, 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | Individual Name on File |
|---|---|
| Mailing Address | 4521 E 121ST PL, THORNTON, CO 80241-3631 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Deed Names | Verified Name on Deed |
|---|---|
| Last Sale | Oct 26, 2016 |
| Deed Sale | Oct 26, 2016 |
| Prior Sale | Dec 2, 2015 |
| Deed Document Number | 201691754 |
| Prior Transfer Date | Oct 17, 2016 |
| Prior Transfer Doc | 0000091754 |
| Record Updated | Sep 20, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | ADAMS CO |
| Property Address | 4521 E 121ST PL, THORNTON, CO 80241-3631 |
| Transaction Type | Mortgage |
| Record Updated | Jun 21, 2022 |
| Name | Verified Name |
|---|
| Document Number | 0000102083 |
|---|---|
| Date | Oct 7, 2020 |
| Instrument | 2020000102083 |
| Name | FREEDOM MORTGAGE CORP |
|---|---|
| Type | Subprime Lender |
| Address | MOUNT LAUREL, NJ 08054 |
| Type | FHA Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 314 Months |
| Due | Dec 1, 2046 |
Source: Adams County assessment roll, as of January 21, 2026
| Type | Name |
|---|---|
| State | Colorado |
| County | Adams County |
| Municipality | Thornton City |
| Unified School District | Adams 12 Five Star Schools (PK - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2025 | $1,256.00 (-62.47%) | $32,230 (-10.62%) Land $6,530 Building $25,700 | $474,000 (-11.07%) Land $96,000 Building $378,000 |
| 2024 | $3,347.00 (-14.92%) | ||
| 2023 | $3,934.00 (+10.04%) | $36,060 (+11.09%) Land $5,820 Building $30,240 | $533,000 (+14.16%) Land $86,000 Building $447,000 |
| 2022 | $3,575.00 | $32,460 Land $11,960 Building $20,500 | $466,904 Land $172,000 Building $294,904 |
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.
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.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Not rated no burnable land within ember reach |
|---|
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 820 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Lumen Technologies Fiber · DSL in parts of the area | 8,000 / 8,000 |
| Xfinity Cable | 2,000 / 250 |
| JAB Wireless Fixed Wireless | 300 / 60 |
| Verizon Fixed Wireless | 300 / 20 |
May also be available: AT&T, BIF IV Intrepid HoldCo, T-Mobile USA, Ting Fiber.
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