Adams County property record for 4510 E 121st Pl, Thornton, CO 80241
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 3 ba · 1,695 sqft · built 1980 |
| Lot Size | 0.23 acres (10,019 sqft) |
| Owner | Individual Name on Record |
| Last Sale | $541,500 (Jun 2025) |
| Tax Bill | $1,028 (2025) |
| Deeds & Mortgages | Nov 2019 Transfer |
| Flood Zone | Zone X (minimal risk) |
| APN | R0011688 |
| Primary APN | R0011688 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 3 Baths |
| Plumbing Fixtures | 14 Plumbing Fixtures |
| Total Rooms | 6 Rooms |
| Stories | 2 Stories |
| Building Area | 1,695 sqft Living Area |
| 1st Floor Area | 1,019 sqft |
| 2nd Floor Area | 676 sqft |
| Basement Area | 576 sqft |
| Interior Walls | Wallboard/Drywall |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1980 |
|---|---|
| Architectural Style | Split Level |
| Exterior Material | Aluminum/Vinyl |
| Construction Type | Frame |
| Roof Type | Gable |
| Roof Material | Composition Shingle |
| Lot Area | 10,019 sqft (0.23 acres) |
| Lot Dimensions | 117 ft deep x 84 ft wide |
| Garage Type | Attached |
| Garage Area | 441 sqft |
| Parking Spaces | 2 Parking Spaces |
| Porch | Porch |
|---|---|
| Porch Area | 300 sqft |
| Deck Area | 403 sqft |
| Patio Area | 403 sqft |
| Cooling System | Central |
|---|---|
| Heating System | Forced Air |
| Account Number | R0011688 |
|---|---|
| Old Parcel Number | 157131319001 |
| Street Address | 4510 E 121ST PL |
| City | THORNTON |
| State | CO |
| Zip | 80241-3631 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | SUB:NORTHAVEN BLK:4 LOT:7 |
| Legal Range | 67W |
| Legal Township | 01S |
| Legal Section | 31 |
| Legal Quarter | NE |
| Legal Subdivision | NORTHAVEN |
| Legal Block | 4 |
| Legal Lot Number | 7 |
| Jurisdiction | ADAMS CO |
| Township / Civil Division | WEST ADAMS |
| Census Block Group | 2 |
| Census Block | 2005 |
| Census Tract | 8547 |
Source: Adams County records, as of February 9, 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 Record |
|---|---|
| Mailing Address | 4510 E 121ST PL, THORNTON, CO 80241-3631 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Jun 4, 2025 · Amount on Record |
| Deed Sale | Jun 4, 2025 · Amount on Record |
| Prior Sale | Nov 7, 2019 |
| Deed Document Number | 2025000032263 |
| Record Updated | Jun 8, 2026 |
| Document Type | Quit Claim Deed |
|---|---|
| Jurisdiction | ADAMS CO |
| Recording Date | Nov 7, 2019 |
| Property Address | 4510 E 121ST PL, THORNTON, CO 80241-3631 |
| Document Number | 0000096706 |
| Instrument Date | Nov 6, 2019 |
| Instrument | 96706 |
| Transaction Type | Transfer |
| Record Updated | Nov 18, 2019 |
| Title Company | ATTORNEY ONLY |
| Tax | $0.00 |
|---|---|
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Personal Trust |
| Address | 4510 E 121ST PL THORNTON CO 802413631, THORNTON, CO 80241-3631 |
Source: Adams County assessment roll, as of August 25, 2025
| 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 | $1,028.00 (-74.34%) | $24,250 (-34%) Land $4,770 Building $19,480 | $488,000 (-10.13%) Land $96,000 Building $392,000 |
| 2023 | $4,007.00 (+13.06%) | $36,740 (+14.17%) Land $5,820 Building $30,920 | $543,000 (+17.31%) Land $86,000 Building $457,000 |
| 2022 | $3,544.00 | $32,180 Land $11,960 Building $20,220 | $462,868 Land $172,000 Building $290,868 |
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 |
|---|
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 820 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| CenturyLink Fiber · DSL in parts of the area | 8,000 / 8,000 |
| Xfinity Cable | 2,000 / 250 |
| Rise Broadband Fixed Wireless | 300 / 60 |
| Verizon Fixed Wireless | 300 / 20 |
May also be available: AT&T, Intrepid Fiber Networks, T-Mobile, Ting.
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