Adams County property record for 5221 E 123rd Ave, Thornton, CO 80241
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 3 ba · 1,550 sqft · built 1994 |
| Lot Size | 0.16 acres (6,970 sqft) |
| Owner | Individual Name on File |
| Last Sale | $200,000 (Mar 2012) |
| Tax Bill | $1,274 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | R0011834 |
| Primary APN | R0011834 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 3 Baths |
| Plumbing Fixtures | 11 Plumbing Fixtures |
| Total Rooms | 7 Rooms |
| Stories | 2 Stories |
| Building Area | 1,550 sqft Living Area |
| 1st Floor Area | 753 sqft |
| 2nd Floor Area | 797 sqft |
| Basement Area | 415 sqft |
| Interior Walls | Wallboard/Drywall |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1994 |
|---|---|
| Architectural Style | Other |
| Exterior Material | Aluminum/Vinyl |
| Construction Type | Frame |
| Roof Type | Gable |
| Roof Material | Composition Shingle |
| Lot Area | 6,970 sqft (0.16 acres) |
| Lot Dimensions | 140 ft deep x 50 ft wide |
| Garage Type | Attached |
| Garage Area | 420 sqft |
| Parking Spaces | 2 Parking Spaces |
| Cooling System | Central |
|---|---|
| Heating System | HVAC |
| Account Number | R0011834 |
|---|---|
| Old Parcel Number | 157131403005 |
| Street Address | 5221 E 123RD AVE |
| City | THORNTON |
| State | CO |
| Zip | 80241-3213 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | SUB:CONCORD FILING NO 1 BLK:11 LOT:5 |
| Legal Range | 67W |
| Legal Township | 01S |
| Legal Section | 31 |
| Legal Quarter | NE |
| Legal Subdivision | CONCORD FILING NO 1 |
| Legal Block | 11 |
| Legal Lot Number | 5 |
| Jurisdiction | ADAMS CO |
| Township / Civil Division | WEST ADAMS |
| Census Block Group | 1 |
| Census Block | 1003 |
| Census Tract | 8547 |
Source: Adams County records · APN R0011834
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 Name on File |
|---|---|
| Co-owner | Verified Secondary Owner |
| Mailing Address | 5221 E 123RD AVE, THORNTON, CO 80241-3213 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Deed Names | 2 Verified Names on Deed |
|---|---|
| Last Sale | Mar 20, 2012 · Amount on Record |
| Deed Sale | Mar 20, 2012 · Amount on Record |
| Prior Sale | Dec 23, 2011 |
| Deed Document Number | 2012000020646 |
| 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, not market price estimates; both are a fraction of this property's market value.
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2025 | $1,274.00 (-66.81%) | $30,060 (-14.55%) Land $6,250 Building $23,810 | $481,000 (-7.5%) Land $100,000 Building $381,000 |
| 2023 | $3,838.00 (+11.93%) | $35,180 (+13.01%) Land $6,090 Building $29,090 | $520,000 (+16.12%) Land $90,000 Building $430,000 |
| 2022 | $3,429.00 | $31,130 Land $12,240 Building $18,890 | $447,802 Land $176,000 Building $271,802 |
Source: FEMA National Flood Hazard Layer as of October 2, 2026 · USDA Forest Service Wildfire Risk to Communities as of 2024 · Last verified October 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Nearest Special Flood Hazard Area | Zone A, within 500 ft |
| Flood Insurance Requirement | Not required lenders may require it |
| Wildfire Risk | Not rated no burnable land within ember reach |
|---|
Values are read at the parcel center point; lenders make the official flood determination.
Source: FCC Broadband Data Collection as of December 31, 2025 · Last verified October 2026
| 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.
Based on FCC filings for 820 locations within half a mile of this property.
Source: EPA Safe Drinking Water Information System as of 2026 Q3 · EPA water system boundaries as of March 2026 · Last verified October 2026
| Water System | CITY OF THORNTON serves 226,465 people |
|---|---|
| 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 as reported to EPA, not water tested at this address; lead at the tap also depends on the building's own pipes. The full violation and enforcement history is in the system's EPA record.
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