Adams County property record for 421 E 99th Pl, Thornton, CO 80229 · Last verified February 2026
| Property Type | Residential > Single Family > Home |
|---|---|
| Bedrooms | 3 Beds |
| Bathrooms | 2 Baths |
| Year Built | Built 1978 |
| Square Footage | 1,683 sqft Living Area |
| Lot Size | 9,148 sqft (0.21 acres) |
| Occupancy | Owner Occupied |
| Last Sale | $154,743 (1998) |
| Tax Bill | $972.00 (2025) |
| Primary APN | R0042383 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2 Baths |
| Plumbing Fixtures | 9 Plumbing Fixtures |
| Total Rooms | 6 Rooms |
| Building Area | 1,683 sqft Living Area |
| 1st Floor | 1,683 sqft 1st Floor |
| Basement Area | 1,383 sqft Basement |
| Stories | 1 Stories |
| Interior Structure | Wallboard/Drywall Interior Structure |
| Fireplace | Fireplace |
| Fireplaces | 1 Fireplaces |
| Year Built | Built 1978 |
|---|---|
| Architectural Style | Ranch Style |
| Exterior Material | Brick/Stone (Brick and/or Stone) Exterior |
| Construction Type | Frame Construction |
| Roof Construction | Gable Roof Construction |
| Roof Material | Composition Shingle Roof |
| Lot Area | 9,148 sqft (0.21 acres) |
| Depth X Width | 120 ft x 75 ft Depth x Width |
| Parking Spaces | 2 Parking Spaces |
| Garage Type | Attached Garage |
| Garage Area | 420 sqft Garage |
| Shed | 1 Shed |
|---|---|
| Shed Area | 120 sqft Shed |
| Porch | Open Porch |
| Porch Area | 137 sqft Porch |
| Cooling System | Central Cooling |
|---|---|
| Heating System | HVAC Heating |
| Account Number | R0042383 |
|---|---|
| Old Parcel Number | 171915401009 |
| Street Address | 421 E 99TH PL |
| City | THORNTON |
| State | CO |
| Zip | 80229-2103 |
| Property Usage | Residential Property Usage |
| Type | Residential > Single Family > Home |
| Legal Description | SUB:LOMA LINDA PARK FIRST FILING AMENDED BLK:5 LOT:8 |
| Legal Range | 68W |
| Legal Township | 02S |
| Legal Section | 15 |
| Legal Quarter | SE |
| Legal Subdivision | LOMA LINDA PARK FIRST FILING AMENDED |
| Legal Block | 5 |
| Legal Lot Number | 8 |
| Jurisdiction | ADAMS CO |
| Minor Civil Division | WEST ADAMS |
| Census Blockgroup | 1 |
| Census Block | 1003 |
| Census Tract | 9203 |
Source: Adams County records · APN R0042383
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 Individuals Owners |
|---|---|
| Mailing Address | 421 E 99TH PL, THORNTON, CO 80229-2103 |
| Occupancy | Owner Occupied |
| Owner Type | Owner is an Individual, Couple or Unincorporated Entity |
| Deed Names | 2 Verified Names on Deed |
|---|---|
| Known Transactions |
|
| Deed Doc Number | 00381723 |
| Deed Book / Page | 5287 / 565 |
| 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 | $972.00 (-73.56%) | $22,940 (-31.91%) Land $4,670 Building $18,270 | $467,000 (-6.22%) Land $95,000 Building $372,000 |
| 2023 | $3,676.00 (+15.09%) | $33,690 (+16.17%) Land $6,430 Building $27,260 | $498,000 (+19.37%) Land $95,000 Building $403,000 |
| 2022 | $3,194.00 | $29,000 Land $11,260 Building $17,740 | $417,194 Land $162,000 Building $255,194 |
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