Adams County property record for 521 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 1963 |
| Square Footage | 1,377 sqft Living Area |
| Lot Size | 10,019 sqft (0.23 acres) |
| Garage | Attached, 324 sqft |
| Occupancy | Owner Occupied |
| Tax Bill | $861.00 (2025) |
| Primary APN | R0042388 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2 Baths |
| Plumbing Fixtures | 9 Plumbing Fixtures |
| Total Rooms | 5 Rooms |
| Building Area | 1,377 sqft Living Area |
| 1st Floor | 1,377 sqft 1st Floor |
| Basement Area | 1,377 sqft Basement |
| Stories | 1 Stories |
| Interior Structure | Wallboard/Drywall Interior Structure |
| Fireplace | Fireplace |
| Year Built | Built 1963 |
|---|---|
| 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 | 10,019 sqft (0.23 acres) |
| Depth X Width | 130 ft x 76 ft Depth x Width |
| Parking Spaces | 1 Parking Spaces |
| Garage Type | Attached Garage |
| Garage Area | 324 sqft Garage |
| Porch | Porch |
| Porch Area | 480 sqft Porch |
| Cooling System | Central Cooling |
|---|---|
| Heating System | Forced Air Heating |
| Account Number | R0042388 |
|---|---|
| Old Parcel Number | 171915401014 |
| Street Address | 521 E 99TH PL |
| City | THORNTON |
| State | CO |
| Zip | 80229-2104 |
| Property Usage | Residential Property Usage |
| Type | Residential > Single Family > Home |
| Legal Description | SUB:LOMA LINDA PARK FIRST FILING AMENDED BLK:5 LOT:3 |
| 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 | 3 |
| Jurisdiction | ADAMS CO |
| Minor Civil Division | WEST ADAMS |
| Census Blockgroup | 1 |
| Census Block | 1003 |
| Census Tract | 9203 |
Source: Adams County records · APN R0042388
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 | 521 E 99TH PL, THORNTON, CO 80229-2104 |
| Occupancy | Owner Occupied |
| Owner Type | Owner is an Individual, Couple or Unincorporated Entity |
| Vesting | Owner is a Trust |
| Deed Names | Verified Name on Deed |
|---|---|
| Last Transfer Date | Dec 19, 2016 |
| Transfer Doc | 0000110409 |
| 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 and are not market price estimates.
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2025 | $861.00 (-74.14%) | $20,310 (-33.43%) Land $4,540 Building $15,770 | $425,000 (-5.76%) Land $95,000 Building $330,000 |
| 2023 | $3,329.00 (+6.94%) | $30,510 (+7.96%) Land $6,430 Building $24,080 | $451,000 (+10.91%) Land $95,000 Building $356,000 |
| 2022 | $3,113.00 | $28,260 Land $11,260 Building $17,000 | $406,636 Land $162,000 Building $244,636 |
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