Adams County property record for 3580 E 99th Ln, Thornton, CO 80229 · Last verified February 2026
| Property Type | Residential > Single Family > Home |
|---|---|
| Bedrooms | 3 Beds |
| Bathrooms | 1 Baths |
| Year Built | Built 1986 |
| Square Footage | 1,123 sqft Living Area |
| Lot Size | 6,970 sqft (0.16 acres) |
| Occupancy | Owner Occupied |
| Last Sale | $112,800 (1996) |
| Tax Bill | $853.00 (2025) |
| Primary APN | R0040226 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 1 Baths |
| Plumbing Fixtures | 6 Plumbing Fixtures |
| Total Rooms | 5 Rooms |
| Building Area | 1,123 sqft Living Area |
| 1st Floor | 1,123 sqft 1st Floor |
| Basement Area | 884 sqft Basement |
| Stories | 1 Stories |
| Interior Structure | Wallboard/Drywall Interior Structure |
| Fireplace | Fireplace |
| Year Built | Built 1986 |
|---|---|
| Architectural Style | Ranch Style |
| Exterior Material | Aluminum/Vinyl Exterior |
| Construction Type | Frame Construction |
| Roof Construction | Gable Roof Construction |
| Roof Material | Composition Shingle Roof |
| Lot Area | 6,970 sqft (0.16 acres) |
| Depth X Width | 109 ft x 65 ft Depth x Width |
| Parking Spaces | 1 Parking Spaces |
| Garage Type | Attached Garage |
| Garage Area | 399 sqft Garage |
| Porch | Porch |
| Porch Area | 87 sqft Porch |
| Cooling System | Central Cooling |
|---|---|
| Heating System | Forced Air Heating |
| Account Number | R0040226 |
|---|---|
| Old Parcel Number | 171913401017 |
| Street Address | 3580 E 99TH LN |
| City | THORNTON |
| State | CO |
| Zip | 80229-2813 |
| Property Usage | Residential Property Usage |
| Type | Residential > Single Family > Home |
| Legal Description | SUB:NORTH HILLS FILING NUMBER ONE SUBD BLK:2 LOT:5 |
| Legal Range | 68W |
| Legal Township | 02S |
| Legal Section | 13 |
| Legal Quarter | SW |
| Legal Subdivision | NORTH HILLS FILING NUMBER ONE SUBD |
| Legal Block | 2 |
| Legal Lot Number | 5 |
| Jurisdiction | ADAMS CO |
| Minor Civil Division | WEST ADAMS |
| Census Blockgroup | 1 |
| Census Block | 1011 |
| Census Tract | 9207 |
Source: Adams County records · APN R0040226
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 | 3580 E 99TH LN, THORNTON, CO 80229-2813 |
| 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 | 00178841 |
| Deed Book / Page | 4758 / 192 |
| 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 | Mapleton School District 1 (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 | $853.00 (-72.54%) | $20,120 (-36.05%) Land $4,290 Building $15,830 | $422,000 (-9.25%) Land $90,000 Building $332,000 |
| 2023 | $3,106.00 (+8.41%) | $31,460 (+9.43%) Land $5,750 Building $25,710 | $465,000 (+12.41%) Land $85,000 Building $380,000 |
| 2022 | $2,865.00 | $28,750 Land $11,820 Building $16,930 | $413,663 Land $170,000 Building $243,663 |
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