Boulder County property record for 582 Riverside Dr, Lyons, CO 80540 · Last verified June 2026
| Property Type | Residential > Single Family > Home |
|---|---|
| Bedrooms | 2 Beds |
| Bathrooms | 1.75 Baths |
| Architecture Style | Ranch |
| Year Built | Built 1930 |
| Square Footage | 480 sqft Living Area |
| Lot Size | 10,911 sqft (0.251 acres) |
| Last Sale | $35,000 (1984) |
| Tax Bill | $1,660.00 (2025) |
| Primary APN | 1199-34-3-05-004 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 2 Beds |
|---|---|
| Full Baths | 1.75 Baths |
| Partial Baths | 1 Partial Baths |
| Total Rooms | 4 Rooms |
| Building Area | 480 sqft Living Area |
| Gross Area | 608 sqft Gross Area |
| 1st Floor | 480 sqft 1st Floor |
| Stories | 1 Stories |
| Interior Structure | Wallboard/Drywall Interior Structure |
| Year Built | Built 1930 |
|---|---|
| Effective Year Built | Effective 1930 |
| Architectural Style | Ranch Style |
| Exterior Material | Wood Shingle Exterior |
| Construction Type | Frame Construction |
| Lot Area | 10,911 sqft (0.251 acres) |
| Porch | Enclosed Porch |
| Porch Area | 128 sqft Porch |
| Account Number | R0053755 |
|---|---|
| Street Address | 582 RIVERSIDE DR |
| City | LYONS |
| State | CO |
| Zip | 80540 |
| Property Usage | Residential Property Usage |
| Type | Residential > Single Family > Home |
| Legal Description | LOT 4 & TR E & TR 3978 BLK 1 RIVERSIDE ALPINE |
| Legal Range | 72 |
| Legal Township | 3N |
| Legal Section | 34 |
| Legal Subdivision | RIVERSIDE ALPINE - MT |
| Legal Tract | E,3978 |
| Legal Block | 1 |
| Legal Lot Number | 4 |
| Jurisdiction | BOULDER CO |
| Minor Civil Division | UPPER ST. VRAIN |
| Census Blockgroup | 1 |
| Census Block | 1046 |
| Census Tract | 13602 |
Source: Boulder County records · APN 1199-34-3-05-004
Assessment roll updated June 15, 2026 · Last verified June 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | Company Name on File |
|---|---|
| Mailing Address | 975 E 132ND CIR, THORNTON, CO 80241-1121 |
| Owner Type | Owner is a Company |
| Vesting | Trustor/Debtor (Borrower in Default/Foreclosure On Trustee's Deed) |
| Deed Names | Verified Name on Deed |
|---|---|
| Last Sale | Oct 05, 1984 · Amount on Record |
| Deed Sale | Oct 05, 1984 · Amount on Record |
| Prior Sale | Jun 16, 1980 |
| Deed Doc Number | 1984650619 |
| Last Transfer Date | Sep 06, 2012 |
| Transfer Doc | 0003250647 |
| Record Refreshed | Sep 20, 2026 |
Source: Boulder County records · Assessment roll updated June 15, 2026 · Last verified June 2026
| Type | Name |
|---|---|
| State | Colorado |
| County | Boulder County |
| Unified School District | St. Vrain Valley School District RE 1J (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 |
|---|---|---|---|
| 2026 | $18,400 (+8.8%) Land $2,482 Building $15,918 | $270,593 (-) Land $36,500 Building $234,093 | |
| 2025 | $1,660.00 (+17.15%) | $16,912 (-13.93%) Land $2,281 Building $14,631 | $270,593 (-7.72%) Land $36,500 Building $234,093 |
| 2024 | $1,417.00 (+1.5%) | ||
| 2023 | $1,396.00 (-4.51%) | $19,648 (+24.92%) Land $2,111 Building $17,537 | $293,244 (+29.57%) Land $31,500 Building $261,744 |
| 2022 | $1,462.00 | $15,729 Land $2,161 Building $13,568 | $226,325 Land $31,100 Building $195,225 |
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