Boulder County property record for 543 Riverside Dr, Lyons, CO 80540 · Last verified June 2026
| Property Type | Residential > Single Family > Home |
|---|---|
| Bedrooms | 1 Beds |
| Architecture Style | Ranch |
| Year Built | Built 1927 |
| Square Footage | 286 sqft Living Area |
| Lot Size | 10,631 sqft (0.244 acres) |
| Last Sale | $130,000 (2023) |
| Tax Bill | $478.00 (2025) |
| Primary APN | 1199-34-3-06-001 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 1 Beds |
|---|---|
| Total Rooms | 2 Rooms |
| Building Area | 286 sqft Living Area |
| 1st Floor | 286 sqft 1st Floor |
| Stories | 1 Stories |
| Interior Structure | Plywood Interior Structure |
| Year Built | Built 1927 |
|---|---|
| Effective Year Built | Effective 1927 |
| Architectural Style | Ranch Style |
| Exterior Material | Wood Shingle Exterior |
| Construction Type | Frame Construction |
| Lot Area | 10,631 sqft (0.244 acres) |
| Porch | Porch |
| Porch Area | 117 sqft Porch |
| Account Number | R0053527 |
|---|---|
| Street Address | 543 RIVERSIDE DR |
| City | LYONS |
| State | CO |
| Zip | 80540-8974 |
| Property Usage | Residential Property Usage |
| Type | Residential > Single Family > Home |
| Legal Description | LOT 10 BLK 2 RIVERSIDE ALPINE |
| Legal Range | 72 |
| Legal Township | 3N |
| Legal Section | 34 |
| Legal Subdivision | RIVERSIDE ALPINE - MT |
| Legal Block | 2 |
| Legal Lot Number | 10 |
| Jurisdiction | BOULDER CO |
| Minor Civil Division | UPPER ST. VRAIN |
| Census Blockgroup | 1 |
| Census Block | 1047 |
| Census Tract | 13602 |
Source: Boulder County records · APN 1199-34-3-06-001
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 | 2 Individual Names on File |
|---|---|
| Mailing Address | 541 RIVERSIDE DR, LYONS, CO 80540-8974 |
| Owner Type | Owner is an Individual, Couple or Unincorporated Entity |
| Date | Document |
|---|---|
| Sep 18, 2023 | Special Warranty Deed, Transfer · Line of Credit RIVERSTONE BANK |
| Jan 04, 2021 | Grant Deed, Transfer HILLSBOROUGH TITLE INC, HTC |
| May 02, 2017 | Warranty Deed, Transfer HERITAGE TITLE COMPANY, HERITAGE TITLE CO. |
| Deed Names | 2 Verified Names on Deed |
|---|---|
| Last Sale | Sep 18, 2023 · Amount on Record |
| Deed Sale | Sep 18, 2023 · Amount on Record |
| Prior Sale | Jan 04, 2021 · Amount on Record |
| Deed Doc Number | 20234021886 |
| Record Refreshed | Sep 20, 2026 |
| Document Type | Special Warranty Deed |
|---|---|
| Jurisdiction | BOULDER CO |
| Recording Date | Sep 18, 2023 |
| Property Address | 543 RIVERSIDE DR, LYONS, CO 80540-8974 |
| Document Number | 0004021886 |
| Instrument Date | Sep 11, 2023 |
| Instrument | 4021886 |
| Transaction Type | Transfer |
| Record Updated | Oct 23, 2023 |
| Title Company | FIRST AMERICAN TITLE |
| Amount | Amount Recorded |
|---|---|
| Downpayment | Downpayment on File |
| Loan-to-Value (LTV) | LTV on Record |
| Tax | $13.00 |
| Amount Accuracy | Full Amount Stated |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Joint Tenants |
| Address | 541 RIVERSIDE DR, LYONS, CO 80540-8974 |
| Document Number | 0004021887 |
|---|---|
| Date | Sep 18, 2023 |
| Instrument | 4021887 |
| Name | RIVERSTONE BANK |
|---|---|
| Type | Bank |
| Type | Line of Credit |
|---|---|
| Amount | Amount Recorded |
| Term | 240 Months |
| Due | Sep 15, 2043 |
| Rate Type | Adjustable Rate |
|---|
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | BOULDER CO |
| Recording Date | Jan 04, 2021 |
| Property Address | 543 RIVERSIDE DR, LYONS, CO 80540-8974 |
| Document Number | 0003847427 |
| Instrument Date | Dec 31, 2020 |
| Instrument | 3847427 |
| Transaction Type | Transfer |
| Record Updated | Feb 05, 2021 |
| Title Company | HILLSBOROUGH TITLE INC, HTC |
| Amount | Amount Recorded |
|---|---|
| Tax | $5.00 |
| Amount Accuracy | Confirmed |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Company |
| Address | PO BOX 1475 LYONS CO 805401475, LYONS, CO 80540-1475 |
| Document Type | Warranty Deed |
|---|---|
| Jurisdiction | BOULDER CO |
| Recording Date | May 02, 2017 |
| Property Address | 543 RIVERSIDE DR, LYONS, CO 80540-8974 |
| Document Number | 0003589870 |
| Instrument Date | Apr 28, 2017 |
| Instrument | 3589870 |
| Transaction Type | Transfer |
| Record Updated | May 12, 2017 |
| Title Company | HERITAGE TITLE COMPANY, HERITAGE TITLE CO. |
| Amount | Amount Recorded |
|---|---|
| Tax | $3.00 |
| Amount Accuracy | Confirmed |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Joint Tenant/Joint Tenant w/ Right Of Survivorship |
| Address | PO BOX 3596 BOULDER CO 803073596, BOULDER, CO 80307-3596 |
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 is set for property tax purposes, not a market price estimate; it is a fraction of this property's market value.
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $5,304 (+8.8%) Land $1,632 Building $3,672 | $78,000 (-) Land $24,000 Building $54,000 | |
| 2025 | $478.00 (+225.17%) | $4,875 (-9.17%) Land $1,500 Building $3,375 | $78,000 (-2.62%) Land $24,000 Building $54,000 |
| 2023 | $147.00 (-62.5%) | $5,367 (+25.78%) Land $1,233 Building $4,134 | $80,100 (+30.46%) Land $18,400 Building $61,700 |
| 2022 | $392.00 | $4,267 Land $1,244 Building $3,023 | $61,400 Land $17,900 Building $43,500 |
543 Riverside Dr is in FEMA Zone X (minimal flood hazard (unshaded X)), outside the Special Flood Hazard Area, with direct wildfire exposure (Extreme risk).
Source: FEMA National Flood Hazard Layer · Boulder County (08013C), updated October 14, 2026
| FEMA Flood Zone | Zone X minimal flood hazard (unshaded X) |
|---|---|
| Special Flood Hazard Area | No |
| Nearest Special Flood Hazard Area | Zone AE, within 500 ft |
Source: USDA Forest Service Wildfire Risk to Communities · 2nd edition (2024)
| Wildfire Risk to Homes | Extreme 98th percentile of exposed land nationally · 100th in Colorado |
|---|---|
| Wildfire Likelihood | Extreme — about 1 in 58 per year |
| Exposure | Direct burnable vegetation at the parcel |
Insurers in high-risk areas may require mitigation or decline coverage; check availability before making an offer.
Lookups use the parcel center point against federal datasets; a lot that straddles a boundary may differ at its edges, and lenders make the official flood determination. Wildfire values come from a national model at roughly 900 ft resolution with fuels as of 2020 and describe conditions, not a forecast.
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