Boulder County property record for 43 Riverside Dr, Lyons, CO 80540 · Last verified June 2026
| Property Type | Residential > Single Family > Home |
|---|---|
| Bedrooms | 1 Beds |
| Bathrooms | 1.75 Baths |
| Year Built | Built 1950 |
| Square Footage | 765 sqft Living Area |
| Lot Size | 12,612 sqft (0.29 acres) |
| Occupancy | Owner Occupied |
| Last Sale | $400,000 (2022) |
| Tax Bill | $1,694.00 (2025) |
| Primary APN | 1199-34-4-06-004 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 1 Beds |
|---|---|
| Full Baths | 1.75 Baths |
| Partial Baths | 1 Partial Baths |
| Total Rooms | 3 Rooms |
| Building Area | 765 sqft Living Area |
| Gross Area | 977 sqft Gross Area |
| 1st Floor | 765 sqft 1st Floor |
| Stories | 1 Stories |
| Interior Structure | Unfinished Interior Structure |
| Year Built | Built 1936 |
|---|---|
| Effective Year Built | Effective 1950 |
| Architectural Style | Ranch Style |
| Exterior Material | Logs Exterior |
| Construction Type | Frame Construction |
| Lot Area | 12,612 sqft (0.29 acres) |
| Deck Area | 24 sqft Deck |
| Porch | Enclosed Porch |
| Porch Area | 212 sqft Porch |
| Account Number | R0053700 |
|---|---|
| Street Address | 43 RIVERSIDE DR |
| City | LYONS |
| State | CO |
| Zip | 80540-8964 |
| Property Usage | Residential Property Usage |
| Type | Residential > Single Family > Home |
| Legal Description | LOTS 5-6 BLK 3 RIVERSIDE |
| Legal Range | 72 |
| Legal Township | 3N |
| Legal Section | 34 |
| Legal Subdivision | RIVERSIDE - MT |
| Legal Block | 3 |
| Legal Lot Number | 5 |
| Jurisdiction | BOULDER CO |
| Minor Civil Division | UPPER ST. VRAIN |
| Census Blockgroup | 1 |
| Census Block | 1047 |
| Census Tract | 13602 |
Source: Boulder County records · APN 1199-34-4-06-004
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 | 2 Individual Names on File |
|---|---|
| Mailing Address | 43 RIVERSIDE DR, LYONS, CO 80540-8964 |
| Occupancy | Owner Occupied |
| Owner Type | Owner is an Individual, Couple or Unincorporated Entity |
| Vesting | Joint Tenants |
| Deed Names | 2 Verified Names on Deed |
|---|---|
| Last Sale | Dec 01, 2022 · Amount on Record |
| Deed Sale | Dec 01, 2022 · Amount on Record |
| Prior Sale | Mar 04, 2002 · Amount on Record |
| Deed Doc Number | 20223990653 |
| Record Refreshed | Sep 20, 2026 |
| Document Type | Special Warranty Deed |
|---|---|
| Jurisdiction | BOULDER CO |
| Recording Date | Dec 01, 2022 |
| Property Address | 43 RIVERSIDE DR, LYONS, CO 80540-8964 |
| Document Number | 0003990653 |
| Instrument Date | Nov 30, 2022 |
| Instrument | 3990653 |
| Transaction Type | Transfer |
| Record Updated | Feb 27, 2024 |
| Title Company | HERITAGE TITLE COMPANY |
| Amount | Amount Recorded |
|---|---|
| Downpayment | Downpayment on File |
| Loan-to-Value (LTV) | LTV on Record |
| Tax | $40.00 |
| Amount Accuracy | Full Amount Stated |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Joint Tenants |
| Address | 43 RIVERSIDE DR, LYONS, CO 80540-8964 |
| Document Number | 0003990654 |
|---|---|
| Date | Dec 01, 2022 |
| Instrument | 3990654 |
| Name | AMERICAN AIRLINES FCU |
|---|---|
| Type | Credit Union |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 180 Months |
| Due | Dec 01, 2037 |
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 | $18,779 (+8.8%) Land $2,455 Building $16,324 | $276,164 (-) Land $36,100 Building $240,064 | |
| 2025 | $1,694.00 (+21.61%) | $17,260 (-12.02%) Land $2,256 Building $15,004 | $276,164 (-5.68%) Land $36,100 Building $240,064 |
| 2023 | $1,393.00 (-8.05%) | $19,617 (+19.18%) Land $2,157 Building $17,460 | $292,800 (+23.63%) Land $32,200 Building $260,600 |
| 2022 | $1,515.00 | $16,460 Land $2,196 Building $14,264 | $236,844 Land $31,600 Building $205,244 |
43 Riverside Dr is in FEMA Zone AE, inside 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 AE regulatory floodway (1% zone; no fill or obstruction) |
|---|---|
| Special Flood Hazard Area | Yes flood insurance required for federally backed mortgages |
| Floodway | Yes |
| Base Flood Elevation | Varies along the reach; see FIRM |
Source: USDA Forest Service Wildfire Risk to Communities · 2nd edition (2024), fuels as of 2020
| Wildfire Risk to Homes | Extreme 98th percentile of exposed land nationally · 100th in Colorado |
|---|---|
| Wildfire Likelihood | Extreme — about 1 in 59 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.
Values are read at the parcel center point; lenders make the official flood determination.
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