Boulder County property record for 3655 Duncan Ln, Boulder, CO 80301
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 1 ba · 1,434 sqft · built 1930 |
| Lot Size | 5.59 acres (243,503 sqft) |
| Owner | Company Name on Record |
| Tax Bill | $5,421 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 1465-20-0-02-001 |
| Primary APN | 1465-20-0-02-001 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 1 Bath |
| Total Rooms | 8 Rooms |
| Stories | 1 Story |
| Building Area | 1,434 sqft Living Area |
| 1st Floor Area | 1,434 sqft |
| Interior Walls | Plaster |
| Year Built | Built 1930 |
|---|---|
| Effective Year Built | Effective 1940 |
| Architectural Style | Ranch |
| Exterior Material | Combination |
| Construction Type | Masonry / Concrete Block |
| Lot Area | 243,503 sqft |
| Garage Type | Detached |
| Garage Area | 480 sqft |
| Parking Spaces | 2 Parking Spaces |
| Porch | Porch |
|---|---|
| Porch Area | 140 sqft |
| Milk House | Milk House |
| Total Buildings | 3 Buildings |
| Heating System | Floor/Wall Furnace |
|---|
| Account Number | R0509362 |
|---|---|
| Street Address | 3655 DUNCAN LN |
| City | BOULDER |
| State | CO |
| Zip | 80301-3101 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | A |
| Legal Description | LOT 1 ERTL FARM NUPUD REPLAT A |
| Legal Range | 69 |
| Legal Township | 1N |
| Legal Section | 20 |
| Legal Subdivision | ERTL FARM NUPUD REP A |
| Legal Block | 2 |
| Legal Lot Number | 1 |
| Jurisdiction | BOULDER CO |
| Township / Civil Division | BOULDER |
| Census Block Group | 2 |
| Census Block | 2002 |
| Census Tract | 12707 |
Source: Boulder County records, as of September 18, 2026
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Owner of Record | Company Name on Record |
|---|---|
| Mailing Address | 3461 DUNCAN LN, BOULDER, CO 80301 |
| Owner Type | Company |
| Deed Names | Name on Deed |
|---|---|
| Record Updated | Oct 29, 2026 |
Source: Boulder County assessment roll, as of September 18, 2026
| Type | Name |
|---|---|
| State | Colorado |
| County | Boulder County |
| Unified School District | Boulder Valley School District RE-2 (PK - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $53,337 (-1.09%) Land $28,678 Building $24,659 | $819,150 (-) Land $478,750 Building $340,400 | |
| 2025 | $5,421.00 (-14.8%) | $53,927 (-25.24%) Land $30,929 Building $22,998 | $819,150 (-21.14%) Land $478,750 Building $340,400 |
| 2024 | $6,363.00 (+1.55%) | ||
| 2023 | $6,266.00 (+28.03%) | $72,133 (+44.93%) Land $33,108 Building $39,025 | $1,038,800 (+45.06%) Land $481,200 Building $557,600 |
| 2022 | $4,894.00 | $49,771 Land $28,356 Building $21,415 | $716,130 Land $408,000 Building $308,130 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
Source: FEMA National Flood Hazard Layer, effective October 14, 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Nearest Special Flood Hazard Area | Zone AE, within 500 ft |
| Flood Insurance Requirement | Not required lenders may require it |
Values are read at the parcel center point; lenders make the official flood determination.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Moderate above 64% of the US · above 55% of Colorado |
|---|---|
| Wildfire Likelihood | 0.2% annual chance |
| Exposure | Direct burnable vegetation |
Values cover an area roughly 900 ft across, not the parcel itself; insurers use their own ratings.
Source: FCC Broadband Data Collection, based on 7 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Verizon Fixed Wireless | 300 / 20 |
| Starlink Satellite | 280 / 30 |
| AT&T Fixed Wireless | 100 / 20 |
| Rise Broadband Fixed Wireless | 50 / 10 |
May also be available: Ayva Networks, CenturyLink, T-Mobile.
5G (outdoors only) and 4G LTE
Search by:
By searching, you agree to: Terms • Privacy • Disclosures