Boulder County property record for 405 Kalmia Ave, Boulder, CO 80304
| Property Type | Single Family Home |
|---|---|
| Details | 2 bd · 1 ba · 1,176 sqft · built 1900 |
| Lot Size | 0.478 acres (20,828 sqft) |
| Owner | Company Name on File |
| Last Sale | $799,500 (Aug 2000) |
| Tax Bill | $10,709 (2025) |
| Flood Zone | Zone X (moderate risk) |
| APN | 1461-24-1-21-003 |
| Primary APN | 1461-24-1-21-003 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 2 Beds |
|---|---|
| Full Baths | 1 Bath |
| Total Rooms | 4 Rooms |
| Stories | 1 Story |
| Building Area | 1,176 sqft Living Area |
| 1st Floor Area | 1,176 sqft |
| Interior Walls | Plaster |
| Year Built | Built 1900 |
|---|---|
| Effective Year Built | Effective 1985 |
| Architectural Style | Ranch |
| Exterior Material | Combination |
| Construction Type | Frame |
| Roof Material | Asphalt |
| Lot Area | 20,828 sqft (0.478 acres) |
| Garage Area | 450 sqft |
| Parking Spaces | 2 Parking Spaces |
| Deck Area | 558 sqft |
| Heating System | Forced Air with A/C |
|---|
| Account Number | R0006811 |
|---|---|
| Street Address | 405 KALMIA AVE |
| City | BOULDER |
| State | CO |
| Zip | 80304-1731 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | LOT 2 KALMIA HEIGHTS REPLAT |
| Legal Range | 71 |
| Legal Township | 1N |
| Legal Section | 24 |
| Legal Subdivision | KALMIA HEIGHTS REPLAT - BO |
| Legal Block | 2 |
| Legal Lot Number | 2 |
| Jurisdiction | BOULDER CO |
| Township / Civil Division | BOULDER |
| Census Block Group | 2 |
| Census Block | 2000 |
| Census Tract | 12101 |
405 Kalmia Ave is owned by a company that bought it in August 2000.
Source: Boulder County records, as of September 18, 2026
| Owner of Record | Company Name on File |
|---|---|
| Mailing Address | 401 KALMIA AVE, BOULDER, CO 80304-1731 |
| Owner Type | Company |
| Vesting | Company |
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Aug 29, 2000 · Amount on File |
| Deed Sale | Aug 29, 2000 · Amount on File |
| Prior Sale | Aug 10, 2000 · Amount on File |
| Deed Document Number | 20002074064 |
| Prior Transfer Date | Apr 26, 1996 |
| Prior Transfer Doc | 0001602947 |
| Record Updated | Oct 29, 2026 |
The 2025 property tax bill for 405 Kalmia Ave was $10,709.
Source: Boulder County assessment roll, as of September 18, 2026
| Type | Name |
|---|---|
| State | Colorado |
| County | Boulder County |
| Municipality | Boulder City |
| Unified School District | Boulder Valley School District RE-2 (PK - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $116,525 (+4.53%) Land $104,397 Building $12,128 | $1,783,600 (-) Land $1,605,240 Building $178,360 | |
| 2025 | $10,709.00 | $111,476 Land $100,328 Building $11,148 | $1,783,600 Land $1,605,240 Building $178,360 |
| 2023 | $9,664.00 (+20.38%) | $114,731 (+33.95%) Land $103,258 Building $11,473 | $1,712,400 (+38.95%) Land $1,541,160 Building $171,240 |
| 2022 | $8,028.00 | $85,652 Land $77,087 Building $8,565 | $1,232,400 Land $1,109,160 Building $123,240 |
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.
FEMA maps place 405 Kalmia Ave in Zone X, an area of moderate flood risk, within 100 ft of a high-risk flood zone.
Source: FEMA National Flood Hazard Layer, effective October 14, 2026 · OpenFEMA NFIP redacted claims and policies, as of September 2026
| FEMA Flood Zone | Zone X moderate risk |
|---|---|
| 500-Year Floodplain | Yes 0.2% annual chance |
| Nearest Special Flood Hazard Area | Zone AE, within 100 ft |
| Flood Insurance Requirement | Not required lenders may require it |
| Flood Insurance Cost | Premium on File median of 63 policies |
| Community Rating System | Class 5 (25% premium discount) |
| Nearby Flood Policies | 63 in force |
| Nearby Flood Claims | 25 (1990–2026) |
| Claims Outside the SFHA | 17 of 25 |
| Most Recent Claim | Jun 2026 · rainfall accumulation |
| Claims by Event |
|
Values are read at the parcel center point; flood claims are located to the census block group, not this parcel; lenders make the official flood determination.
Wildfire risk around 405 Kalmia Ave is high, ranking above 75% of the US, with a 0.5% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | High above 75% of the US · above 75% of Colorado |
|---|---|
| Wildfire Likelihood | 0.5% annual chance |
| Exposure | Direct burnable vegetation |
Values cover an area roughly 900 ft across, not the parcel itself; insurers use their own ratings.
Source: EPA Safe Drinking Water Information System, as of September 2026
| Water System | CITY OF BOULDER serves 166,080 people · EPA ID CO0107152 |
|---|---|
| Water Source | Surface water |
| Last State Inspection | Sep 2024 |
| Lead | 2 ppb (2023–2025) action level 15 ppb |
| Water Quality | Haloacetic acids resolved · Jul 2017 |
|---|---|
| Treatment and Procedure | None last 10 years |
| Monitoring and Reporting | 1 last 3 years |
Results are for the whole water system, not water tested at this address; lead at the tap also depends on the building's own pipes.
Source: FCC Broadband Data Collection, based on 431 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Ayva Networks Fixed Wireless | 2,500 / 2,500 |
| CenturyLink Fiber | 2,000 / 1,000 |
| Xfinity Cable | 2,000 / 250 |
| Verizon Fixed Wireless | 300 / 20 |
| LiveWireNet Fixed Wireless | 250 / 100 |
May also be available: T-Mobile.
5G (outdoors only) and 4G LTE
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