Boulder County property record for 443 Alpine Ave, Boulder, CO 80304
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 3.75 ba · 4,581 sqft · built 2009 |
| Lot Size | 0.152 acres (6,624 sqft) |
| Owner | Individual Name on Record |
| Last Sale | $1,530,000 (Dec 2010) |
| Tax Bill | $17,971 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 1461-25-1-53-009 |
| Primary APN | 1461-25-1-53-009 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 3.75 Baths |
| Half Baths | 4 Half Baths |
| Total Rooms | 10 Rooms |
| Stories | 2 Stories |
| Building Area | 4,581 sqft Living Area |
| Gross Area | 4,859 sqft |
| 1st Floor Area | 1,735 sqft |
| Upper Floors Area | 1,319 sqft |
| Basement Area | 1,805 sqft |
| Finished Basement | 1,527 sqft |
| Unfinished Basement | 278 sqft |
| Interior Walls | Wallboard/Drywall |
| Year Built | Built 2009 |
|---|---|
| Effective Year Built | Effective 2009 |
| Architectural Style | A-Frame |
| Exterior Material | Wood Shingle |
| Construction Type | Frame |
| Roof Material | Asphalt |
| Lot Area | 6,624 sqft (0.152 acres) |
| Garage Type | Detached |
| Garage Area | 486 sqft |
| Parking Spaces | 2 Parking Spaces |
| Porch | Porch |
|---|---|
| Porch Area | 76 sqft |
| Deck Area | 187 sqft |
| Patio Area | 580 sqft |
| Cooling System | Central |
|---|---|
| Heating System | Forced Air with A/C |
| Account Number | R0000970 |
|---|---|
| Street Address | 443 ALPINE AVE |
| City | BOULDER |
| State | CO |
| Zip | 80304-3208 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | W 1/2 LOTS 17-18-19 & W 1/2 OF S 15 FT LOT 20 BLK 37 NEWLANDS |
| Legal Range | 71 |
| Legal Township | 1N |
| Legal Section | 25 |
| Legal Subdivision | NEWLANDS - BO |
| Legal Block | 37 |
| Legal Lot Number | 17 |
| Jurisdiction | BOULDER CO |
| Township / Civil Division | BOULDER |
| Census Block Group | 1 |
| Census Block | 1003 |
| Census Tract | 12101 |
Source: Boulder County records, as of September 18, 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | Individual Name on Record |
|---|---|
| Mailing Address | 443 ALPINE AVE, BOULDER, CO 80304-3208 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Dec 3, 2010 · Amount on Record |
| Deed Sale | Dec 3, 2010 · Amount on Record |
| Prior Sale | Dec 8, 2008 · Amount on Record |
| Deed Document Number | 20103117351 |
| Record Updated | Oct 29, 2026 |
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 | $207,101 (+6.36%) Land $91,270 Building $115,831 | $3,115,600 (-) Land $1,412,200 Building $1,703,400 | |
| 2025 | $17,971.00 (+0.92%) | $194,726 (-7.22%) Land $88,263 Building $106,463 | $3,115,600 (-0.54%) Land $1,412,200 Building $1,703,400 |
| 2023 | $17,807.00 (+2.72%) | $209,884 (+12.43%) Land $97,820 Building $112,064 | $3,132,600 (+16.63%) Land $1,460,000 Building $1,672,600 |
| 2022 | $17,335.00 | $186,677 Land $70,251 Building $116,426 | $2,686,000 Land $1,010,800 Building $1,675,200 |
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.
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 minimal risk |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
| Flood Insurance Cost | Premium on Record median of 12 individual policies |
| Community Rating System | Class 5 (25% premium discount) |
| Nearby Flood Policies | 16 units insured incl. 4 condo units |
| Nearby Flood Claims | 3 (2013) |
| Claims Outside the SFHA | 3 of 3 |
| Most Recent Claim | Sep 2013 · Severe Storms, Flooding, Landslides, And Mudslides |
| 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.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | High above 77% of the US · above 77% of Colorado |
|---|---|
| Wildfire Likelihood | 0.5% annual chance |
| Exposure | Indirect within ember reach |
| Adjoins Burnable Land | Yes |
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 223 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 · DSL in parts of the area | 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.
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