Boulder County property record for 445 Alpine Ave, Boulder, CO 80304
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 2 ba · 1,705 sqft · built 1925 |
| Lot Size | 0.145 acres (6,315 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $727,500 (Aug 2007) |
| Tax Bill | $10,109 (2025) |
| Deeds & Mortgages | Jul 2019 Mortgage Mar 2020 Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 1461-25-1-53-010 |
| Primary APN | 1461-25-1-53-010 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 8 Rooms |
| Stories | 2 Stories |
| Building Area | 1,705 sqft Living Area |
| 1st Floor Area | 1,064 sqft |
| Upper Floors Area | 641 sqft |
| Interior Walls | Wallboard/Drywall |
| Year Built | Built 1925 |
|---|---|
| Effective Year Built | Effective 1995 |
| Architectural Style | A-Frame |
| Exterior Material | Wood Shingle |
| Construction Type | Frame |
| Roof Material | Asphalt |
| Lot Area | 6,315 sqft (0.145 acres) |
| Porch | Porch |
| Porch Area | 44 sqft |
| Cooling System | Central |
|---|---|
| Heating System | Forced Air with A/C |
| Account Number | R0006428 |
|---|---|
| Street Address | 445 ALPINE AVE |
| City | BOULDER |
| State | CO |
| Zip | 80304-3208 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | E1/2 LOTS 17-18-19 & E 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 |
445 Alpine Ave is owned and occupied by two individuals who bought it in August 2007.
Source: Boulder County records, as of September 18, 2026
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 445 ALPINE AVE, BOULDER, CO 80304-3208 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Date | Document |
|---|---|
| Jul 22, 2019 | Deed of Trust, Mortgage · Conventional Mortgage SWBC MORTGAGE CORP |
| Mar 3, 2020 | Deed of Trust, Mortgage · Conventional Mortgage SWBC MORTGAGE CORP |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Aug 1, 2007 · Amount on File |
| Deed Sale | Aug 1, 2007 · Amount on File |
| Prior Sale | Jun 28, 2004 · Amount on File |
| Deed Document Number | 20072873021 |
| Prior Transfer Date | Jan 27, 1994 |
| Prior Transfer Doc | 0001391591 |
| Record Updated | Oct 29, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | BOULDER CO |
| Property Address | 445 ALPINE AVE, BOULDER, CO 80304-3208 |
| Transaction Type | Mortgage |
| Record Updated | Feb 5, 2021 |
| Title Company | FIRST INTEGRITY TITLE |
| Name | Verified Name |
|---|
| Document Number | 0003725399 |
|---|---|
| Date | Jul 22, 2019 |
| Instrument | 3725399 |
| Name | SWBC MORTGAGE CORP |
|---|---|
| Type | Mortgage Company |
| Address | SAN ANTONIO, TX 78216 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 361 Months |
| Due | Aug 1, 2049 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | BOULDER CO |
| Property Address | 445 ALPINE AVE, BOULDER, CO 80304-3208 |
| Transaction Type | Mortgage |
| Record Updated | Feb 5, 2021 |
| Title Company | FIRST INTEGRITY TITLE |
| Name | Verified Name |
|---|
| Document Number | 0003769650 |
|---|---|
| Date | Mar 3, 2020 |
| Instrument | 3769650 |
| Name | SWBC MORTGAGE CORP |
|---|---|
| Type | Mortgage Company |
| Address | SAN ANTONIO, TX 78216 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 360 Months |
| Due | Mar 1, 2050 |
The 2025 property tax bill for 445 Alpine Ave was $10,109.
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 | $110,595 (+4.31%) Land $89,005 Building $21,590 | $1,696,400 (-) Land $1,378,900 Building $317,500 | |
| 2025 | $10,109.00 | $106,025 Land $86,181 Building $19,844 | $1,696,400 Land $1,378,900 Building $317,500 |
| 2023 | $10,079.00 (+20.23%) | $120,399 (+33.36%) Land $95,515 Building $24,884 | $1,797,000 (+38.34%) Land $1,425,600 Building $371,400 |
| 2022 | $8,383.00 | $90,281 Land $68,590 Building $21,691 | $1,299,000 Land $986,900 Building $312,100 |
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 445 Alpine Ave in Zone X, an area of minimal flood risk, though there have been 3 flood claims nearby since 2013.
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 File 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.
Wildfire risk around 445 Alpine Ave is high, ranking above 77% 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 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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