Boulder County property record for 428 Alpine Ave, Boulder, CO 80304 · Last verified July 2026
| Property Type | Residential > Single Family > Home |
|---|---|
| Bedrooms | 5 Beds |
| Bathrooms | 3.5 Baths |
| Year Built | Built 2026 |
| Square Footage | 3,711 sqft Living Area |
| Lot Size | 5,777 sqft (0.133 acres) |
| Garage | Detached, 440 sqft |
| Last Sale | $770,000 (2025) |
| Tax Bill | $5,945.00 (2025) |
| Primary APN | 1461-25-1-10-004 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 5 Beds |
|---|---|
| Full Baths | 3.5 Baths |
| Partial Baths | 1 Partial Baths |
| Total Rooms | 9 Rooms |
| Building Area | 3,711 sqft Living Area |
| Gross Area | 4,122 sqft Gross Area |
| 1st Floor | 1,458 sqft 1st Floor |
| Basement Area | 1,458 sqft Basement |
| Stories | 1 Stories |
| Interior Structure | Plaster Interior Structure |
| Year Built | Built 2026 |
|---|---|
| Effective Year Built | Effective 2026 |
| Architectural Style | Ranch Style |
| Exterior Material | Wood Shingle Exterior |
| Construction Type | Frame Construction |
| Roof Material | Asphalt Roof |
| Lot Area | 5,777 sqft (0.133 acres) |
| Parking Spaces | 1 Parking Spaces |
| Garage Type | Detached Garage |
| Garage Area | 440 sqft Garage |
| Total Buildings | 2 Total Buildings |
|---|---|
| Patio Area | 60 sqft Patio |
| Porch | Enclosed Porch |
| Porch Area | 202 sqft Porch |
| Cooling System | Central Cooling |
|---|---|
| Heating System | Forced Air with Air Conditioning Heating |
| Account Number | R0007411 |
|---|---|
| Street Address | 428 ALPINE AVE |
| City | BOULDER |
| State | CO |
| Zip | 80304-3209 |
| Property Usage | Residential Property Usage |
| Type | Residential > Single Family > Home |
| Legal Description | LOT 3 BLK 1 MOUNTAIN HEIGHTS & R/W FOR 20 FT ON S |
| Legal Range | 71 |
| Legal Township | 1N |
| Legal Section | 25 |
| Legal Subdivision | MOUNTAIN HIGHTS - BO |
| Legal Block | 1 |
| Legal Lot Number | 3 |
| Jurisdiction | BOULDER CO |
| Minor Civil Division | BOULDER |
| Census Blockgroup | 1 |
| Census Block | 1005 |
| Census Tract | 12101 |
Source: Boulder County records · APN 1461-25-1-10-004
Assessment roll updated June 15, 2026 · Last verified July 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | Company Name on File |
|---|---|
| Mailing Address | 7332 ERIN CT, NIWOT, CO 80503-6490 |
| Owner Type | Owner is a Company |
| Deed Names | Verified Name on Deed |
|---|---|
| Known Transactions |
|
| Deed Doc Number | 20254073573 |
| Prior Transfer Date | Jan 13, 2025 |
| Prior Transfer Doc | 0004082008 |
| Record Refreshed | Sep 20, 2026 |
Source: Boulder County records · Assessment roll updated June 15, 2026 · Last verified July 2026
| Type | Name |
|---|---|
| State | Colorado |
| County | Boulder County |
| Municipality | Boulder City |
| Unified School District | Boulder Valley School District RE-2 (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 | $59,780 (-12.87%) Land $59,780 | $879,120 (-19.91%) Land $879,120 | |
| 2025 | $5,945.00 (+2.25%) | $68,607 (-11.72%) Land $61,746 Building $6,861 | $1,097,700 (-5.36%) Land $987,930 Building $109,770 |
| 2023 | $5,814.00 (+23.75%) | $77,713 (+35.05%) Land $69,942 Building $7,771 | $1,159,900 (+40.08%) Land $1,043,910 Building $115,990 |
| 2022 | $4,698.00 | $57,546 Land $51,791 Building $5,755 | $828,000 Land $745,200 Building $82,800 |
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