Boulder County property record for 890 Union Ave, Boulder, CO 80304 · Last verified June 2026
| Property Type | Residential > Single Family > Home |
|---|---|
| Bedrooms | 4 Beds |
| Bathrooms | 2.75 Baths |
| Year Built | Built 1990 |
| Square Footage | 3,494 sqft Living Area |
| Lot Size | 7,306 sqft (0.168 acres) |
| Occupancy | Owner Occupied |
| Last Sale | $203,600 (1990) |
| Tax Bill | $8,813.00 (2025) |
| Primary APN | 1461-13-1-23-002 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 2.75 Baths |
| Partial Baths | 3 Partial Baths |
| Total Rooms | 9 Rooms |
| Building Area | 3,494 sqft Living Area |
| Gross Area | 4,134 sqft Gross Area |
| 1st Floor | 1,261 sqft 1st Floor |
| Upper Floors | 1,117 sqft Upper Floors |
| Basement Area | 1,216 sqft Basement |
| Finished Basement | 1,116 sqft Finished |
| Unfinished Basement | 100 sqft Unfinished |
| Stories | 2 Stories |
| Interior Structure | Wallboard/Drywall Interior Structure |
| Year Built | Built 1990 |
|---|---|
| Effective Year Built | Effective 1990 |
| Architectural Style | A-Frame Style |
| Exterior Material | Wood Shingle Exterior |
| Construction Type | Frame Construction |
| Lot Area | 7,306 sqft (0.168 acres) |
| Parking Spaces | 2 Parking Spaces |
| Garage Type | Attached Garage |
| Garage Area | 540 sqft Garage |
| Deck Area | 189 sqft Deck |
| Porch | Porch |
| Porch Area | 150 sqft Porch |
| Heating System | Forced Air with Air Conditioning Heating |
|---|
| Account Number | R0108153 |
|---|---|
| Street Address | 890 UNION AVE |
| City | BOULDER |
| State | CO |
| Zip | 80304-0709 |
| Property Usage | Residential Property Usage |
| Type | Residential > Single Family > Home |
| Legal Description | LOT 2 ERIN TRUNCK |
| Legal Range | 71 |
| Legal Township | 1N |
| Legal Section | 13 |
| Legal Subdivision | ERIN TRUNCK SUBDIVISION - BO |
| Legal Block | 1 |
| Legal Lot Number | 2 |
| Jurisdiction | BOULDER CO |
| Minor Civil Division | BOULDER |
| Census Blockgroup | 1 |
| Census Block | 1007 |
| Census Tract | 12104 |
Source: Boulder County records · APN 1461-13-1-23-002
Assessment roll updated June 15, 2026 · Last verified June 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | 2 Individuals Owners |
|---|---|
| Mailing Address | 890 UNION AVE, BOULDER, CO 80304-0709 |
| Occupancy | Owner Occupied |
| Owner Type | Owner is an Individual, Couple or Unincorporated Entity |
| Deed Names | 2 Verified Names on Deed |
|---|---|
| Known Transactions |
|
| Deed Doc Number | 19901067930 |
| Record Refreshed | Sep 20, 2026 |
Source: Boulder County records · Assessment roll updated June 15, 2026 · Last verified June 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 | $107,372 (+8.8%) Land $69,265 Building $38,107 | $1,579,000 (-) Land $1,018,600 Building $560,400 | |
| 2025 | $8,813.00 (+1.07%) | $98,688 (-11.38%) Land $63,663 Building $35,025 | $1,579,000 (-5%) Land $1,018,600 Building $560,400 |
| 2023 | $8,720.00 (+22.9%) | $111,361 (+34.82%) Land $69,479 Building $41,882 | $1,662,100 (+39.85%) Land $1,037,000 Building $625,100 |
| 2022 | $7,095.00 | $82,601 Land $55,663 Building $26,938 | $1,188,500 Land $800,900 Building $387,600 |
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