Boulder County property record for 820 Union Ave, Boulder, CO 80304 · Last verified June 2026
| Property Type | Residential > Single Family > Home |
|---|---|
| Bedrooms | 2 Beds |
| Bathrooms | 1.5 Baths |
| Year Built | Built 1995 |
| Square Footage | 1,432 sqft Living Area |
| Lot Size | 7,803 sqft (0.179 acres) |
| Occupancy | Owner Occupied |
| Last Sale | $451,000 (2004) |
| Tax Bill | $7,471.00 (2025) |
| Primary APN | 1461-13-1-40-003 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 2 Beds |
|---|---|
| Full Baths | 1.5 Baths |
| Partial Baths | 1 Partial Baths |
| Total Rooms | 5 Rooms |
| Building Area | 1,432 sqft Living Area |
| 1st Floor | 1,432 sqft 1st Floor |
| Stories | 1 Stories |
| Interior Structure | Wallboard/Drywall Interior Structure |
| Year Built | Built 1959 |
|---|---|
| Effective Year Built | Effective 1995 |
| Architectural Style | Ranch Style |
| Exterior Material | Wood Shingle Exterior |
| Construction Type | Frame Construction |
| Roof Material | Asphalt Roof |
| Lot Area | 7,803 sqft (0.179 acres) |
| Garage Area | 528 sqft Garage |
| Cooling System | Evaporative Cooling |
|---|---|
| Heating System | Forced Air with Air Conditioning Heating |
| Account Number | R0511697 |
|---|---|
| Street Address | 820 UNION AVE |
| City | BOULDER |
| State | CO |
| Zip | 80304-0709 |
| Property Usage | Residential Property Usage |
| Type | Residential > Single Family > Home |
| Legal Description | LOT 1C LAMBERT MINOR SUBDIVISION REPLAT OF TRACT I AS SHOWN ON LOT LINE ADJUSTMENT MAP REC#2789874 |
| Legal Range | 71 |
| Legal Township | 1N |
| Legal Section | 13 |
| Legal Subdivision | LAMBERT MINOR REP |
| Legal Tract | I |
| Legal Block | 1 |
| Legal Lot Number | 1C |
| Jurisdiction | BOULDER CO |
| Minor Civil Division | BOULDER |
| Census Blockgroup | 1 |
| Census Block | 1007 |
| Census Tract | 12104 |
Source: Boulder County records · APN 1461-13-1-40-003
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 | Individual Owner on File |
|---|---|
| Mailing Address | 820 UNION AVE, BOULDER, CO 80304-0709 |
| Occupancy | Owner Occupied |
| Owner Type | Owner is an Individual, Couple or Unincorporated Entity |
| Deed Names | Verified Name on Deed |
|---|---|
| Known Transactions |
|
| Deed Doc Number | 20042651850 |
| Prior Transfer Date | Mar 09, 2004 |
| Prior Transfer Doc | 0002565637 |
| 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 | $85,252 (+8.8%) Land $71,584 Building $13,668 | $1,253,700 (-) Land $1,052,700 Building $201,000 | |
| 2025 | $7,471.00 (+0.39%) | $78,357 (-11.33%) Land $65,794 Building $12,563 | $1,253,700 (-4.95%) Land $1,052,700 Building $201,000 |
| 2024 | $7,442.00 (+1.76%) | ||
| 2023 | $7,313.00 (+18.93%) | $88,373 (+33.46%) Land $71,804 Building $16,569 | $1,319,000 (+38.43%) Land $1,071,700 Building $247,300 |
| 2022 | $6,149.00 | $66,219 Land $57,525 Building $8,694 | $952,800 Land $827,700 Building $125,100 |
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