Boulder County property record for 728 12th St, Boulder, CO 80302 · Last verified June 2026
| Property Type | Residential > Single Family > Home |
|---|---|
| Bedrooms | 4 Beds |
| Bathrooms | 2.75 Baths |
| Year Built | Built 1975 |
| Square Footage | 3,310 sqft Living Area |
| Lot Size | 9,841 sqft (0.226 acres) |
| Occupancy | Owner Occupied |
| Last Sale | $309,000 (1991) |
| Tax Bill | $9,653.00 (2025) |
| Primary APN | 1463-31-3-31-006 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 2.75 Baths |
| Partial Baths | 1 Partial Baths |
| Total Rooms | 12 Rooms |
| Building Area | 3,310 sqft Living Area |
| Gross Area | 4,115 sqft Gross Area |
| 1st Floor | 1,920 sqft 1st Floor |
| Basement Area | 1,920 sqft Basement |
| Finished Basement | 1,390 sqft Finished |
| Unfinished Basement | 530 sqft Unfinished |
| Stories | 1 Stories |
| Interior Structure | Plaster Interior Structure |
| Year Built | Built 1925 |
|---|---|
| Effective Year Built | Effective 1975 |
| Architectural Style | Ranch Style |
| Exterior Material | Combination Exterior |
| Construction Type | Masonry/Concrete Masonry Units (CMUs) Construction |
| Roof Material | Asphalt Roof |
| Lot Area | 9,841 sqft (0.226 acres) |
| Parking Spaces | 1 Parking Spaces |
| Garage Type | Attached Garage |
| Garage Area | 275 sqft Garage |
| Deck Area | 380 sqft Deck |
| Porch | Porch |
| Porch Area | 140 sqft Porch |
| Heating System | Hot Water Heating |
|---|
| Account Number | R0001633 |
|---|---|
| Street Address | 728 12TH ST |
| City | BOULDER |
| State | CO |
| Zip | 80302-7519 |
| Property Usage | Residential Property Usage |
| Type | Residential > Single Family > Home |
| Legal Description | LOTS 16-17-18 & LOT 19 LESS SLY 22 FT BLK 33 UNIVERSITY PLACE |
| Legal Range | 70 |
| Legal Township | 1N |
| Legal Section | 31 |
| Legal Subdivision | UNIVERSITY PLACE - BO |
| Legal Block | 33 |
| Legal Lot Number | 16 |
| Jurisdiction | BOULDER CO |
| Minor Civil Division | BOULDER |
| Census Blockgroup | 3 |
| Census Block | 3011 |
| Census Tract | 12401 |
Source: Boulder County records · APN 1463-31-3-31-006
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 | 728 12TH ST, BOULDER, CO 80302-7519 |
| Occupancy | Owner Occupied |
| Owner Type | Owner is an Individual, Couple or Unincorporated Entity |
| Vesting | Tenants In Common |
| Deed Names | 2 Verified Names on Deed |
|---|---|
| Known Transactions |
|
| Deed Doc Number | 19911082078 |
| Last Transfer Date | Apr 18, 2013 |
| Transfer Doc | 0003305798 |
| 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 | $116,954 (+8.8%) Land $75,222 Building $41,732 | $1,719,900 (-) Land $1,106,200 Building $613,700 | |
| 2025 | $9,653.00 (+10.95%) | $107,494 (-3.27%) Land $69,138 Building $38,356 | $1,719,900 (+3.69%) Land $1,106,200 Building $613,700 |
| 2023 | $8,700.00 (+7.78%) | $111,133 (+18.38%) Land $70,444 Building $40,689 | $1,658,700 (+22.79%) Land $1,051,400 Building $607,300 |
| 2022 | $8,072.00 | $93,881 Land $57,720 Building $36,161 | $1,350,800 Land $830,500 Building $520,300 |
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