Boulder County property record for 1045 12th St, Boulder, CO 80302
| Property Type | Multi-Family Dwellings |
|---|---|
| Details | 11 bd · 6 ba · 5,058 sqft · built 1906 |
| Lot Size | 0.143 acres (6,232 sqft) |
| Owner | Company Name on File |
| Last Sale | $200,000 (Apr 1991) |
| Tax Bill | $14,492 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 1463-31-3-07-017 |
| Primary APN | 1463-31-3-07-017 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 11 Beds |
|---|---|
| Full Baths | 6 Baths |
| Total Rooms | 18 Rooms |
| Units | 2 Units |
| Stories | 2 Stories |
| Building Area | 5,058 sqft Living Area |
| 1st Floor Area | 1,594 sqft |
| Upper Floors Area | 2,904 sqft |
| Basement Area | 560 sqft |
| Finished Basement | 560 sqft |
| Interior Walls | Wallboard/Drywall |
| Year Built | Built 1906 |
|---|---|
| Effective Year Built | Effective 1985 |
| Architectural Style | A-Frame |
| Exterior Material | Wood Shingle |
| Construction Type | Masonry / Concrete Block |
| Lot Area | 6,232 sqft (0.143 acres) |
| Porch | Porch |
| Porch Area | 221 sqft |
| Deck Area | 638 sqft |
| Heating System | Forced Air with A/C |
|---|
| Account Number | R0009197 |
|---|---|
| Street Address | 1045 12TH ST |
| City | BOULDER |
| State | CO |
| Zip | 80302-7285 |
| Property Category | Residential |
| Property Type | Residential > Multi-Unit > Multi-Family Dwellings |
| Legal Description | LOTS 35-36 BLK 5 UNIVERSITY PLACE |
| Legal Range | 70 |
| Legal Township | 1N |
| Legal Section | 31 |
| Legal Subdivision | UNIVERSITY PLACE - BO |
| Legal Block | 5 |
| Legal Lot Number | 35 |
| Jurisdiction | BOULDER CO |
| Township / Civil Division | BOULDER |
| Census Block Group | 4 |
| Census Block | 4003 |
| Census Tract | 12401 |
Source: Boulder County assessment roll, as of June 15, 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 | 1310 COLLEGE AVE, 310, BOULDER, CO 80302-7324 |
| Owner Type | Company |
| Vesting | Company |
| Deed Names | Verified Name on Deed |
|---|---|
| Last Sale | Apr 2, 1991 · Amount on Record |
| Deed Sale | Apr 2, 1991 · Amount on Record |
| Prior Sale | Dec 3, 1980 · Amount on Record |
| Deed Document Number | 19911095213 |
| Record Updated | Sep 20, 2026 |
Source: Boulder County assessment roll, as of June 15, 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 | $162,608 (+8.8%) Land $59,860 Building $102,748 | $2,391,300 (-) Land $880,300 Building $1,511,000 | |
| 2025 | $14,492.00 (+4.73%) | $149,457 (-7.35%) Land $55,019 Building $94,438 | $2,391,300 (-0.68%) Land $880,300 Building $1,511,000 |
| 2023 | $13,837.00 (+18.11%) | $161,309 (+30.37%) Land $56,059 Building $105,250 | $2,407,600 (+32.31%) Land $836,700 Building $1,570,900 |
| 2022 | $11,715.00 | $123,732 Land $44,934 Building $78,798 | $1,819,600 Land $660,800 Building $1,158,800 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
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 |
| Community Rating System | Class 5 (25% premium discount) |
| Nearby Flood Policies | 1 in force |
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.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 65% of the US · lower than 82% of Colorado |
|---|---|
| Wildfire Likelihood | 0.04% annual chance |
| Exposure | None beyond ember reach |
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 367 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Ayva Fixed Wireless | 2,500 / 2,500 |
| Lumen Technologies Fiber · DSL in parts of the area | 2,000 / 1,000 |
| Xfinity Cable | 2,000 / 250 |
| Verizon Fixed Wireless | 300 / 20 |
| Live Wire Networks Fixed Wireless | 250 / 100 |
| T-Mobile USA Fixed Wireless | 100 / 20 |
May also be available: AT&T, Magnolia Road Internet Cooperative.
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