Boulder County property record for 315 28th St, Boulder, CO 80305
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 2 ba · 1,944 sqft · built 1954 |
| Lot Size | 0.153 acres (6,665 sqft) |
| Owner | Individual Name on File |
| Last Sale | $46,300 (Oct 1993) |
| Tax Bill | $4,493 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 1577-05-2-04-023 |
| Primary APN | 1577-05-2-04-023 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 8 Rooms |
| Stories | 2 Stories |
| Building Area | 1,944 sqft Living Area |
| Gross Area | 2,020 sqft |
| 1st Floor Area | 1,564 sqft |
| Upper Floors Area | 380 sqft |
| Interior Walls | Wallboard/Drywall |
| Year Built | Built 1954 |
|---|---|
| Effective Year Built | Effective 1971 |
| Architectural Style | A-Frame |
| Exterior Material | Wood Shingle |
| Construction Type | Frame |
| Roof Material | Asphalt |
| Lot Area | 6,665 sqft (0.153 acres) |
| Porch | Enclosed Porch |
| Porch Area | 136 sqft |
| Deck Area | 60 sqft |
| Heating System | Forced Air with A/C |
|---|
| Account Number | R0006766 |
|---|---|
| Street Address | 315 28TH ST |
| City | BOULDER |
| State | CO |
| Zip | 80305-3311 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | LOT 23 BLK 3 HIGHLAND PARK |
| Legal Range | 70 |
| Legal Township | 1S |
| Legal Section | 05 |
| Legal Subdivision | HIGHLAND PARK - BO |
| Legal Block | 3 |
| Legal Lot Number | 23 |
| Jurisdiction | BOULDER CO |
| Township / Civil Division | BOULDER |
| Census Block Group | 2 |
| Census Block | 2013 |
| Census Tract | 12507 |
315 28th St is owned and occupied by an individual who bought it in October 1993.
Source: Boulder County records, as of September 18, 2026
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Owner of Record | Individual Name on File |
|---|---|
| Mailing Address | 315 28TH ST, BOULDER, CO 80305-3311 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Oct 4, 1993 · Amount on File |
| Deed Sale | Oct 4, 1993 · Amount on File |
| Prior Sale | May 19, 1992 |
| Deed Document Number | 19931344017 |
| Transfer Doc | 0001344017 |
| Record Updated | Oct 29, 2026 |
The 2025 property tax bill for 315 28th St was $4,493.
Source: Boulder County assessment roll, as of September 18, 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 | $53,312 (-0.12%) Land $25,500 Building $27,812 | $854,000 (-) Land $445,000 Building $409,000 | |
| 2025 | $4,493.00 | $53,376 Land $27,813 Building $25,563 | $854,000 Land $445,000 Building $409,000 |
| 2023 | $4,473.00 (+14.37%) | $62,189 (+26.74%) Land $32,716 Building $29,473 | $928,200 (+31.47%) Land $488,300 Building $439,900 |
| 2022 | $3,911.00 | $49,067 Land $24,777 Building $24,290 | $706,000 Land $356,500 Building $349,500 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 315 28th St in Zone X, an area of minimal flood risk, though there have been 1 flood claim nearby since 2013.
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 | 9 in force |
| Nearby Flood Claims | 1 (2013) |
| Claims Outside the SFHA | 1 of 1 |
| Most Recent Claim | Sep 2013 · Severe Storms, Flooding, Landslides, And Mudslides |
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.
Wildfire risk around 315 28th St is low, with a 0.03% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 64% of the US · lower than 81% of Colorado |
|---|---|
| Wildfire Likelihood | 0.03% annual chance |
| Exposure | None beyond ember reach |
Values cover an area roughly 900 ft across, not the parcel itself; insurers use their own ratings.
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 294 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Ayva Networks Fixed Wireless | 2,500 / 2,500 |
| CenturyLink Fiber | 2,000 / 1,000 |
| Xfinity Cable | 2,000 / 250 |
| Verizon Fixed Wireless | 300 / 20 |
| LiveWireNet Fixed Wireless | 250 / 100 |
| T-Mobile Fixed Wireless | 100 / 20 |
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