Boulder County property record for 330 31st St, Boulder, CO 80305
| Property Type | Single Family Home |
|---|---|
| Details | 2 bd · 1 ba · 988 sqft · built 1955 |
| Lot Size | 0.159 acres (6,915 sqft) |
| Owner | Trust Name on File |
| Last Sale | $310,000 (Aug 2006) |
| Tax Bill | $4,333 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 1577-05-2-14-005 |
| Primary APN | 1577-05-2-14-005 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 2 Beds |
|---|---|
| Full Baths | 1 Bath |
| Total Rooms | 5 Rooms |
| Stories | 1 Story |
| Building Area | 988 sqft Living Area |
| Gross Area | 1,248 sqft |
| 1st Floor Area | 988 sqft |
| Interior Walls | Wallboard/Drywall |
| Year Built | Built 1955 |
|---|---|
| Effective Year Built | Effective 1970 |
| Architectural Style | Ranch |
| Exterior Material | Wood Shingle |
| Construction Type | Frame |
| Roof Material | Asphalt |
| Lot Area | 6,915 sqft (0.159 acres) |
| Garage Type | Attached |
| Garage Area | 260 sqft |
| Parking Spaces | 1 Parking Space |
| Porch | Porch |
| Porch Area | 200 sqft |
| Heating System | Forced Air with A/C |
|---|
| Account Number | R0007786 |
|---|---|
| Street Address | 330 31ST ST |
| City | BOULDER |
| State | CO |
| Zip | 80305-3405 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | LOT 6 BLK 12 HIGHLAND PARK 2 |
| Legal Range | 70 |
| Legal Township | 1S |
| Legal Section | 05 |
| Legal Subdivision | HIGHLAND PARK 2 - BO |
| Legal Block | 12 |
| Legal Lot Number | 6 |
| Jurisdiction | BOULDER CO |
| Township / Civil Division | BOULDER |
| Census Block Group | 2 |
| Census Block | 2006 |
| Census Tract | 12507 |
330 31st St is held in a trust since August 2006.
Source: Boulder County records, as of September 18, 2026
| Owner of Record | Trust Name on File |
|---|---|
| Mailing Address | 220 31ST ST, BOULDER, CO 80305-3461 |
| Owner Type | Company |
| Vesting | Trust, Revocable Trust |
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Aug 7, 2006 · Amount on File |
| Deed Sale | Aug 7, 2006 · Amount on File |
| Prior Sale | Nov 7, 1994 · Amount on File |
| Deed Document Number | 20062796271 |
| Prior Transfer Date | Jan 10, 2005 |
| Prior Transfer Doc | 0002659132 |
| Record Updated | Oct 29, 2026 |
The 2025 property tax bill for 330 31st St was $4,333.
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 | $43,772 (-1.87%) Land $26,058 Building $17,714 | $713,700 (-) Land $453,200 Building $260,500 | |
| 2025 | $4,333.00 | $44,606 Land $28,325 Building $16,281 | $713,700 Land $453,200 Building $260,500 |
| 2023 | $4,234.00 (+10.12%) | $51,845 (+27.69%) Land $33,319 Building $18,526 | $773,800 (+32.45%) Land $497,300 Building $276,500 |
| 2022 | $3,845.00 | $40,601 Land $25,235 Building $15,366 | $584,200 Land $363,100 Building $221,100 |
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.
FEMA maps place 330 31st St in Zone X, an area of minimal flood risk, within 500 ft of a high-risk flood zone.
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 |
|---|---|
| Nearest Special Flood Hazard Area | Zone AH, within 500 ft |
| 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 330 31st St is low, with a 0.02% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 67% of the US · lower than 84% of Colorado |
|---|---|
| Wildfire Likelihood | 0.02% 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 451 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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