Boulder County property record for 310 31st St, Boulder, CO 80305
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 1.75 ba · 1,349 sqft · built 1954 |
| Lot Size | 0.161 acres (7,003 sqft) |
| Owner | Individual Name on Record |
| Last Sale | $150,000 (Aug 1994) |
| Tax Bill | $5,355 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 1577-05-2-14-007 |
| Primary APN | 1577-05-2-14-007 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 1.75 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 6 Rooms |
| Stories | 1 Story |
| Building Area | 1,349 sqft Living Area |
| Gross Area | 1,609 sqft |
| 1st Floor Area | 1,349 sqft |
| Interior Walls | Wallboard/Drywall |
| Year Built | Built 1954 |
|---|---|
| Effective Year Built | Effective 1985 |
| Architectural Style | Ranch |
| Exterior Material | Wood Shingle |
| Construction Type | Frame |
| Roof Material | Asphalt |
| Lot Area | 7,003 sqft (0.161 acres) |
| Garage Type | Attached |
| Garage Area | 260 sqft |
| Parking Spaces | 1 Parking Space |
| Porch | Porch |
| Porch Area | 38 sqft |
| Deck Area | 272 sqft |
| Heating System | Forced Air with A/C |
|---|
| Account Number | R0003429 |
|---|---|
| Street Address | 310 31ST ST |
| City | BOULDER |
| State | CO |
| Zip | 80305-3405 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | LOT 8 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 | 8 |
| Jurisdiction | BOULDER CO |
| Township / Civil Division | BOULDER |
| Census Block Group | 2 |
| Census Block | 2006 |
| Census Tract | 12507 |
Source: Boulder County records, as of September 18, 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | Individual Name on Record |
|---|---|
| Mailing Address | 1744 N PEARL ST, 300, DENVER, CO 80203-2103 |
| Owner Type | Individual |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Aug 5, 1994 · Amount on Record |
| Deed Sale | Aug 5, 1994 · Amount on Record |
| Prior Sale | Aug 3, 1988 · Amount on Record |
| Deed Document Number | 19941452577 |
| Last Transfer Date | Mar 17, 2003 |
| Transfer Doc | 0002415355 |
| Record Updated | Oct 29, 2026 |
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 | $55,434 (+0.2%) Land $26,255 Building $29,179 | $885,200 (-) Land $456,100 Building $429,100 | |
| 2025 | $5,355.00 (+2.16%) | $55,325 (-12.91%) Land $28,506 Building $26,819 | $885,200 (-6.63%) Land $456,100 Building $429,100 |
| 2023 | $5,242.00 (+12.66%) | $63,523 (+28.84%) Land $33,534 Building $29,989 | $948,100 (+33.65%) Land $500,500 Building $447,600 |
| 2022 | $4,653.00 | $49,303 Land $25,395 Building $23,908 | $709,400 Land $365,400 Building $344,000 |
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.
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.
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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