Boulder County property record for 3145 10th St, Boulder, CO 80304
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 3 ba · 2,221 sqft · built 1899 |
| Lot Size | 0.176 acres (7,677 sqft) |
| Owner | Trust Name on File |
| Last Sale | $218,500 (Nov 1994) |
| Tax Bill | $12,081 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 1461-24-4-10-018 |
| Primary APN | 1461-24-4-10-018 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 3 Baths |
| Half Baths | 2 Half Baths |
| Total Rooms | 9 Rooms |
| Stories | 2 Stories |
| Building Area | 2,221 sqft Living Area |
| Gross Area | 3,263 sqft |
| 1st Floor Area | 1,161 sqft |
| Upper Floors Area | 1,060 sqft |
| Basement Area | 1,042 sqft |
| Interior Walls | Wallboard/Drywall |
| Year Built | Built 1899 |
|---|---|
| Effective Year Built | Effective 1980 |
| Architectural Style | A-Frame |
| Exterior Material | Wood Shingle |
| Construction Type | Frame |
| Roof Material | Asphalt |
| Lot Area | 7,677 sqft (0.176 acres) |
| Garage Type | Detached |
| Garage Area | 374 sqft |
| Parking Spaces | 1 Parking Space |
| Porch | Porch |
| Porch Area | 283 sqft |
| Total Buildings | 2 Buildings |
| Heating System | Forced Air with A/C |
|---|
| Account Number | R0005071 |
|---|---|
| Street Address | 3145 10TH ST |
| City | BOULDER |
| State | CO |
| Zip | 80304-2523 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | LOTS 39-40 & N 10 FT LOT 38 BLK 11 NEWLANDS |
| Legal Range | 71 |
| Legal Township | 1N |
| Legal Section | 24 |
| Legal Subdivision | NEWLANDS - BO |
| Legal Block | 11 |
| Legal Lot Number | 39 |
| Jurisdiction | BOULDER CO |
| Township / Civil Division | BOULDER |
| Census Block Group | 2 |
| Census Block | 2021 |
| Census Tract | 12101 |
3145 10th St is owner-occupied and held in a trust since May 2006.
Source: Boulder County records, as of September 18, 2026
| Owner of Record | Trust Name on File |
|---|---|
| Mailing Address | 3145 10TH ST, BOULDER, CO 80304-2523 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | Trust, Living 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 | Nov 18, 1994 · Amount on File |
| Deed Sale | Nov 18, 1994 · Amount on File |
| Prior Sale | Dec 15, 1993 · Amount on File |
| Deed Document Number | 19941479661 |
| Last Transfer Date | May 2, 2006 |
| Transfer Doc | 0002774781 |
| Record Updated | Oct 29, 2026 |
The 2025 property tax bill for 3145 10th St was $12,081.
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 | $139,896 (+5.22%) Land $98,620 Building $41,276 | $2,127,300 (-) Land $1,520,300 Building $607,000 | |
| 2025 | $12,081.00 | $132,957 Land $95,019 Building $37,938 | $2,127,300 Land $1,520,300 Building $607,000 |
| 2023 | $12,412.00 (+28.01%) | $154,114 (+38.38%) Land $105,311 Building $48,803 | $2,300,200 (+43.55%) Land $1,571,800 Building $728,400 |
| 2022 | $9,696.00 | $111,367 Land $75,630 Building $35,737 | $1,602,400 Land $1,088,200 Building $514,200 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 3145 10th St in Zone X, an area of minimal flood risk, though there have been 25 flood claims nearby since 1990.
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 |
| Flood Insurance Cost | Premium on File median of 63 policies |
| Community Rating System | Class 5 (25% premium discount) |
| Nearby Flood Policies | 63 in force |
| Nearby Flood Claims | 25 (1990–2026) |
| Claims Outside the SFHA | 17 of 25 |
| Most Recent Claim | Jun 2026 · rainfall accumulation |
| Claims by Event |
|
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 3145 10th St is low, with a 0.05% 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 | 0.05% 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 596 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 |
| AT&T Fixed Wireless | 100 / 20 |
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