Boulder County property record for 4306 6th St, Boulder, CO 80304 · Last verified August 2026
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 3.5 ba · 3,427 sqft · built 1991 |
| Lot Size | 0.163 acres (7,087 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $890,000 (Sep 2014) |
| Tax Bill | $9,616 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 1461-13-1-02-001 |
| Primary APN | 1461-13-1-02-001 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 3.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 9 Rooms |
| Stories | 2 Stories |
| Building Area | 3,427 sqft Living Area |
| Gross Area | 4,007 sqft |
| 1st Floor Area | 1,215 sqft |
| Upper Floors Area | 1,133 sqft |
| Basement Area | 1,199 sqft |
| Finished Basement | 1,079 sqft |
| Unfinished Basement | 120 sqft |
| Interior Walls | Wallboard/Drywall |
| Year Built | Built 1991 |
|---|---|
| Effective Year Built | Effective 1991 |
| Architectural Style | A-Frame |
| Exterior Material | Wood Shingle |
| Construction Type | Frame |
| Roof Material | Asphalt |
| Lot Area | 7,087 sqft (0.163 acres) |
| Garage Type | Attached |
| Garage Area | 460 sqft |
| Parking Spaces | 2 Parking Spaces |
| Deck Area | 143 sqft |
| Cooling System | Central |
|---|---|
| Heating System | Forced Air with A/C |
| Account Number | R0033963 |
|---|---|
| Street Address | 4306 6TH ST |
| City | BOULDER |
| State | CO |
| Zip | 80304-0535 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | LOT 1 WEST UNION |
| Legal Range | 71 |
| Legal Township | 1N |
| Legal Section | 13 |
| Legal Subdivision | WEST UNION SUB |
| Legal Block | 1 |
| Legal Lot Number | 1 |
| Jurisdiction | BOULDER CO |
| Township / Civil Division | BOULDER |
| Census Block Group | 1 |
| Census Block | 1008 |
| Census Tract | 12104 |
Source: Boulder County records · APN 1461-13-1-02-001
Assessment roll updated June 15, 2026 · Last verified August 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 4306 6TH ST, BOULDER, CO 80304-0535 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Deed Names | 2 Verified Names on Deed |
|---|---|
| Last Sale | Sep 08, 2014 · Amount on Record |
| Deed Sale | Sep 08, 2014 · Amount on Record |
| Prior Sale | Feb 25, 2009 · Amount on Record |
| Deed Document Number | 20143401479 |
| Prior Transfer Date | Apr 17, 2001 |
| Prior Transfer Doc | 0002147132 |
| Record Updated | Sep 20, 2026 |
Source: Boulder County records · Assessment roll updated June 15, 2026 · Last verified August 2026
| Type | Name |
|---|---|
| State | Colorado |
| County | Boulder County |
| Municipality | Boulder City |
| Unified School District | Boulder Valley School District RE-2 (PK - 12) |
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.
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $109,732 (+8.8%) Land $68,218 Building $41,514 | $1,613,700 (-) Land $1,003,200 Building $610,500 | |
| 2025 | $9,616.00 (+1.47%) | $100,856 (-11.09%) Land $62,700 Building $38,156 | $1,613,700 (-4.68%) Land $1,003,200 Building $610,500 |
| 2023 | $9,477.00 (+19.49%) | $113,431 (+32.81%) Land $68,427 Building $45,004 | $1,693,000 (+37.77%) Land $1,021,300 Building $671,700 |
| 2022 | $7,931.00 | $85,409 Land $54,822 Building $30,587 | $1,228,900 Land $788,800 Building $440,100 |
Source: FEMA National Flood Hazard Layer, Boulder County (08013C), updated October 14, 2026 · FEMA OpenFEMA NFIP redacted claims and policies, census block group 080130121041, refreshed September 2026 · USDA Forest Service Wildfire Risk to Communities, 2nd edition (2024), fuels as of 2020 · Last verified October 2026
| FEMA Flood Zone | Zone X |
|---|---|
| Special Flood Hazard Area | No |
| Flood Hazard | Minimal |
| 500-Year Floodplain | No |
| Flood Insurance Cost | Premium on Record median of 58 individual NFIP policies nearby |
| Community Rating System | Class 5 (25% premium discount) |
| Nearby Flood Policies | 63 units insured 5 under condo master policies |
| Nearby Flood Claims | 14 (2013–2015) |
| Claims Outside the SFHA | 6 of 14 |
| Most Recent Claim | May 2015, other causes, Severe Storms, Tornadoes, Flooding, Landslides, And Mudslides |
| Claims By Storm |
|
| Wildfire Risk | High above 82% of the US · above 84% of Colorado |
|---|---|
| Wildfire Likelihood | About 1 in 156 per year |
| Exposure | Direct burnable vegetation at the parcel |
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: FCC Broadband Data Collection, availability as of December 31, 2025 · Published October 2026 · based on 222 locations within about half a mile of this property
| Provider | Technology | Download / Upload (Mbps) |
|---|---|---|
| Ayva | Fixed Wireless (unlicensed) | 2,500 / 2,500 |
| Xfinity | Cable | 2,000 / 250 |
| Live Wire Networks | Fixed Wireless (licensed-by-rule) | 250 / 100 |
| Lumen Technologies | DSL | 140 / 20 |
| T-Mobile USA | Fixed Wireless | 100 / 20 |
Availability varies by address; speeds are provider-advertised maximums, not measured.
5G and 4G LTE
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