Boulder County property record for 2305 4th St, Boulder, CO 80302
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 3.5 ba · 3,819 sqft · built 1922 |
| Lot Size | 0.26 acres (11,334 sqft) |
| Owner | 2 Individual Names on Record |
| Last Sale | $1,065,000 (May 2004) |
| Tax Bill | $17,426 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 1461-25-3-04-010 |
| Primary APN | 1461-25-3-04-010 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 3.5 Baths |
| Half Baths | 2 Half Baths |
| Total Rooms | 9 Rooms |
| Stories | 2 Stories |
| Building Area | 3,819 sqft Living Area |
| Gross Area | 4,329 sqft |
| 1st Floor Area | 1,734 sqft |
| Upper Floors Area | 1,445 sqft |
| Basement Area | 1,150 sqft |
| Finished Basement | 640 sqft |
| Unfinished Basement | 510 sqft |
| Interior Walls | Plaster |
| Year Built | Built 1922 |
|---|---|
| Effective Year Built | Effective 1975 |
| Exterior Material | Combination |
| Construction Type | Masonry / Concrete Block |
| Roof Material | Asphalt |
| Lot Area | 11,334 sqft (0.26 acres) |
| Garage Type | Detached |
| Garage Area | 380 sqft |
| Parking Spaces | 1 Parking Space |
| Porch | Porch |
| Porch Area | 234 sqft |
| Deck Area | 1,438 sqft |
| Cooling System | Central |
|---|---|
| Heating System | Forced Air with A/C |
| Account Number | R0000607 |
|---|---|
| Street Address | 2305 4TH ST |
| City | BOULDER |
| State | CO |
| Zip | 80302-4711 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | LOTS 20-21 & N 10 FT LOT 22 & LOT 34 LESS TRI ON N & S BLK 1 MAPLETON PARK |
| Legal Range | 71 |
| Legal Township | 1N |
| Legal Section | 25 |
| Legal Subdivision | MAPLETON PARK - BO |
| Legal Block | 1 |
| Legal Lot Number | 20 |
| Jurisdiction | BOULDER CO |
| Township / Civil Division | BOULDER |
| Census Block Group | 1 |
| Census Block | 1015 |
| Census Tract | 12101 |
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 | 2 Individual Names on Record |
|---|---|
| Mailing Address | 2305 4TH ST, BOULDER, CO 80302-4711 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | May 17, 2004 · Amount on Record |
| Deed Sale | May 17, 2004 · Amount on Record |
| Prior Sale | Jan 2, 1986 · Amount on Record |
| Deed Document Number | 20042587732 |
| 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 | $200,886 (+6.28%) Land $137,626 Building $63,260 | $3,024,200 (-) Land $2,093,900 Building $930,300 | |
| 2025 | $17,426.00 (+4.15%) | $189,013 (-7.41%) Land $130,869 Building $58,144 | $3,024,200 (-0.74%) Land $2,093,900 Building $930,300 |
| 2023 | $16,732.00 (+11.62%) | $204,135 (+21.24%) Land $132,097 Building $72,038 | $3,046,800 (+25.76%) Land $1,971,600 Building $1,075,200 |
| 2022 | $14,990.00 | $168,377 Land $100,177 Building $68,200 | $2,422,700 Land $1,441,400 Building $981,300 |
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 |
|---|---|
| Nearest Special Flood Hazard Area | Zone A, within 500 ft |
| Flood Insurance Requirement | Not required lenders may require it |
| Flood Insurance Cost | Premium on Record median of 12 individual policies |
| Community Rating System | Class 5 (25% premium discount) |
| Nearby Flood Policies | 16 units insured incl. 4 condo units |
| Nearby Flood Claims | 3 (2013) |
| Claims Outside the SFHA | 3 of 3 |
| Most Recent Claim | Sep 2013 · Severe Storms, Flooding, Landslides, And Mudslides |
| 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.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | High above 82% of the US · above 85% of Colorado |
|---|---|
| Wildfire Likelihood | 0.8% annual chance |
| Exposure | Direct burnable vegetation |
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 684 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 · DSL in parts of the area | 2,000 / 1,000 |
| Xfinity Cable | 2,000 / 250 |
| LiveWireNet Fixed Wireless | 250 / 100 |
| T-Mobile Fixed Wireless | 100 / 20 |
| AT&T Fixed Wireless | 100 / 20 |
May also be available: Verizon.
Search by:
By searching, you agree to: Terms • Privacy • Disclosures