Boulder County property record for 4135 15th St, Boulder, CO 80304
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 3 ba · 2,674 sqft · built 1988 |
| Lot Size | 0.187 acres (8,152 sqft) |
| Owner | Company Name on Record |
| Tax Bill | $8,408 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 1463-18-3-31-006 |
| Primary APN | 1463-18-3-31-006 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 3 Baths |
| Total Rooms | 8 Rooms |
| Building Area | 2,674 sqft Living Area |
| Gross Area | 3,074 sqft |
| 1st Floor Area | 1,150 sqft |
| Upper Floors Area | 870 sqft |
| Basement Area | 654 sqft |
| Interior Walls | Wallboard/Drywall |
| Year Built | Built 1988 |
|---|---|
| Effective Year Built | Effective 1988 |
| Architectural Style | Split Level |
| Exterior Material | Wood Shake/Shingle |
| Construction Type | Frame |
| Lot Area | 8,152 sqft (0.187 acres) |
| Garage Type | Attached |
| Garage Area | 400 sqft |
| Parking Spaces | 2 Parking Spaces |
| Deck Area | 104 sqft |
| Cooling System | Central |
|---|---|
| Heating System | Forced Air with A/C |
| Account Number | R0090591 |
|---|---|
| Street Address | 4135 15TH ST |
| City | BOULDER |
| State | CO |
| Zip | 80304-1122 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | LOT 6 WONDERLAND CREEK |
| Legal Range | 70 |
| Legal Township | 1N |
| Legal Section | 18 |
| Legal Subdivision | WONDERLAND CREEK - BO |
| Legal Block | 3 |
| Legal Lot Number | 6 |
| Jurisdiction | BOULDER CO |
| Township / Civil Division | BOULDER |
| Census Block Group | 3 |
| Census Block | 3002 |
| Census Tract | 12105 |
Source: Boulder County records, as of October 16, 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | Company Name on Record |
|---|---|
| Mailing Address | 4135 15TH ST, BOULDER, CO 80304-1122 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | Trust, Revocable Trust |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Feb 23, 1993 |
| Deed Sale | Feb 23, 1993 |
| Prior Sale | Nov 5, 1991 |
| Deed Document Number | 19931267907 |
| Last Transfer Date | Jan 30, 2025 |
| Transfer Doc | 0004074815 |
| 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 | $97,988 (+3.76%) Land $47,627 Building $50,361 | $1,511,000 (-) Land $770,400 Building $740,600 | |
| 2025 | $8,408.00 (+1.26%) | $94,438 (-11.36%) Land $48,150 Building $46,288 | $1,511,000 (-4.97%) Land $770,400 Building $740,600 |
| 2023 | $8,303.00 (+19.99%) | $106,536 (+30.77%) Land $49,774 Building $56,762 | $1,590,100 (+35.65%) Land $742,900 Building $847,200 |
| 2022 | $6,920.00 | $81,468 Land $40,157 Building $41,311 | $1,172,200 Land $577,800 Building $594,400 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
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 AE, within 500 ft |
| Flood Insurance Requirement | Not required lenders may require it |
| Flood Insurance Cost | Premium on Record median of 32 policies |
| Community Rating System | Class 5 (25% premium discount) |
| Nearby Flood Policies | 32 in force |
| Nearby Flood Claims | 26 (2005–2015) |
| Claims Outside the SFHA | 10 of 26 |
| Most Recent Claim | May 2015 · Severe Storms, Tornadoes, 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 | Low lower than 63% of the US · lower than 80% of Colorado |
|---|---|
| Wildfire Likelihood | 0.08% 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 460 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Ayva Networks Fixed Wireless | 2,500 / 2,500 |
| Xfinity Cable | 2,000 / 250 |
| LiveWireNet Fixed Wireless | 250 / 100 |
| T-Mobile Fixed Wireless | 100 / 20 |
May also be available: AT&T, CenturyLink.
5G (outdoors only) and 4G LTE
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