Boulder County property record for 4156 15th St, Boulder, CO 80304
| Property Type | Single Family Home |
|---|---|
| Details | 5 bd · 2.5 ba · 3,076 sqft · built 1993 |
| Lot Size | 0.341 acres (14,855 sqft) |
| Owner | Company Name on Record |
| Last Sale | $1,950,000 (Jul 2025) |
| Tax Bill | $11,583 (2025) |
| Deeds & Mortgages | Aug 2020 Line of Credit Feb 2020 Transfer |
| Flood Zone | Zone X (moderate risk) |
| APN | 1463-18-3-46-003 |
| Primary APN | 1463-18-3-46-003 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 5 Beds |
|---|---|
| Full Baths | 2.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 9 Rooms |
| Stories | 2 Stories |
| Building Area | 3,076 sqft Living Area |
| Gross Area | 3,796 sqft |
| 1st Floor Area | 1,754 sqft |
| Upper Floors Area | 1,322 sqft |
| Interior Walls | Wallboard/Drywall |
| Year Built | Built 1993 |
|---|---|
| Effective Year Built | Effective 2005 |
| Architectural Style | A-Frame |
| Exterior Material | Combination |
| Construction Type | Frame |
| Roof Material | Asphalt |
| Lot Area | 14,855 sqft (0.341 acres) |
| Garage Type | Attached |
| Garage Area | 720 sqft |
| Parking Spaces | 3 Parking Spaces |
| Patio Area | 180 sqft |
| Cooling System | Central |
|---|---|
| Heating System | Forced Air with A/C |
| Account Number | R0109857 |
|---|---|
| Street Address | 4156 15TH ST |
| City | BOULDER |
| State | CO |
| Zip | 80304-1123 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | LOT 3 NIMBUS SUBDIVISION |
| Legal Range | 70 |
| Legal Township | 1N |
| Legal Section | 18 |
| Legal Subdivision | NIMBUS SUBDIVISION - BO |
| Legal Block | 3 |
| Legal Lot Number | 3 |
| Jurisdiction | BOULDER CO |
| Township / Civil Division | BOULDER |
| Census Block Group | 3 |
| Census Block | 3000 |
| Census Tract | 12105 |
Source: Boulder County records, as of June 15, 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 | 4156 15TH ST, BOULDER, CO 80304-1123 |
| Owner Type | Company |
| Vesting | Life Tenant |
| Date | Document |
|---|---|
| Aug 27, 2020 | Deed of Trust, Mortgage · Line of Credit FIRSTBANK |
| Feb 10, 2020 | Quit Claim Deed, Transfer NOT AVAILABLE |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Jul 17, 2025 · Amount on Record |
| Deed Sale | Jul 17, 2025 · Amount on Record |
| Prior Sale | Jun 17, 2010 · Amount on Record |
| Deed Document Number | 20254095283 |
| Prior Transfer Date | Mar 20, 2018 |
| Prior Transfer Doc | 0003765152 |
| Record Updated | Sep 20, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | BOULDER CO |
| Property Address | 4156 15TH ST, BOULDER, CO 80304-1123 |
| Transaction Type | Mortgage |
| Record Updated | Feb 5, 2021 |
| Name | Verified Name |
|---|
| Document Number | 0003810509 |
|---|---|
| Date | Aug 27, 2020 |
| Instrument | 3810509 |
| Name | FIRSTBANK |
|---|---|
| Type | Bank |
| Address | DENVER, CO 80215 |
| Type | Line of Credit |
|---|---|
| Amount | Amount Recorded |
| Term | 120 Months |
| Due | Aug 10, 2030 |
| Rate Type | Adjustable Rate |
|---|---|
| Change Frequency | Monthly |
| Document Type | Quit Claim Deed |
|---|---|
| Jurisdiction | BOULDER CO |
| Recording Date | Feb 10, 2020 |
| Property Address | 4156 15TH ST, BOULDER, CO 80304-1123 |
| Document Number | 0003765152 |
| Instrument Date | Mar 20, 2018 |
| Instrument | 3765152 |
| Transaction Type | Transfer |
| Record Updated | Feb 25, 2020 |
| Title Company | NOT AVAILABLE |
| Tax | $0.00 |
|---|---|
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Personal Trust |
| Address | 4156 15TH ST BOULDER CO 803041123, BOULDER, CO 80304-1123 |
Source: Boulder County assessment roll, as of June 15, 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 | $132,178 (+8.8%) Land $68,571 Building $63,607 | $1,943,800 (-) Land $1,008,400 Building $935,400 | |
| 2025 | $11,583.00 (-0.98%) | $121,488 (-11.19%) Land $63,025 Building $58,463 | $1,943,800 (-4.8%) Land $1,008,400 Building $935,400 |
| 2024 | $11,698.00 (+1.77%) | ||
| 2023 | $11,495.00 (+19.37%) | $136,794 (+31.91%) Land $64,742 Building $72,052 | $2,041,700 (+36.83%) Land $966,300 Building $1,075,400 |
| 2022 | $9,630.00 | $103,701 Land $52,222 Building $51,479 | $1,492,100 Land $751,400 Building $740,700 |
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 moderate risk |
|---|---|
| 500-Year Floodplain | Yes 0.2% annual chance |
| Nearest Special Flood Hazard Area | Zone AE, within 100 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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