Boulder County property record for 3900 Darley Ave, Boulder, CO 80305
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 1.75 ba · 1,580 sqft · built 1962 |
| Lot Size | 0.166 acres (7,235 sqft) |
| Owner | Company Name on File |
| Last Sale | $169,000 (Jun 1993) |
| Tax Bill | $6,608 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 1577-08-1-16-008 |
| Primary APN | 1577-08-1-16-008 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 1.75 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 7 Rooms |
| Building Area | 1,580 sqft Living Area |
| Gross Area | 3,730 sqft |
| 1st Floor Area | 1,052 sqft |
| Basement Area | 1,008 sqft |
| Finished Basement | 528 sqft |
| Unfinished Basement | 480 sqft |
| Interior Walls | Wallboard/Drywall |
| Year Built | Built 1962 |
|---|---|
| Effective Year Built | Effective 1990 |
| Architectural Style | Split Level |
| Exterior Material | Brick Veneer |
| Construction Type | Masonry / Concrete Block |
| Roof Material | Asphalt |
| Lot Area | 7,235 sqft (0.166 acres) |
| Garage Type | Attached |
| Garage Area | 446 sqft |
| Parking Spaces | 2 Parking Spaces |
| Porch | Enclosed Porch |
| Porch Area | 1,224 sqft |
| Heating System | Hot Water |
|---|
| Account Number | R0010383 |
|---|---|
| Street Address | 3900 DARLEY AVE |
| City | BOULDER |
| State | CO |
| Zip | 80305-6519 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | LOT 8 BLK 6 MOUNTAIN TERRACE |
| Legal Range | 70 |
| Legal Township | 1S |
| Legal Section | 08 |
| Legal Subdivision | MOUNTAIN TERRACE - BO |
| Legal Block | 6 |
| Legal Lot Number | 8 |
| Jurisdiction | BOULDER CO |
| Township / Civil Division | BOULDER |
| Census Block Group | 1 |
| Census Block | 1010 |
| Census Tract | 12509 |
3900 Darley Ave is owned by a company that acquired it in June 2014.
Source: Boulder County records, as of September 18, 2026
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Owner of Record | Company Name on File |
|---|---|
| Mailing Address | 3900 DARLEY AVE, BOULDER, CO 80305-6519 |
| Owner Type | Company |
| Vesting | Borrower in Default |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Jun 18, 1993 · Amount on File |
| Deed Sale | Jun 18, 1993 · Amount on File |
| Prior Sale | Feb 26, 1993 · Amount on File |
| Deed Document Number | 19931305585 |
| Last Transfer Date | Jun 24, 2014 |
| Transfer Doc | 0003391422 |
| Record Updated | Oct 29, 2026 |
The 2025 property tax bill for 3900 Darley Ave was $6,608.
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 | $77,445 (+2.5%) Land $54,454 Building $22,991 | $1,208,900 (-) Land $870,800 Building $338,100 | |
| 2025 | $6,608.00 | $75,556 Land $54,425 Building $21,131 | $1,208,900 Land $870,800 Building $338,100 |
| 2023 | $6,549.00 (+17.32%) | $86,229 (+28.57%) Land $62,457 Building $23,772 | $1,287,000 (+33.37%) Land $932,200 Building $354,800 |
| 2022 | $5,582.00 | $67,067 Land $45,946 Building $21,121 | $965,000 Land $661,100 Building $303,900 |
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.
FEMA maps place 3900 Darley Ave in Zone X, an area of minimal flood risk, though there have been 1 flood claim nearby since 1998.
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 |
| Community Rating System | Class 5 (25% premium discount) |
| Nearby Flood Policies | 7 in force |
| Nearby Flood Claims | 1 (1998) |
| Claims Outside the SFHA | 1 of 1 |
| Most Recent Claim | Feb 1998 · tidal / storm surge |
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 3900 Darley Ave is low, with a 0.03% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 80% of the US · lower than 91% of Colorado |
|---|---|
| Wildfire Likelihood | 0.03% 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 604 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 |
May also be available: AT&T, T-Mobile.
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