Boulder County property record for 3900 Carlock Dr, Boulder, CO 80305
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 1.75 ba · 1,540 sqft · built 1961 |
| Lot Size | 0.167 acres (7,251 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $580,000 (Oct 2015) |
| Tax Bill | $5,788 (2025) |
| Deeds & Mortgages | Nov 2020 Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 1577-08-1-15-008 |
| Primary APN | 1577-08-1-15-008 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 1.75 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 6 Rooms |
| Building Area | 1,540 sqft Living Area |
| Gross Area | 1,840 sqft |
| 1st Floor Area | 1,040 sqft |
| Basement Area | 500 sqft |
| Finished Basement | 500 sqft |
| Interior Walls | Wallboard/Drywall |
| Year Built | Built 1961 |
|---|---|
| Effective Year Built | Effective 1961 |
| Architectural Style | Split Level |
| Exterior Material | Brick Veneer |
| Construction Type | Masonry / Concrete Block |
| Lot Area | 7,251 sqft (0.167 acres) |
| Garage Type | Attached |
| Garage Area | 300 sqft |
| Parking Spaces | 1 Parking Space |
| Porch | Porch |
| Porch Area | 196 sqft |
| Heating System | Hot Water |
|---|
| Account Number | R0012198 |
|---|---|
| Street Address | 3900 CARLOCK DR |
| City | BOULDER |
| State | CO |
| Zip | 80305-6513 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | LOT 8 BLK 5 MOUNTAIN TERRACE |
| Legal Range | 70 |
| Legal Township | 1S |
| Legal Section | 08 |
| Legal Subdivision | MOUNTAIN TERRACE - BO |
| Legal Block | 5 |
| Legal Lot Number | 8 |
| Jurisdiction | BOULDER CO |
| Township / Civil Division | BOULDER |
| Census Block Group | 1 |
| Census Block | 1011 |
| Census Tract | 12509 |
3900 Carlock Dr is owned and occupied by two individuals who bought it in October 2015.
Source: Boulder County records, as of September 18, 2026
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 3900 CARLOCK DR, BOULDER, CO 80305-6513 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Joint Tenants |
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Oct 6, 2015 · Amount on File |
| Deed Sale | Oct 6, 2015 · Amount on File |
| Deed Document Number | 20153477811 |
| Prior Transfer Date | May 22, 2001 |
| Prior Transfer Doc | 0002160570 |
| Record Updated | Oct 29, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | BOULDER CO |
| Property Address | 3900 CARLOCK DR, BOULDER, CO 80305-6513 |
| Transaction Type | Mortgage |
| Record Updated | Feb 5, 2021 |
| Title Company | SERVICELINK |
| Name | Verified Name |
|---|
| Document Number | 0003832925 |
|---|---|
| Date | Nov 13, 2020 |
| Instrument | 3832925 |
| Name | JPMORGAN CHASE BANK NA |
|---|---|
| Type | Bank |
| Address | COLUMBUS, OH 43240 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 361 Months |
| Due | Dec 1, 2050 |
The 2025 property tax bill for 3900 Carlock Dr was $5,788.
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 | $61,288 (+0.96%) Land $54,522 Building $6,766 | $971,300 (-) Land $871,800 Building $99,500 | |
| 2025 | $5,788.00 | $60,707 Land $54,488 Building $6,219 | $971,300 Land $871,800 Building $99,500 |
| 2023 | $5,585.00 (+12.42%) | $68,367 (+27.77%) Land $61,530 Building $6,837 | $1,020,400 (+32.54%) Land $918,360 Building $102,040 |
| 2022 | $4,968.00 | $53,508 Land $45,995 Building $7,513 | $769,900 Land $661,800 Building $108,100 |
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 Carlock Dr 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 Carlock Dr 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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