Boulder County property record for 639 E 4th Ave, Longmont, CO 80504
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 1.75 ba · 1,375 sqft · built 1972 |
| Lot Size | 0.17 acres (7,395 sqft) |
| Owner | Individual Name on File |
| Last Sale | $160,000 (Mar 2014) |
| Tax Bill | $2,456 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 1315-02-4-13-009 |
| Primary APN | 1315-02-4-13-009 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 1.75 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 7 Rooms |
| Stories | 1 Story |
| Building Area | 1,375 sqft Living Area |
| 1st Floor Area | 1,375 sqft |
| Interior Walls | Wallboard/Drywall |
| Year Built | Built 1972 |
|---|---|
| Effective Year Built | Effective 1972 |
| Architectural Style | Ranch |
| Exterior Material | Brick Veneer |
| Construction Type | Brick |
| Roof Material | Asphalt |
| Lot Area | 7,395 sqft (0.17 acres) |
| Garage Area | 300 sqft |
| Parking Spaces | 1 Parking Space |
| Porch | Porch |
| Porch Area | 180 sqft |
| Patio Area | 180 sqft |
| Heating System | Forced Air with A/C |
|---|
| Account Number | R0040296 |
|---|---|
| Street Address | 639 E 4TH AVE |
| City | LONGMONT |
| State | CO |
| Zip | 80504-6008 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | LOT 233 DOLLHOUSE VILLAGE 2 |
| Legal Range | 69 |
| Legal Township | 2N |
| Legal Section | 02 |
| Legal Subdivision | DOLLHOUSE VILLAGE 2 - LG |
| Legal Block | 1 |
| Legal Lot Number | 233 |
| Jurisdiction | BOULDER CO |
| Township / Civil Division | LONGMONT |
| Census Block Group | 1 |
| Census Block | 1010 |
| Census Tract | 13402 |
639 E 4th Ave is owned and occupied by an individual who bought it in March 2014.
Source: Boulder County records, as of September 18, 2026
| Owner of Record | Individual Name on File |
|---|---|
| Mailing Address | 639 E 4TH AVE, LONGMONT, CO 80504-6008 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
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 | Name on Deed |
|---|---|
| Last Sale | Mar 21, 2014 · Amount on File |
| Deed Sale | Mar 21, 2014 · Amount on File |
| Prior Sale | Sep 27, 2013 |
| Deed Document Number | 20143371331 |
| Prior Transfer Date | Sep 26, 2013 |
| Prior Transfer Doc | 0003344574 |
| Record Updated | Oct 29, 2026 |
The 2025 property tax bill for 639 E 4th Ave was $2,456.
Source: Boulder County assessment roll, as of September 18, 2026
| Type | Name |
|---|---|
| State | Colorado |
| County | Boulder County |
| Municipality | Longmont City |
| Unified School District | St. Vrain Valley School District RE 1J (PK - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $22,913 (-2.08%) Land $8,443 Building $14,470 | $374,400 (-) Land $161,600 Building $212,800 | |
| 2025 | $2,456.00 | $23,400 Land $10,100 Building $13,300 | $374,400 Land $161,600 Building $212,800 |
| 2023 | $1,778.00 (+7.04%) | $22,532 (+34.19%) Land $11,162 Building $11,370 | $336,300 (+39.2%) Land $166,600 Building $169,700 |
| 2022 | $1,661.00 | $16,791 Land $7,881 Building $8,910 | $241,600 Land $113,400 Building $128,200 |
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 639 E 4th Ave in Zone X, an area of minimal flood risk.
Source: FEMA National Flood Hazard Layer, effective October 14, 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
Values are read at the parcel center point; lenders make the official flood determination.
The area around 639 E 4th Ave has no burnable land within ember reach, so its wildfire risk is not rated.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Not rated no burnable land within 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 LONGMONT serves 104,178 people · EPA ID CO0107485 |
|---|---|
| Water Source | Surface water |
| Last State Inspection | Sep 2025 |
| Lead | 2 ppb (2023–2025) action level 15 ppb |
| Water Quality | None last 10 years |
|---|---|
| Treatment and Procedure | None last 10 years |
| Monitoring and Reporting | None 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 696 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| NextLight Fiber | 10,000 / 10,000 |
| Xfinity Cable | 1,200 / 35 |
| Verizon Fixed Wireless | 300 / 20 |
| CenturyLink DSL | 140 / 20 |
May also be available: Rise Broadband, TDS Telecom.
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