Boulder County property record for 504 4th Ave, Longmont, CO 80501
| Property Type | Commercial |
|---|---|
| Details | 4,308 sqft · built 1925 |
| Lot Size | 0.12 acres (5,238 sqft) |
| Owner | Company Name on File |
| Last Sale | $150,000 (May 1997) |
| Tax Bill | $17,720 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 1315-03-4-06-016 |
| Primary APN | 1315-03-4-06-016 |
|---|---|
| Alternative APNs |
|
| Stories | 1 Story |
|---|---|
| Building Area | 4,308 sqft Gross Area |
| 1st Floor Area | 4,308 sqft |
| Year Built | Built 1925 |
|---|---|
| Effective Year Built | Effective 1965 |
| Construction Type | Brick |
| Lot Area | 5,238 sqft (0.12 acres) |
| Cooling System | HVAC |
|---|---|
| Heating System | Forced Air with A/C |
| Account Number | R0055787 |
|---|---|
| Street Address | 504 4TH AVE |
| City | LONGMONT |
| State | CO |
| Zip | 80501-5510 |
| Property Category | Commercial |
| Property Type | Commercial > Retail |
| Legal Description | E 46.27 FT OF S 2 FT LOT 36 & E 46.27 FT LOTS 37-40 INC BLK 51 LONGMONT OT |
| Legal Range | 69 |
| Legal Township | 2N |
| Legal Section | 03 |
| Legal Subdivision | LONGMONT OT |
| Legal Block | 51 |
| Legal Lot Number | 36 |
| Jurisdiction | BOULDER CO |
| Township / Civil Division | LONGMONT |
| Census Block Group | 2 |
| Census Block | 2014 |
| Census Tract | 13401 |
Source: NPS National Register of Historic Places, as of August 1, 2026
| Historic District | Within the Downtown Longmont Historic District listed 2017 · 69 contributing resources · NRIS 100001501 |
|---|
Federal listing alone does not restrict alterations; local historic district rules, which this data does not cover, may apply.
504 4th Ave, a commercial property, is owned by a company that bought it in May 1997.
Source: Boulder County records, as of October 1, 2026
| Owner of Record | Company Name on File |
|---|---|
| Mailing Address | 2552 E ALAMEDA AVE, 84, DENVER, CO 80209-3322 |
| Owner Type | Company |
| Vesting | Company |
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 | May 27, 1997 · Amount on File |
| Deed Sale | May 27, 1997 · Amount on File |
| Prior Sale | Jul 12, 1990 |
| Deed Document Number | 19971701176 |
| Record Updated | Oct 29, 2026 |
The 2025 property tax bill for 504 4th Ave was $17,720.
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 | $150,000 (-7.41%) Land $66,300 Building $83,700 | $600,000 (-) Land $265,200 Building $334,800 | |
| 2025 | $17,720.00 | $162,000 Land $71,604 Building $90,396 | $600,000 Land $265,200 Building $334,800 |
| 2023 | $18,764.00 (+10.02%) | $185,144 (+20.23%) Land $79,710 Building $105,434 | $663,600 (+24.97%) Land $285,700 Building $377,900 |
| 2022 | $17,055.00 | $153,990 Land $59,740 Building $94,250 | $531,000 Land $206,000 Building $325,000 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 504 4th Ave in Zone X, an area of minimal flood risk, though there have been 1 flood claim nearby since 1981.
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 |
| Flood Insurance Cost | Premium on File median of 16 policies |
| Community Rating System | Class 5 (25% premium discount) |
| Nearby Flood Policies | 16 in force |
| Nearby Flood Claims | 1 (1981) |
| Claims Outside the SFHA | 1 of 1 |
| Most Recent Claim | May 1981 · 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.
The area around 504 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 488 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| NextLight Fiber | 10,000 / 10,000 |
| Xfinity Cable | 2,000 / 250 |
| Verizon Fixed Wireless | 300 / 20 |
| CenturyLink DSL · Fiber in parts of the area | 140 / 20 |
| T-Mobile Fixed Wireless | 100 / 20 |
May also be available: Rise Broadband, TDS Telecom.
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