Boulder County property record for 331 1st Ave, Longmont, CO 80501
| Property Type | Warehouse, Storage |
|---|---|
| Details | 38,500 sqft · built 1974 |
| Lot Size | 2.33 acres (101,838 sqft) |
| Owner | Company Name on File |
| Last Sale | $1,770,000 (Dec 2004) |
| Tax Bill | $85,313 (2025) |
| Deeds & Mortgages | Jan 2019 Mortgage Aug 2017 Mortgage |
| Flood Zone | Zone X (moderate risk) |
| APN | 1315-03-4-25-021 |
| Primary APN | 1315-03-4-25-021 |
|---|---|
| Alternative APNs |
|
| Stories | 1 Story |
|---|---|
| Building Area | 38,500 sqft Gross Area |
| 1st Floor Area | 38,500 sqft |
| Year Built | Built 1974 |
|---|---|
| Effective Year Built | Effective 1989 |
| Construction Type | Steel Frame |
| Lot Area | 101,838 sqft |
| Heating Fuel | Electric |
|---|
| Account Number | R0514601 |
|---|---|
| Street Address | 331 1ST AVE |
| City | LONGMONT |
| State | CO |
| Zip | 80501-5958 |
| Property Category | Industrial |
| Property Type | Industrial > Warehouse, Storage |
| Legal Description | WLY 70 FT OF LOT 5 BLK 96 & LOTS 1-5 INC BLK 97 LONGMONT OT |
| Legal Range | 69 |
| Legal Township | 2N |
| Legal Section | 03 |
| Legal Subdivision | LONGMONT OT |
| Legal Block | 96,97 |
| Legal Lot Number | 1 |
| Jurisdiction | BOULDER CO |
| Township / Civil Division | LONGMONT |
| Census Block Group | 2 |
| Census Block | 2025 |
| Census Tract | 13401 |
331 1st Ave, an industrial property, is owned by a company that bought it in December 2004.
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 | PO BOX 1101, LONGMONT, CO 80502-1101 |
| Owner Type | Company |
| Vesting | Company |
| Date | Document |
|---|---|
| Jan 31, 2019 | Deed of Trust, Mortgage TODD POTESTIO |
| Aug 16, 2017 | Deed of Trust, Mortgage WESTERRA CU |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Dec 17, 2004 · Amount on File |
| Deed Sale | Dec 17, 2004 · Amount on File |
| Deed Document Number | 20042651344 |
| Record Updated | Oct 29, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | BOULDER CO |
| Property Address | 331 1ST AVE, LONGMONT, CO 80501-5958 |
| Document Number | 0003697754 |
| Instrument Date | Jan 31, 2019 |
| Transaction Type | Mortgage |
| Record Updated | Feb 20, 2019 |
| Additional |
|
|---|
| Name | Verified Name |
|---|---|
| Relationship | Company |
| Address | PO BOX 1101 LONGMONT CO 805021101, LONGMONT, CO 80502-1101 |
| Document Number | 0003697754 |
|---|---|
| Date | Feb 12, 2019 |
| Instrument | 3697754 |
| Name | TODD POTESTIO |
|---|---|
| Address | 1932 CHERRY ST, DENVER, CO 80220-1148 |
| Amount | Amount on Record |
|---|---|
| Term | 60 Months |
| Due | Feb 11, 2024 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | BOULDER CO |
| Property Address | 331 1ST AVE, LONGMONT, CO 80501-5958 |
| Document Number | 0003609725 |
| Instrument Date | Aug 16, 2017 |
| Transaction Type | Mortgage |
| Record Updated | Aug 31, 2017 |
| Title Company | STEWART TITLE |
| Additional |
|
|---|
| Name | Verified Name |
|---|---|
| Relationship | Company |
| Address | 2937 BREAKWATER WAY LONGMONT CO 805037905, LONGMONT, CO 80503-7905 |
| Document Number | 0003609725 |
|---|---|
| Date | Aug 17, 2017 |
| Instrument | 3609725 |
| Name | WESTERRA CU |
|---|---|
| Type | Credit Union |
| Address | 3700 E ALAMEDA AVE, DENVER, CO 80209-3100 |
| Amount | Amount on Record |
|---|---|
| Term | 120 Months |
| Due | Aug 16, 2027 |
The 2025 property tax bill for 331 1st Ave was $85,313.
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 | $770,000 (-7.41%) Land $245,000 Building $525,000 | $3,080,000 (-) Land $980,000 Building $2,100,000 | |
| 2025 | $85,313.00 | $831,600 Land $264,600 Building $567,000 | $3,080,000 Land $980,000 Building $2,100,000 |
| 2023 | $112,885.00 (+57.5%) | $1,136,227 (+64.8%) Land $273,671 Building $862,556 | $4,072,500 (+71.29%) Land $980,900 Building $3,091,600 |
| 2022 | $71,675.00 | $689,475 Land $145,000 Building $544,475 | $2,377,500 Land $500,000 Building $1,877,500 |
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 331 1st Ave in Zone X, an area of moderate flood risk, within 100 ft of a high-risk flood zone.
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 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.
Wildfire risk around 331 1st Ave is low, with less than a 0.01% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 98% of the US · lower than 99.2% of Colorado |
|---|---|
| Wildfire Likelihood | Under 0.01% 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 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 77 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| NextLight Fiber | 10,000 / 10,000 |
| Xfinity Cable · Fiber in parts of the area | 2,000 / 250 |
| AT&T Fixed Wireless | 100 / 20 |
May also be available: CenturyLink, Rise Broadband, T-Mobile, TDS Telecom, Verizon.
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