Boulder County property record for 20 3rd Ave, Longmont, CO 80501
| Property Type | Medical Building |
|---|---|
| Details | 2,640 sqft · built 1979 |
| Lot Size | 0.423 acres (18,419 sqft) |
| Owner | Company Name on File |
| Last Sale | $450,000 (Feb 2016) |
| Tax Bill | $17,173 (2025) |
| Deeds & Mortgages | Oct 2020 Mortgage |
| Flood Zone | Zone AH (high risk) |
| APN | 1315-03-4-12-028 |
| Primary APN | 1315-03-4-12-028 |
|---|---|
| Alternative APN |
|
| Stories | 1 Story |
|---|---|
| Building Area | 2,640 sqft Gross Area |
| 1st Floor Area | 2,640 sqft |
| Year Built | Built 1979 |
|---|---|
| Effective Year Built | Effective 1990 |
| Construction Type | Wood |
| Lot Area | 18,419 sqft (0.423 acres) |
| Cooling System | Package A/C |
|---|---|
| Heating System | HVAC |
| Account Number | R0607256 |
|---|---|
| Street Address | 20 3RD AVE |
| City | LONGMONT |
| State | CO |
| Zip | 80501-5602 |
| Property Category | Commercial |
| Property Type | Commercial > Office > Medical Building |
| Legal Description | LOT 7 BLK 69 LONGMONT OT |
| Legal Range | 69 |
| Legal Township | 2N |
| Legal Section | 3 |
| Legal Subdivision | LONGMONT OT |
| Legal Block | 69 |
| Legal Lot Number | 7 |
| Jurisdiction | BOULDER CO |
| Township / Civil Division | LONGMONT |
| Census Block Group | 2 |
| Census Block | 2008 |
| Census Tract | 13401 |
20 3rd Ave, a commercial property, is owned by a company that bought it in February 2016.
Source: Boulder County records, as of October 1, 2026
| Owner of Record | Company Name on File |
|---|---|
| Mailing Address | 104 S MAIN ST, LONGMONT, CO 80501-6216 |
| 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 | Feb 5, 2016 · Amount on File |
| Deed Sale | Feb 5, 2016 · Amount on File |
| Deed Document Number | 20163499793 |
| Record Updated | Oct 29, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | BOULDER CO |
| Property Address | 20 3RD AVE, LONGMONT, CO 80501-5602 |
| Transaction Type | Mortgage |
| Record Updated | Jul 26, 2022 |
| Name | Verified Name |
|---|
| Document Number | 0003821763 |
|---|---|
| Date | Oct 6, 2020 |
| Instrument | 3821763 |
| Name | HIGH PLAINS BANK |
|---|---|
| Type | Bank |
| Address | LONGMONT, CO 80501 |
| Type | Commercial Mortgage |
|---|---|
| Amount | Amount on Record |
The 2025 property tax bill for 20 3rd Ave was $17,173.
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 | $155,000 (-7.41%) Land $124,025 Building $30,975 | $620,000 (-) Land $496,100 Building $123,900 | |
| 2025 | $17,173.00 | $167,400 Land $133,947 Building $33,453 | $620,000 Land $496,100 Building $123,900 |
| 2023 | $21,299.00 (+15.07%) | $222,753 (+25.1%) Land $136,068 Building $86,685 | $798,400 (+30.03%) Land $487,700 Building $310,700 |
| 2022 | $18,510.00 | $178,060 Land $64,090 Building $113,970 | $614,000 Land $221,000 Building $393,000 |
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 20 3rd Ave in Zone AH, a high-risk flood area; flood insurance is required for federally backed loans.
Source: FEMA National Flood Hazard Layer, effective October 14, 2026 · OpenFEMA NFIP redacted claims and policies, as of September 2026
| FEMA Flood Zone | Zone AH high risk · shallow ponding 1–3 ft |
|---|---|
| 100-Year Floodplain | Yes 1% annual chance |
| Floodway | No |
| Base Flood Elevation | Varies along the reach; see FIRM |
| Flood Insurance Requirement | Required federally backed loans |
| 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 20 3rd 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 99.1% of the US · lower than 99.6% 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 564 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 | 140 / 20 |
May also be available: AT&T, Rise Broadband, T-Mobile, TDS Telecom.
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