Boulder County property record for 420 E Saint Clair Ave, Longmont, CO 80504 · Last verified June 2026
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 1.75 ba · 1,900 sqft · built 1977 |
| Lot Size | 0.205 acres (8,937 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $146,500 (Sep 2011) |
| Tax Bill | $2,404 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 1315-02-1-13-014 |
| Primary APN | 1315-02-1-13-014 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 1.75 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 8 Rooms |
| Stories | 1 Story |
| Building Area | 1,900 sqft Living Area |
| Gross Area | 2,496 sqft |
| 1st Floor Area | 1,092 sqft |
| Basement Area | 1,092 sqft |
| Finished Basement | 808 sqft |
| Unfinished Basement | 284 sqft |
| Interior Walls | Wallboard/Drywall |
| Year Built | Built 1977 |
|---|---|
| Effective Year Built | Effective 1977 |
| Architectural Style | Ranch |
| Exterior Material | Brick Veneer |
| Construction Type | Brick |
| Roof Material | Asphalt |
| Lot Area | 8,937 sqft (0.205 acres) |
| Garage Type | Attached |
| Garage Area | 312 sqft |
| Parking Spaces | 1 Parking Space |
| Patio Area | 192 sqft |
| Cooling System | Central |
|---|---|
| Heating System | Forced Air with A/C |
| Account Number | R0069642 |
|---|---|
| Street Address | 420 E SAINT CLAIR AVE |
| City | LONGMONT |
| State | CO |
| Zip | 80504-1542 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | LOT 14 BLK 16 SUNNYVALE 5 |
| Legal Range | 69 |
| Legal Township | 2N |
| Legal Section | 02 |
| Legal Subdivision | SUNNYVALE 5 |
| Legal Block | 16 |
| Legal Lot Number | 14 |
| Jurisdiction | BOULDER CO |
| Township / Civil Division | LONGMONT |
| Census Block Group | 5 |
| Census Block | 5015 |
| Census Tract | 13402 |
Source: Boulder County records · APN 1315-02-1-13-014
Assessment roll updated June 15, 2026 · Last verified June 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 420 E SAINT CLAIR AVE, LONGMONT, CO 80504-1542 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Joint Tenants |
| Deed Names | 2 Verified Names on Deed |
|---|---|
| Last Sale | Sep 06, 2011 · Amount on Record |
| Deed Sale | Sep 06, 2011 · Amount on Record |
| Prior Sale | Jul 07, 2011 |
| Deed Document Number | 20113169081 |
| Prior Transfer Date | Sep 29, 2004 |
| Prior Transfer Doc | 0002631828 |
| Record Updated | Sep 20, 2026 |
Source: Boulder County records · Assessment roll updated June 15, 2026 · Last verified June 2026
| Type | Name |
|---|---|
| State | Colorado |
| County | Boulder County |
| Municipality | Longmont City |
| Unified School District | St. Vrain Valley School District RE 1J (PK - 12) |
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.
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $31,722 (+8.8%) Land $12,750 Building $18,972 | $466,500 (-) Land $187,500 Building $279,000 | |
| 2025 | $2,404.00 (+45.34%) | $29,157 (+4.43%) Land $11,719 Building $17,438 | $466,500 (+11.95%) Land $187,500 Building $279,000 |
| 2023 | $1,654.00 (+21.26%) | $27,919 (+34.62%) Land $12,857 Building $15,062 | $416,700 (+39.64%) Land $191,900 Building $224,800 |
| 2022 | $1,364.00 | $20,739 Land $9,056 Building $11,683 | $298,400 Land $130,300 Building $168,100 |
Source: FEMA National Flood Hazard Layer, Boulder County (08013C), updated October 14, 2026 · USDA Forest Service Wildfire Risk to Communities, 2nd edition (2024), fuels as of 2020 · Last verified October 2026
| FEMA Flood Zone | Zone X |
|---|---|
| Special Flood Hazard Area | No |
| Flood Hazard | Minimal |
| 500-Year Floodplain | No |
| Wildfire Risk | Not rated no burnable land in reach |
|---|---|
| Wildfire Likelihood | Negligible |
| Exposure | None beyond ember reach |
Values are read at the parcel center point; lenders make the official flood determination.
Source: FCC Broadband Data Collection, availability as of December 31, 2025 · Published October 2026 · based on 696 locations within about half a mile of this property
| Provider | Technology | Download / Upload (Mbps) |
|---|---|---|
| City of Longmont | Fiber | 10,000 / 10,000 |
| Xfinity | Cable | 1,200 / 35 |
| Verizon | Fixed Wireless | 300 / 20 |
| Lumen Technologies | DSL | 140 / 20 |
May also be available at this address: JAB Wireless, TDS Telecom. Availability varies by address; speeds are provider-advertised maximums, not measured.
5G and 4G LTE
Search by:
By searching, you agree to: Terms • Privacy • Disclosures