Boulder County property record for 425 Sumner St, Longmont, CO 80501
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 1.75 ba · 2,240 sqft · built 1940 |
| Lot Size | 0.151 acres (6,574 sqft) |
| Owner | 2 Individual Names on Record |
| Last Sale | $284,500 (Sep 2007) |
| Tax Bill | $3,214 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 1315-04-1-25-017 |
| Primary APN | 1315-04-1-25-017 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 1.75 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 6 Rooms |
| Stories | 1 Story |
| Building Area | 2,240 sqft Living Area |
| Gross Area | 2,656 sqft |
| 1st Floor Area | 1,210 sqft |
| Basement Area | 1,210 sqft |
| Finished Basement | 1,030 sqft |
| Unfinished Basement | 180 sqft |
| Interior Walls | Plaster |
| Year Built | Built 1940 |
|---|---|
| Effective Year Built | Effective 1940 |
| Architectural Style | Ranch |
| Exterior Material | Wood Shingle |
| Construction Type | Frame |
| Lot Area | 6,574 sqft (0.151 acres) |
| Garage Type | Attached |
| Garage Area | 180 sqft |
| Parking Spaces | 3 Parking Spaces |
| Porch | Enclosed Porch |
| Porch Area | 56 sqft |
| Cooling System | Central |
|---|---|
| Heating System | Forced Air with A/C |
| Account Number | R0046355 |
|---|---|
| Street Address | 425 SUMNER ST |
| City | LONGMONT |
| State | CO |
| Zip | 80501-4865 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | LOTS 35-36 BLK 1 CAPITOL HILL |
| Legal Range | 69 |
| Legal Township | 2N |
| Legal Section | 04 |
| Legal Subdivision | CAPITOL HILL - LG |
| Legal Block | 1 |
| Legal Lot Number | 35 |
| Jurisdiction | BOULDER CO |
| Township / Civil Division | LONGMONT |
| Census Block Group | 4 |
| Census Block | 4006 |
| Census Tract | 13302 |
Source: Boulder County records, as of September 18, 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 Record |
|---|---|
| Mailing Address | 425 SUMNER ST, LONGMONT, CO 80501-4865 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Sep 28, 2007 · Amount on Record |
| Deed Sale | Sep 28, 2007 · Amount on Record |
| Prior Sale | Mar 31, 1995 · Amount on Record |
| Deed Document Number | 20072886143 |
| Prior Transfer Date | Jul 7, 1994 |
| Prior Transfer Doc | 0001447953 |
| Record Updated | Oct 29, 2026 |
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 | $36,108 (-2.08%) Land $6,365 Building $29,743 | $590,000 (-) Land $152,600 Building $437,400 | |
| 2025 | $3,214.00 (+15.86%) | $36,876 (-7.33%) Land $9,538 Building $27,338 | $590,000 (-0.66%) Land $152,600 Building $437,400 |
| 2023 | $2,774.00 (+19.93%) | $39,791 (+31.19%) Land $10,673 Building $29,118 | $593,900 (+36.09%) Land $159,300 Building $434,600 |
| 2022 | $2,313.00 | $30,330 Land $7,854 Building $22,476 | $436,400 Land $113,000 Building $323,400 |
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.
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 |
| Community Rating System | Class 5 (25% premium discount) |
| Nearby Flood Policies | 1 in force |
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.
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 506 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 |
| Rise Broadband Fixed Wireless | 100 / 20 |
| T-Mobile Fixed Wireless | 100 / 20 |
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