Boulder County property record for 843 Sumner St, Longmont, CO 80501
| Property Type | Single Family Home |
|---|---|
| Details | 2 bd · 1 ba · 994 sqft · built 1954 |
| Lot Size | 0.136 acres (5,935 sqft) |
| Owner | Individual Name on File |
| Last Sale | $510,000 (Sep 2022) |
| Tax Bill | $3,384 (2025) |
| Deeds & Mortgages | Oct 2022 Sale Sep 2022 Sale |
| Flood Zone | Zone X (minimal risk) |
| APN | 1315-04-1-09-020 |
| Primary APN | 1315-04-1-09-020 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 2 Beds |
|---|---|
| Full Baths | 1 Bath |
| Total Rooms | 6 Rooms |
| Stories | 1 Story |
| Building Area | 994 sqft Living Area |
| Gross Area | 1,234 sqft |
| 1st Floor Area | 994 sqft |
| Interior Walls | Plaster |
| Year Built | Built 1954 |
|---|---|
| Effective Year Built | Effective 1988 |
| Architectural Style | Ranch |
| Exterior Material | Wood Shingle |
| Construction Type | Frame |
| Roof Material | Asphalt |
| Lot Area | 5,935 sqft (0.136 acres) |
| Garage Type | Attached |
| Garage Area | 240 sqft |
| Parking Spaces | 1 Parking Space |
| Porch | Porch |
| Porch Area | 54 sqft |
| Deck Area | 350 sqft |
| Cooling System | Evaporative |
|---|---|
| Heating System | Forced Air with A/C |
| Account Number | R0046467 |
|---|---|
| Street Address | 843 SUMNER ST |
| City | LONGMONT |
| State | CO |
| Zip | 80501-4836 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | S 60 FT OF E 90 FT LOT 6 BLK 8 BROWNS REPLAT OF BROWNS SUB |
| Legal Range | 69 |
| Legal Township | 2N |
| Legal Section | 04 |
| Legal Subdivision | BROWN REPLAT OF BROWNS SUB - LG |
| Legal Block | 8 |
| Legal Lot Number | 6 |
| Jurisdiction | BOULDER CO |
| Township / Civil Division | LONGMONT |
| Census Block Group | 5 |
| Census Block | 5006 |
| Census Tract | 13302 |
843 Sumner St is owned by an individual who acquired it in October 2022.
Source: Boulder County records, as of September 18, 2026
| Owner of Record | Individual Name on File |
|---|---|
| Mailing Address | 536 W 2ND ST, 2, SALIDA, CO 81201-1678 |
| Owner Type | Individual |
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Date | Document |
|---|---|
| Oct 25, 2022 | Beneficiary Deed, Transfer |
| Sep 12, 2022 | Warranty Deed, Transfer FIDELITY NATIONAL TITLE |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Sep 12, 2022 · Amount on File |
| Deed Sale | Sep 12, 2022 · Amount on File |
| Prior Sale | Mar 19, 2013 · Amount on File |
| Deed Document Number | 20223980634 |
| Last Transfer Date | Oct 25, 2022 |
| Transfer Doc | 0003986566 |
| Record Updated | Oct 29, 2026 |
| Document Type | Beneficiary Deed |
|---|---|
| Jurisdiction | BOULDER CO |
| Recording Date | Oct 25, 2022 |
| Property Address | 843 SUMNER ST, LONGMONT, CO 80501-4836 |
| Document Number | 0003986566 |
| Instrument Date | Oct 25, 2022 |
| Instrument | 3986566 |
| Transaction Type | Transfer |
| Record Updated | Nov 1, 2022 |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | No Consideration Stated |
| Additional |
|
| Name | Verified Name |
|---|---|
| Address | 6689 N POSITANO WAY, 6689, TUCSON, AZ 85741-3033 |
| Name | Verified Name |
|---|---|
| Address | 6689 N POSITANO WAY, TUCSON, AZ 85741-3033 |
| Document Type | Warranty Deed |
|---|---|
| Jurisdiction | BOULDER CO |
| Recording Date | Sep 12, 2022 |
| Property Address | 843 SUMNER ST, LONGMONT, CO 80501-4836 |
| Document Number | 0003980634 |
| Instrument Date | Sep 8, 2022 |
| Instrument | 3980634 |
| Transaction Type | Transfer |
| Record Updated | Sep 27, 2022 |
| Title Company | FIDELITY NATIONAL TITLE |
| Amount | Amount on Record |
|---|---|
| Tax | $51.00 |
| Amount Accuracy | Full Amount Stated |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Tenants in Severalty |
| Address | 843 SUMNER ST, LONGMONT, CO 80501-4836 |
The 2025 property tax bill for 843 Sumner St was $3,384.
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 | $31,573 (-2.08%) Land $6,352 Building $25,221 | $515,900 (-) Land $145,000 Building $370,900 | |
| 2025 | $3,384.00 | $32,244 Land $9,063 Building $23,181 | $515,900 Land $145,000 Building $370,900 |
| 2023 | $2,934.00 (+14.16%) | $34,786 (+33.9%) Land $10,137 Building $24,649 | $519,200 (+38.9%) Land $151,300 Building $367,900 |
| 2022 | $2,570.00 | $25,979 Land $7,464 Building $18,515 | $373,800 Land $107,400 Building $266,400 |
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.
FEMA maps place 843 Sumner St in Zone X, an area of minimal flood risk, though there have been 1 flood claim nearby since 2013.
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 |
| Nearby Flood Claims | 1 (2013) |
| Claims Outside the SFHA | 1 of 1 |
| Most Recent Claim | Sep 2013 · Severe Storms, Flooding, Landslides, And Mudslides |
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 843 Sumner St 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 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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