Built in 1892 (Queen Anne style). Listed on the National Register of Historic Places in 1985.
From the record
“Callahan House, also known as the '''Sweeny-Callahan House''', at 312 Terry St. in Longmont, Colorado, is a large Queen Anne-style house built in 1892 and expanded in 1897 and 1908. It was listed on the National Register of Historic Places in 1985.”
Wikipedia article T. M. Callahan House, CC BY-SA 4.0.
One of 92 National Register listings published here for Boulder County · listed in 1985 · category: Building · built in 1892, Queen Anne style.
National Register reference number.85001064- the number the National Park Service assigned this property when it was listed, and the key its nomination file is catalogued under at the National Archives.
Fires near this property
361 since 1992
Regional context, not property-specific
evidence. The
federal wildfire occurrence database
lists 361 fires within 5 miles of T. M. Callahan House
between 1992 and 2020, burning about 3,299 acres in total. 8 started naturally. 24 were recorded as arson.
Distance is straight-line from the map coordinates, so a fire counted
here may appear on a neighbouring settlement's page as well.
Reported cause
Fires
Missing data/not specified/undetermined
266
Arson/incendiarism
24
Debris and open burning
20
Recreation and ceremony
15
Equipment and vehicle use
11
Smoking
8
Natural
8
Railroad operations and maintenance
3
Misuse of fire by a minor
2
Fireworks
2
Power generation/transmission/distribution
1
Other causes
1
The most recent of
them, most recent first, with the day each was reported and the service
that recorded it.
Regional context, not property-specific
evidence. The federal mineral resources record lists
19 workings within 5 miles of T. M. Callahan House: 9 producers, 5 occurrences, 5 past producers.
9 still produce. What was taken out: Sand and Gravel, Construction, Clay, Gold, Fluorine-Fluorite. Distance is straight-line from the
map coordinates, so a quarry counted here may appear on a neighbouring
settlement's page as well.
Regional context, not property-specific
evidence. The National Weather Service names
Longmont, the town this property stands in, in 77 storm reports between 1996 and 2024: 61 hail, 11 thunderstorm wind, 5 lightning.
The reports record 2 injuries. Each account below is quoted exactly as the forecast office
filed it, from the NOAA Storm Events Database, and each date
opens the federal record of that event.
No historic map-sheet match is published
for this property yet. That does not mean no map exists. This record needs
a coordinate-quality review before it can be joined to a sheet boundary.
Browse the county's mapped places while that work is
pending.
Listed places nearby
6 within 8 miles
Other National Register properties close
enough to walk or drive between, ordered by distance from this one. Both
positions come from the same geocoding pass that matched these properties
to their map sheets.
Listing record. National Park Service National Register of Historic Places, listed-properties dataset, current to 2026-05-22.
Map join. Address geocoded through the United States Census geocoder, then tested against the published boundary of every sheet in the USGS Historical Topographic Map Collection.
How this page is made. Listing fields come from federal records; map-sheet coverage is a labelled coordinate-to-boundary calculation, not a source-field claim.
Wildfire. Short, Karen C. 2022. Spatial wildfire occurrence data for the United States, 1992-2020 [FPA_FOD_20221014]. 6th Edition. Fort Collins, CO: Forest Service Research Data Archive. https://doi.org/10.2737/RDS-2013-0009.6 Collected with United States Government funding and usable without additional permissions or fees.
Mines and quarries. USGS Mineral Resources Data System (MRDS) https://mrdata.usgs.gov/mrds/ A work of the United States government, no copyright under 17 U.S.C. 105.
Storms. NOAA National Centers for Environmental Information, Storm Events Database https://www.ncei.noaa.gov/stormevents/ A work of the United States government, no copyright under 17 U.S.C. 105. Narratives are quoted verbatim from the National Weather Service report and are not edited or summarised.
Block
