Listed on the National Register of Historic Places in 1988. 13 historic topographic surveys show this location, the earliest from 1901.
From the record
“Fort Hill Estate is a historic estate located at Lloyd Harbor in Suffolk County, New York on the site of the British Revolutionary War Fort Franklin. The estate home is a monumental brick and limestone Tudor Revival style structure built as a summer home for Anne Alden in 1879, and enlarged for the industrialist William John Matheson in 1900.”
Wikipedia article Fort Hill Estate, CC BY-SA 4.0.
One of 338 National Register listings published here for Suffolk County · listed in 1988 · category: Building.
National Register reference number.88000599- 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
121 since 1992
Regional context, not property-specific
evidence. The
federal wildfire occurrence database
lists 121 fires within 5 miles of Fort Hill Estate
between 1992 and 2020, burning about 48 acres in total. 16 started naturally. 26 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
60
Arson/incendiarism
26
Natural
16
Debris and open burning
5
Recreation and ceremony
5
Smoking
4
Equipment and vehicle use
3
Power generation/transmission/distribution
2
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
2 workings within 5 miles of Fort Hill Estate: 1 past producer, 1 producer.
1 still produces. What was taken out: Sand and Gravel, Construction. 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
Lloyd Harbor, the town this property stands in, in 3 storm reports between 1999 and 2021: 2 thunderstorm wind, 1 flash flood.
No death or injury is recorded in these reports. 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.
Flash flooding resulted in an estimated $3,234,712 in damages across Suffolk County. This estimate is based on FEMA grant money awarded under the Individuals and Household Program (IHP), which includes funds for both housing assistance and other needs.
United States Geological Survey topographic
sheets whose coverage includes this point. Matched by taking the middle of the area the National Park Service maps for this listing, then
testing that coordinate against the published boundary of every sheet.
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.
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