Listed on the National Register of Historic Places in 2001. 15 historic topographic surveys show this location, the earliest from 1901.
From the record
“The Inland Empire metropolitan area and region of Southern California, which sits directly east of the Los Angeles metropolitan area, covers more than 27,000 square miles (70,000 km2). The metropolitan area consists of Riverside County and San Bernardino County and is home to over 4 million people.”
Wikipedia article List of museums in the Inland Empire, CC BY-SA 4.0.
One of 90 National Register listings published here for Riverside County · listed in 2001 · category: Building.
National Register reference number.01001178- 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.
Then and now
1901 to 1996
The ground this property stands on, surveyed
95 years apart. Drag the handle to wipe between them. Both sheets are
United States Geological Survey originals; neither has been altered.
19011996
Fires near this property
942 since 1992
Regional context, not property-specific
evidence. The
federal wildfire occurrence database
lists 942 fires within 5 miles of Estudillo Mansion
between 1992 and 2020, burning about 13,430 acres in total. 9 started naturally. 125 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
446
Equipment and vehicle use
136
Arson/incendiarism
125
Misuse of fire by a minor
90
Debris and open burning
59
Smoking
55
Natural
9
Recreation and ceremony
9
Power generation/transmission/distribution
9
Fireworks
2
Other causes
2
The most recent of
them, most recent first, with the day each was reported and the service
that recorded it.
Date
Cause
Size
Reported by
Name on the report
9 September 2020
Missing data/not specified/undetermined
under an acre
Riverside Unit
not named
9 September 2020
Missing data/not specified/undetermined
3.0 acres
Riverside Unit
W RAMONA EXPRESSWAY SAN
9 September 2019
Missing data/not specified/undetermined
under an acre
Riverside Unit
JOHNSTON AV HEM
8 September 2018
Missing data/not specified/undetermined
under an acre
California Department of Forestry & Fire Protection
SANDERSON AV / GILMAN SPR
8 September 1996
Misuse of fire by a minor
under an acre
Riverside Unit
PINE
7 September 2020
Debris and open burning
under an acre
Riverside Unit
DOVERWOOD PL HEM
7 September 2019
Missing data/not specified/undetermined
under an acre
Riverside Unit
S MISTLETOE AV SANJ
7 September 2018
Missing data/not specified/undetermined
under an acre
California Department of Forestry & Fire Protection
Regional context, not property-specific
evidence. The federal mineral resources record lists
15 workings within 5 miles of Estudillo Mansion: 7 past producers, 4 occurrences, 3 producers, 1 prospect.
3 still produce. What was taken out: Limestone, General, Sand and Gravel, Construction, Gemstone, Geothermal. 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
San Jacinto, the town this property stands in, in 14 storm reports between 1993 and 2025: 4 flood, 3 heavy rain, 2 hail, 2 thunderstorm wind.
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.
Delayed report. Swift water rescues. Vehicles in mud, debris and water. 6 persons affected. Mud was half way up the side of one vehicle and drivers were trapped. 3 automated weather stations recorded 0.5 inches in 1 hour. Several mud slides reported.
A spotter reported four inches of water on Mountain Avenue in the city of San Jacinto near Hemet. The Riverside County sheriff closed the roadway. |A mesonet station in the Valle Vista/Hemet area recorded a one-hour rainfall amount of 0.81 inches.
United States Geological Survey topographic
sheets whose coverage includes this point. Matched by taking the coordinate the National Park Service records for this property, then
testing that coordinate against the published boundary of every sheet.
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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