A National Historic Landmark. Listed on the National Register of Historic Places in 1966. 12 historic topographic surveys show this location, the earliest from 1904.
From the record
“Bancroft Ranch House is a historic house museum at 9050 Memory Lane in Spring Valley, California. Built in 1856, it is the oldest Anglo-American building in the town.”
Wikipedia article Hubert H. Bancroft Ranch House, CC BY-SA 4.0.
One of 148 National Register listings published here for San Diego County · listed in 1966 · category: Building · a National Historic Landmark.
National Register reference number.66000227- 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
1904 to 1996
The ground this property stands on, surveyed
92 years apart. Drag the handle to wipe between them. Both sheets are
United States Geological Survey originals; neither has been altered.
19041996
Fires near this property
502 since 1992
Regional context, not property-specific
evidence. The
federal wildfire occurrence database
lists 502 fires within 5 miles of Hubert H. Bancroft Ranchhouse
between 1992 and 2020, burning about 650 acres in total. 1 started naturally. 89 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
293
Arson/incendiarism
89
Equipment and vehicle use
44
Debris and open burning
29
Misuse of fire by a minor
17
Recreation and ceremony
14
Smoking
12
Power generation/transmission/distribution
2
Fireworks
1
Natural
1
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 2011
Arson/incendiarism
under an acre
San Diego Unit
not named
9 September 2010
Arson/incendiarism
1.1 acres
California Department of Forestry & Fire Protection
not named
9 September 2004
Missing data/not specified/undetermined
under an acre
San Diego National Wildlife Refuge
SYCUAN
8 September 2006
Recreation and ceremony
under an acre
San Diego National Wildlife Refuge
JAMACHA
8 September 2006
Equipment and vehicle use
under an acre
San Diego National Wildlife Refuge
CREEK
7 September 2011
Missing data/not specified/undetermined
under an acre
San Diego Unit
not named
7 September 2007
Misuse of fire by a minor
under an acre
California Department of Forestry & Fire Protection
not named
7 September 2005
Debris and open burning
under an acre
California Department of Forestry & Fire Protection
Regional context, not property-specific
evidence. The federal mineral resources record lists
31 workings within 5 miles of Hubert H. Bancroft Ranchhouse: 18 past producers, 13 producers.
13 still produce. What was taken out: Stone, Crushed/Broken, Sand and Gravel, Construction, Granite, Stone. Distance is straight-line from the
map coordinates, so a quarry counted here may appear on a neighbouring
settlement's page as well.
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.
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