A National Historic Landmark. Built in 1867 (Monterey Colonial architecture). Listed on the National Register of Historic Places in 1968. 16 historic topographic surveys show this location, the earliest from 1901.
One of 148 National Register listings published here for San Diego County · listed in 1968 · category: Building · built in 1867, Monterey Colonial architecture · a National Historic Landmark.
Sources: the case file at the National Archives · the National Register database, National Park Service
The ground this property stands on, surveyed 3 years apart. Drag the handle to wipe between them. Both sheets are United States Geological Survey originals; neither has been altered.
Regional context, not property-specific evidence. The federal wildfire occurrence database lists 17 fires within 5 miles of Las Flores Adobe between 2010 and 2020, burning about 5,078 acres in total. None started naturally. 3 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 | 12 |
| Arson/incendiarism | 3 |
| Misuse of fire by a minor | 1 |
| Equipment and vehicle use | 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 |
|---|---|---|---|---|
| 7 September 2011 | Arson/incendiarism | 2.4 acres | San Diego Unit | not named |
| 30 September 2016 | Arson/incendiarism | under an acre | California Department of Forestry & Fire Protection | not named |
| 29 September 2016 | Missing data/not specified/undetermined | under an acre | California Department of Forestry & Fire Protection | not named |
| 26 September 2016 | Equipment and vehicle use | under an acre | California Department of Forestry & Fire Protection | not named |
| 13 August 2015 | Missing data/not specified/undetermined | 1,846 acres | Marine Corps Base Camp Pendleton | HORNO |
| 29 July 2016 | Missing data/not specified/undetermined | under an acre | California Department of Forestry & Fire Protection | not named |
| 13 July 2010 | Missing data/not specified/undetermined | 3,225 acres | Marine Corps Base Camp Pendleton | ALISO |
| 29 June 2019 | Missing data/not specified/undetermined | under an acre | San Diego Unit | not named |
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.
| Photograph | Property | Distance | Listed |
|---|---|---|---|
| Las Flores Estancia | 0.3 miles | 1993 | |
 | Santa Margarita Ranchhouse | 6.7 miles | 1971 |
| National Archives record | The nomination case file for reference 68000021 in Record Group 79. |
| San Diego County | All 148 listed properties in this county. |
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