BlockFrom the record
One of 32 National Register listings published here for San Luis Obispo County · listed in 1995 · category: Building.
Sources: the case file at the National Archives · the National Register database, National Park Service
Eight Mile House
Listed on the National Register of Historic Places in 1995. 13 historic topographic surveys show this location, the earliest from 1897.
The listing
- What is counted as historic. The nomination lists 2 buildingss, 1 structure as contributing to the listing.
- Address. Off CA 101 on Stagecoach Rd., Santa Margarita, 93453
- When was it listed? March 1995
- Category. building
- Census division. Atascadero
- National Register reference number. 95000358 - 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
1897 to 1995The ground this property stands on, surveyed 98 years apart. Drag the handle to wipe between them. Both sheets are United States Geological Survey originals; neither has been altered.
Fires near this property
272 since 1992Regional context, not property-specific evidence. The federal wildfire occurrence database lists 272 fires within 5 miles of Eight Mile House between 1992 and 2020, burning about 4,544 acres in total. 2 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 |
|---|---|
| Equipment and vehicle use | 122 |
| Missing data/not specified/undetermined | 116 |
| Debris and open burning | 12 |
| Smoking | 8 |
| Power generation/transmission/distribution | 5 |
| Arson/incendiarism | 3 |
| Natural | 2 |
| Firearms and explosives use | 2 |
| Railroad operations and maintenance | 1 |
| Misuse of fire by a minor | 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 |
|---|---|---|---|---|
| 8 September 2014 | Power generation/transmission/distribution | under an acre | San Luis Obispo Unit | RANCH |
| 8 September 1994 | Equipment and vehicle use | under an acre | San Luis Obispo Unit | SLU 3071 |
| 5 September 2019 | Missing data/not specified/undetermined | under an acre | San Luis Obispo Unit | EMS3CDF/ |
| 5 September 2011 | Equipment and vehicle use | under an acre | San Luis Obispo Unit | CUESTA |
| 5 September 1994 | Missing data/not specified/undetermined | under an acre | San Luis Obispo Unit | SLU-3023 |
| 30 September 2011 | Missing data/not specified/undetermined | 15 acres | San Luis Obispo Unit | not named |
| 30 September 2000 | Railroad operations and maintenance | under an acre | San Luis Obispo Unit | GRADE |
| 29 September 2009 | Missing data/not specified/undetermined | under an acre | San Luis Obispo Unit | RESERVOIR |
Mines and quarries near this property
10 of 86 shownRegional context, not property-specific evidence. The federal mineral resources record lists 86 workings within 5 miles of Eight Mile House: 37 past producers, 19 prospects, 14 producers, 13 occurrences. 14 still produce. What was taken out: Chromium, Copper, Sand and Gravel, Construction, Stone, Crushed/Broken. Distance is straight-line from the map coordinates, so a quarry counted here may appear on a neighbouring settlement's page as well.
| Where | Site | Commodity | Status | Recorded |
|---|---|---|---|---|
| Estrella Mine | Chromium, Iridium, Platinum, Palladium, Ruthenium, Rhodium | Past Producer | Chromite | |
| New London Mine | Chromium, Iron | Past Producer | 1882, 1883 | |
| Questa Prospect | Chromium, Platinum, Palladium, Iridium, Ruthenium, Rhodium | Occurrence | Chromite | |
| Santa Margarita Platinum Occurrence | Platinum | Occurrence | ||
| Santa Margarita Ranch Shell Dep. | Calcium | Past Producer | ||
| Seeley Group | Iron, Chromium | Past Producer | 1880 | |
| Frank Tate Ranch Pit | Stone, Crushed/Broken | Past Producer | 1915 | |
| Outpost Nos. 1 & 2 Claims | Chromium, Iron | Prospect | 1880 | |
| Pick and Shovel Mine | Chromium, Iron | Past Producer | 1880 | |
| San Luis Obispo | Nickel | Occurrence |
Storms near this property
3 since 1996Regional context, not property-specific evidence. The National Weather Service names Santa Margarita, the town this property stands in, in 3 storm reports between 1996 and 2023: 1 heavy rain, 1 hail, 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.
| When | Event | Place named | Harm | What the report says |
|---|---|---|---|---|
| January 2023 | Flash Flood | Santa Margarita | - | Heavy rainfall produced flash flooding on Las Pilitas Road near Lake Santa Margarita. The bridge was impassable due to flooding. |
| March 2001 | Hail | Santa Margarita | - | no account filed |
| February 1996 | Heavy Rain | Santa Margarita | - | no account filed |
Maps showing this location
13 surveysUnited 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.
- 1897 USGS San Luis Obispo quadrangle1:62500 - 4 printings
- 1900 USGS San Luis quadrangle1:125000 - 4 printings
- 1942 USGS San Luis Obispo quadrangle1:62500 - 2 printings
- 1947 USGS San Luis Obispo quadrangle1:250000
- 1948 USGS San Luis Obispo quadrangle1:250000
- 1952 USGS San Luis Obispo quadrangle1:62500 - 2 printings
- 1956 USGS San Luis Obispo quadrangle1:250000 - 5 printings
- 1957 USGS San Luis Obispo quadrangle1:250000
- 1958 USGS San Luis Obispo quadrangle1:250000
- 1965 USGS San Luis Obispo quadrangle1:24000 - 5 printings
- 1976 USGS San Luis Obispo quadrangle1:24000
- 1981 USGS San Luis Obispo quadrangle1:100000 - 3 printings
- 1995 USGS San Luis Obispo quadrangle1:24000
Listed places nearby
6 within 8 milesOther 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 |
|---|---|---|---|
 | Powerhouse, The | 4.9 miles | 1993 |
 | Monday Club of San Luis Obispo | 5.5 miles | 2016 |
 | William Shipsey House | 5.6 miles | 2010 |
 | Ah Louis Store | 6.0 miles | 2008 |
 | San Luis Obispo Carnegie Library | 6.2 miles | 1995 |
 | Robert Jack House | 6.4 miles | 1992 |
Sources for this property
| National Archives record | The nomination case file for reference 95000358 in Record Group 79. |
| San Luis Obispo County | All 32 listed properties in this county. |
Provenance
- 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.