Estudillo Mansion
Historic house museum in San Diego, California. Built 1827. Added to the National Register in 1970, and a National Historic Landmark.
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What it is
The Casa de Estudillo, also known as the Estudillo House, is a historic adobe house in San Diego, California, United States. It was constructed in 1827 by José María Estudillo and his son José Antonio Estudillo, early settlers of San Diego and members of the prominent Estudillo family of California, and was considered one of the finest houses in Mexican California. It is located in Old Town San Diego State Historic Park, and is designated as both a National and a California Historical Landmark in its own right.
Text from Wikipedia, CC BY-SA 4.0.
The record
| Property type | Building |
| Address | 4000 Mason St., San Diego, CA |
| County | San Diego County |
| Listed | Apr 15, 1970 |
| Listed for | Architecture |
| Level of significance | National |
| Reference number | 70000143 |
| Built | 1827 · more from the 1820s |
| Type of place | house |
| Style | Spanish Colonial architecture |
| Designations | National Historic Landmark, California Historical Landmark, list of San Diego Historic Landmarks |
| Contributing resources | 1 building |
| Standing | Yes |
The nomination form, the document that argues why this place matters, is in the National Archives: Read the nomination ↗
Visiting
| Address | 4000 Mason St., San Diego, CA |
| Coordinates | 33.7810° N, 116.9681° W · Directions ↗ |
| Also in San Diego | 89 listed places in San Diego → |
| Nearest national park unit | Juan Bautista de Anza National Historic Trail · 16 miles · on Park Atlas |
| Federal campgrounds nearby | Boulder Basin 13 miles · Fern Basin 13 miles · Marion Mountain 14 miles |
Explore
Map
Nearby in San Diego County
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.jpg/960px-Warner's_Ranch_(WEST_ELEVATION_OF_RANCH_HOUSE).jpg)
Public land around it
| San Bernardino National Forest ↗National Forest, U.S. Forest Service | Inside the boundary805,483 acres |
Wilderness Atlas publishes a centroid and an acreage for each unit, not a boundary line. Distance here is measured to a circle of the same area drawn around that centroid, so treat it as roughly right rather than surveyed.
Local history books for San Diego
We earn a small commission if you buy through these links. It does not change what we list.
- San Diego LowridersAlberto López Pulido & Rigoberto "Rigo" Reyes, 2017Find at Bookshop.org
Guidebooks to historic places in California
Titles come from Open Library's catalog, matched by subject heading or by title.
Reference
Questions people ask
When was Estudillo Mansion listed on the National Register?
Apr 15, 1970. It is also a National Historic Landmark, the higher of the two designations.
Source: National Park Service
When was Estudillo Mansion built?
1827, in the Spanish Colonial architecture style.
Source: Wikidata
Where is Estudillo Mansion?
4000 Mason St., San Diego, San Diego County, California. The nearest national park unit is Juan Bautista de Anza National Historic Trail, 16 miles away.
Where is the nomination form for Estudillo Mansion?
The National Archives holds the nomination form, the document that made the case for listing.
Source: National Archives
Are there campgrounds near Estudillo Mansion?
Three federal campgrounds are within reach. The closest is Boulder Basin, 13 miles away. Fern Basin is 13 miles away, and Marion Mountain is 14 miles away.
Source: Campsite Atlas
Is there cell service at Estudillo Mansion?
FCC coverage maps show Verizon 5G, AT&T 5G, and T-Mobile 5G at the listed point. Coverage indoors and behind old masonry is another matter.
Source: FCC Broadband Map
Is there a wildfire near Estudillo Mansion right now?
2 active incidents within 50 miles as of 2026-10-17, nearest Henderson, 39 miles away.
Source: Map
Sources
Location, type and contributing counts come from the National Park Service's National Register spatial data. Listing dates come from the National Register office's spreadsheet where it carries the listing. Construction date, architect, style, photograph and encyclopedia link come from Wikidata and Wikimedia Commons, matched on reference number 70000143. Nothing here is transcribed by hand. The nomination form and photographs ↗ at NPGallery are the original nomination as filed with the National Park Service, and the form is often the best description of the place. The description under "What it is" is the opening of the Wikipedia article, CC BY-SA.