Diego Sepúlveda Adobe
| Location | Costa Mesa, California |
|---|---|
| Coordinates | 33°40′23″N 117°56′13″W / 33.67306°N 117.93694°W |
| Name as founded | Estancia de la Misión San Juan Capistrano |
| English translation | Station of Mission San Juan Capistrano |
| Military district | First |
| Native tribe(s) Spanish name(s) | Tongva Gabrieliño |
| Native place name(s) | Lukup |
| Governing body | City of Costa Mesa |
| Current use | Museum |
| Reference no. | #227 |
| Website | |
| https://costamesahistory.org/adobe.htm | |
The Diego Sepúlveda Adobe, sometimes called the Costa Mesa Estancia or the Santa Ana Estancia, is an adobe structure in Costa Mesa, Orange County, California. It is the second-oldest building still standing in the county.