The Carl Wilhelm August Groos House is located in the Bexar County city of San Antonio in the U.S. state of Texas.

Groos had immigrated from Germany to Texas in 1848, at which time he and his brothers started a freighting firm.

In 1880, Groos hired Giles to build his San Antonio home.

[4] It is listed on the National Register of Historic Places listings in Bexar County, Texas as a contributing structure of the King William Historic District.

[2] In 1957, the house was purchased by the San Antonio Council of the Girl Scouts of the USA.