Kameny went on to co-found the Mattachine Society of Washington and is considered the father of gay activism.

[3] According to the National Park Service, the Kameny House served as a meeting place, archives, informal counseling center, headquarters of the Mattachine Society, and a safe haven for visiting gay and lesbian activists.

[5]According to The Washington Post staff writer, Petula Dvorak, it was from his house on Cathedral Avenue that Kameny led his campaign against sodomy laws, helped overturn the American Psychiatric Association's definition of homosexuality as a mental illness, lobbied against the federal government's refusal to grant security clearances to homosexuals, and became "the first openly gay candidate to run for Congress".

Historic Landmark, because, "for 13 fiery years, it was the epicenter of the gay rights movement in the nation's capital.

[2]: 7  Kameny died at his home on October 11, 2011, less than a month before the house was finally listed on the NRHP.