THE same-sex marriage campaign has found a most appropriate location for its South Australian headquarters — in Gay’s Arcade.

The Equality Campaign set up its office in the arcade, which links Adelaide Arcade and Twin St, on Tuesday.

media_camera Gay's Arcade in Adelaide.

SA field director Emmanuel Cusack said he looked at a few different locations but it seemed an office in Gay’s Arcade “seems like it was to be”.

“There was a little bit of a giggle in it,” he admitted.

The office is a hub for organisers and for volunteers to sign up for tasks such as doorknocking, making phone calls and running events.

“It’s been good being here because there’s a bit of foot traffic and people know where it is,” Mr Cusack said.

Gay’s Arcade was erected in 1885, according to a plaque in the doorway to Twin St, and was designed by architect James Cumming.

It was named after Patrick Gay, an original shareholder in Adelaide Arcade.

T’Arts Textile and Arts Collective artist Lynn Elzinga-Henry said the Equality Campaign was more than welcome in the arcade.

“We’re a collective so there’s 34 artists here and I would hazard a guess that they’re fine with it,” Ms Elzinga-Henry said.

Ballots for the same-sex marriage postal survey started arriving in letterboxes this week.