Allan began writing in 2004 and has since written sixteen plays, all but two with gay characters and themes. Thirteen of these plays have been produced from coast to coast in the US and from Guam to Ontario, internationally.

In New York City his plays have been produced by Emerging Artists Theatre, NativeAliens Theatre Collective for the New York City Pride Festival in 2009, Turtle Shell Productions and at the Samuel French Festival. In 2017 Allan’s “Dare” won the Mario Fratti-Fred Newman Political Play Contest, sponsored by the Castillo Theatre in New York City.

Other plays have been produced by Buffalo United Artists; the Valley Repertory Company of Enfield, CT; the Salem Theatre Company in Salem, MA; by Uptown Players in Dallas for the 2011 Dallas Pride Festival; at the Hyde Park Theatre, the Off Center Theatre and Rollins Theatre in Austin for the 2010 Austin Pride Festival; and by the West Coast Players in Clearwater, FL. Allan has had plays produced at Iowa State University; the Registry Theatre in Kitchener, Ontario; Blue Slipper Theatre in Livingston, MT; The Actors Theatre of Santa Cruz, CA; Eclectic Company Theatre in LA; the University of Guam, Palm Springs, CA; and Healdsburg, CA. In 2019 Allan’s play, “Dex & Abby”, was produced by The Ground Floor Theatre in Austin and in 2020 by Pride Films and Plays, in Chicago, IL. In 2020 his monologue, "Saturday, Duboce Park" was produced by Talking Horse Productions of Columbia, MO and won their first monologue contest. In 2021 his monologue, "Miss Lotta Chanel Explains" was produced by The PlayGround Experiment of New York City in their third monologue festival and was published in their anthology, "Faces of America Monologue Festival, #3". Allan's 10 minute play, "...last and always" was published by Smith & Kraus in their anthology "Best Ten Minute Plays, 2021",

Allan’s plays have been finalists for festivals in Greenville, NC, San Luis Obispo, CA, New York City and for the 2012 National Award for Short Playwriting of the City Theatre of Miami. His play, “Eskandar”, was a finalist for the Arch and Bruce Brown Foundation competition in 2014 and one of three winners of the 2015 Texas Playwrights Festival at Stages Repertory, in Houston.