The British-born, Australian, London-based comic will play Charlie, a "loudmouth cocktail pianist" with grand ambitions, in studio sitcom 88 Keys, according to reports in the Guardian.
A production of Big Talk, the company behind sitcoms including Friday Night Dinner and Rev, the non-broadcast pilot for 88 Keys was commissioned by BBC comedy controller Shane Allen and executive editor Chris Sussman.
The Guardian describes the series as focusing on Minchin and Novak, a pair of "monstrous rampaging ego-morons" who are "brought together by a rare fruit which causes 'unseen complications'".
Kenton Allen, Park's co-chair at Big Talk, says: "Tim Minchin is without doubt one of the most multi-talented performers in the world and we are utterly delighted he's fallen in love with Jon Brown's rather brilliant script.
"88 Keys is sort of the son-of-Black Books as it marks Nira Park's return to producing a multi-camera show and reunites her with director Martin Dennis and many of the dream team behind the success of Black Books. Fingers crossed, early days and all that, but we're all a bit excited about this one."