The Villans will ply their trade in the Championship next term.
The Villans' relegation from the Premier League was confirmed on Saturday after slumping to a 1-0 defeat at Manchester United.
It has been a brutal top-flight campaign for Villa - rock bottom of the table - which has seen two managers lose their jobs - Tim Sherwood and Remi Garde - and spawned just three league victories all season long.
Marcus Rashford's goal at Old Trafford sealed their demotion, and Rowett admits that he wondered why Birmingham fans were celebrating during their 2-1 defeat by Championship leaders Burnley on Saturday.
"I thought the crowd were getting so excited by our performance at one stage! Then I realised that there had obviously been a goal somewhere," he said to the Birmingham Mail.
"The crowd were brilliant today, the crowd have been brilliant with us all the time but I thought today was extra special.
"If we could get that a little bit more often then it's a special place to be. Let's hope those two games next season will be something to look forward to."
Both sides last met this season, oddly enough, when Villa beat their bitter local rivals 1-0 in a League Cup clash back in Tim Sherwood's reign.
It remains to be seen how many Villa players will still be around for the derbies next term - and indeed who will be in charge of the team. It is caretaker Eric Black at the moment, but he is not expected to win the role on a permanent basis.