Nothing was actually bad per se about any of the four seasons of this show (well, maybe the fourth season), but looking at it from a casting point of view, it was all over the place. The first season revolved around the Warrens--mother, Jackie (Debbie Allen); daughter, Tiffany (Maia Campbell); and son, Austin (Jeffery Wood)--who lived in a duplex alongside the landlord, a retired football player named Marion Hill (LL Cool J). Tonia Harris (Kim Wayans) changed from chasing Marion to becoming his best friend--as well as changing from a recurring character to a permanent character--as the season changed. Also, at the end of the season, Jackie and Austin moved away, leaving Tiffany to live with Marion. In order to afford to take care of her, Marion opened a health clinic with Tonia.
Several new characters popped up in the second season. The main new character was Dr. Maxwell "Max" Stanton (Alfonso Ribeiro), a conceited clinical doctor who also became part owner of the clinic. Also, Tiffany was given some friends, Carl (Ken Lawson) and Raynelle (Gabrielle Carmouche), who popped up here and there. But the most unnecessary character was a kid named Rodney (Deejay Daniels). He came out of nowhere and nobody ever bothered to ask whose kid he was. He didn't bring much to the show, which is probably why he was gone by mid-season.
Things were going fine until the beginning of the fourth (and final) season. The only people that were left were Marion, Max, and for some reason Carl and Raynelle. Because Carl and Raynelle were still merely recurring characters, the fourth season had more guest stars than regular cast members (the beginning credits only listed LL Cool J and Alfonso Ribeiro). The plots were very bland and uninteresting, particularly because the funniest characters and jokes were brought out by actors that were no longer there.
Overall, In The House was a good show, but it would have been better if the producers could make up their minds about the cast.