But the worst examples are the shows where the landlords get involved in the personal lives of the other characters – Three’s Company and One Day at a Time come to mind. I have been renting apartments for over 25 years and I have never once socialized with a landlord or superintendent outside of the friendly how are you doing.

I would say making Chang a security guard at the same college where he was fired from being a professor on Community has to be up there.

Good one!

Martin Kelly is an archetect who works from home. A home he shares with his three kids: Simon, Debbie and Jenny. He also has a secretary (Betty) who works with him and Simon’s annoying friend Nudge who is constantly there.

[Simon is recast for season 2, but that’s not important].

Debbie moves away at the beginning of Season 5. Sam(antha) Kelly, Martin’s nieces of about the same age moves in. (Notably, Martin’s mother called Martin her favourite child. “I’m your only child” so I’m not sure where Sam cam from.)

[Jenny is recast]

Nudge stops visiting at the end of season 5 and come season 6 an annoying young neighbour begins dropping by constantly, also Simon gets a less interesting friend Ben.

The end of season 6, Simon moves out [leaves the show] and Ben moves in.

Season 12, Martin gets a job in Saudi Arabia and gives the house and business to his friend Greg Russell. Soon after Greg’s daughter Tracy moves in and Sam moves out.

So the residents of the house are now: Greg and his daughter. Jenny, the daughter of the previous owner and Ben the friend of the son of the previous owner.

The secretary remained as the only actor who lasted the whole series (despite having her own short-lived spin-off), although, the character of Jenny also lasted the entire time, but with 2 different actors.