I decorated the hallway in 1996, the kitchen in 1999 and the porch in 2002.
The lounge has been done four times, so every six years
The bedrooms have been done three times in 24 years and I'm currently doing the small room.
The bathroom has been replaced twice.
I was going to redo the kitchen this year, but for obvious reasons haven't.
To be fair, I don't hate decorating, however I have so many other things I'd rather be doing