Owning your own home

How soon after buying your first property do you start knocking walls down 'because you can'? My mates just got a house on a part ownership scheme and i must of suggested it about 50 times in the first hour of seeing it. Do you get a lot of 'pimp my home' feelings like with a bike, or is it like a car where you just keep it in good nick but don't change lots.

I do absolutely nothing unless it is essential.
Except painting