lol, not sure if I would be giving something away that people need to find out for themselves. I probably should make sure it's not just a glitch in my game.
City Hall, the school, police station, military base, -those ones make sense. Then there is Maywood Glen, Recurve Strand and Sunnyside Stand. Those three are actually defined as small parks I think, but that doesn't really explain why you couldn't buy them.
Then Grady's Junkstop and the Salon & Tattoo parlor which just don't make any sense at all.