Oh well, I didn't think so. I tried the restriction line in the facilities text a couple different ways to see if it would accept anything. It seems to recognize "one per planet" as a command, as I don't get errors, but it doesn't do anything.
I also noticed that when the game puts facilities on your homeworld, it isn't restricted to 1 spaceyard. Anyway, I ended up going a different rout to get what I wanted, there were a few other things that didn't work as planed (automatic colonizing population will actually put 200M on a planet that only has room for 50M).
Thanks for the help. Should be done by the end of the week.
