It absolutely becomes frustrating but it’s also part of the creative process. Without the limitations, you wouldn’t come up with creative solutions. And architecture is by definition is about restrictions: The site is so big, you can only build this tall, and if you want to do something different you have to go through a whole series of steps through the planning process and the approval process. 

So each one of these things, you have to look at not so much as a restriction but as an opportunity. If you see it as an opportunity you can come up with a creative solution. But that’s, like, everyday. [laughs] Oh, another opportunity!