Work expands to the time allowed

Curiously, W.B. Yeats wrote that his father John Yeats did his best work only when hurried; otherwise he went back and redid the painting until it was worse.

Comment #4 (which I subscribe):

My favorite principle from CNP was that when an enterprise constructs its own headquarters, its demise follows not long after.

It's in chapter 6 of the Parkinson's Law book, titled "Plans and Plants, or The Administration Block".