Pulling permits at the start of a rehab

[Lenzy Ruffin]

Is there any reason not to pull all the necessary permits as soon as you take ownership? 

I'm working on my first rehab and the contractor advised to pull permits as we got close to the work requiring permits rather than just pulling all the permits at the outset. Is there any good reason to do things this way? It just seems like a way to create an opportunity for a work stoppage if the permits aren't immediately approved when they're requested. If pulling permits as you go is the right way to do it, I'd like to hear that, too (and why). Just trying to learn the right way to do these things with this first house so I'll be straight going forward.