$700 seems insanely inexpensive.
In regard to the sprinklers, quotes say they are not responsible for any damage to underground sprinklers or plumbing.
They better not damage anything the PB just put in!
But for sprinklers, most of our hoses were damaged during the dig. Tree and bush removal with grinding of stumps got a few others. We are going to need to replace all of the sprinkler hoses prior to putting in the pavers.
It will be a mess of plumbing, as we put in a new system to replace what came with the house, but those old hoses were all still in the ground. There will be 3 sets of the sprinkler hoses in the ground once we are done (but only one set will be hooked up).
We upgraded to 200 Amps when we were moved into the house. A few years ago we had to re-replace the box when an electrician doing some work pointed out the poor quality of work previous electricians did, and other things not up to code. He may have improved it, but still didnt do a perfect job.