Christina, when we built our current home, my DH and my brother were not allowed anywhere near anything to do with irrigation.
They messed up the one at the old house and I never got it to work correctly. Had one valve under the built in BBQ. Of course, the valve was there first but when my brother built the BBQ, he did not move the valve.
When we sold the house 10 years ago, we sold irrigation as is and made the new owners sign that specifically. And I told them personally it probably needed to be redone. .