Ask these
- Did the job finish close to the written schedule?
- How was the yard left each day?
- Were change orders explained in writing?
- Did anyone return for punch-list items?
- Would you hire them again?
Listen for
Clear answers about communication beat vague "they were fine." Note if the reference is a recent local job.
Pair with paperwork
Still verify license and COI yourself. References do not replace insurance checks.