1. Read what is already there
Walk the existing drives, walks and patios and note where they have cracked, lifted or settled. On Piedmont clay a consistent pattern is information about the subgrade, not cosmetic damage.
2. Settle the ground and the water
Subgrade preparation, base compaction, thickness, reinforcement and joint layout decide how the pour ages. On a rolling Durham lot, so does where the added impervious surface sends storm water once it leaves the concrete.
3. Get the mix and the method in writing
A complete quote names the mix, the reinforcement, the joint spacing and the curing method, alongside access, protection of what stays, permits and how a change order is handled.
4. Compare the reasoning, not the totals
Two quotes that differ on base depth or joint spacing are proposing different outcomes, not different prices. Ask each what they expect the subgrade to do over a wet-and-dry cycle.
5. Close out while it is still fresh
Confirm the curing period was observed, that joints were cut on time, and what the warranty covers against cracking. Establish the sealing schedule that is now yours to keep.