Document the condition
Note the location, when it started, how it's changed, and any past work. Photos and rough measurements make the first call more useful.
Read the local context
Before a pour is priced, three things about the particular lot are worth knowing. What the existing drives, walks and slabs are doing tells you how this ground has already behaved -- cracking that follows a consistent direction is information, not decoration. Where water crosses the lot in a heavy storm decides whether new hard surface will make an existing problem worse. And in the older districts, what the new work has to meet is frequently a century old and not square, so measuring the actual conditions beats assuming a standard detail.
Ask what will be hidden
Excavation, compacted base, soil condition, thickness, reinforcement, slope, joints, curing, access, and runoff determine performance long after the surface is finished. A written scope should say plainly what compaction, drainage, and reinforcement work happens before the surface covers it for good.
Compare complete scopes
Weigh protection, access, materials, permits, testing, cleanup, exclusions, warranty terms, and change orders across every Durham proposal.
What official local sources add
Both records can reach concrete work, for different reasons. Adding impervious surface engages the city's drainage expectations, and placing fill inside mapped floodplain is separately regulated — so a driveway or patio is a siting question before it is a pour. On a designated property, visible hardscape can additionally attract review of material and finish. Beneath both, Piedmont red clay is the subgrade that actually decides outcomes: it holds water, and a slab poured without addressing that moves regardless of how well the surface was finished.
Checked June 20, 2026 — verify current floodplain and historic-district rules with the City of Durham before authorizing work.