Coverage and buffers govern where concrete can go
This is the trade most directly affected by Cary's stormwater standards. New driveways, patios and pads add impervious surface, and coverage limits, buffer requirements and drainage expectations can restrict placement independent of the pour itself. On a designated property, visible hardscape can also attract preservation review. Both are siting questions best answered before a design, not after a permit is refused.
Official sources
Check coverage and buffers before design
Citywide standards cannot tell you your existing impervious coverage, where a buffer crosses your lot, or whether your subgrade will hold a slab. Establish the first two with the town and the third with whoever pours.
Research date
These sources were checked June 20, 2026, and requirements can change without notice.