Document the condition
Note location, timing, weather relationship, changes over time, and any previous work. Photos and simple measurements can improve the first conversation.
Read the local context
Plan around the fact that most Cary homes date to the Research Triangle Park-driven growth of the past four decades, sit on slab foundations, and were graded for builder-grade drainage rather than western Wake County's slow-draining clay, so a plan that only addresses visible growth without checking grading and irrigation will likely see the problem again.
Ask what will be hidden
What's visible on the surface is the smallest part of the problem. A plan worth paying for tracks the water back to its entry point, accounts for humidity, evaluates how far the damage has spread into materials, defines containment, and specifies how the result gets verified. The written scope should explain the preparation and verification that will no longer be visible at completion.
Compare complete scopes
Look for protection, access, materials, permits, testing, cleanup, restoration, exclusions, warranties, and change-order rules.
What official local sources add
Neither the preservation program nor the stormwater system governs remediation, and it is more useful to say so than to imply a connection. Where they do earn their place is as history. The lot's drainage path and any recorded easement tell you how water is meant to move across the site, and a persistent moisture problem frequently turns out to be a structure sitting where that design has stopped working -- a blocked swale or a regraded neighboring lot. That is a record worth pulling, because it points at the cause rather than the symptom. Designation matters only if remediation leads to visible exterior reconstruction.
Sources were reviewed June 20, 2026. Confirm parcel-specific flood zones, historic-district status, permits, and current requirements with the relevant authority before authorizing work.