Most home inspectors will initially look for visual signs of CDW before ordering more intrusive inspections. Fortunately, CDW usually gives some pretty obvious visual signs of it's existence. Corrosion of chrome, copper, and the backs of mirrors to name a few. Copper seems to be the most reactive metal to look for. It turns black with a powdery coating almost like soot. There are several places in your home you can check to see if there is noticeable damage to copper. The copper tubing coming out of the A/C air handler is a good place to start. Also, even if your home have PVC plumbing, most faucets have copper tubing under the sink and connecting with the PVC. Home inspectors will typically take the cover off an electrical outlet in each room to check the copper ground wire looking for evidence of CDW.
You can look yourself for these visual signs. If you are unsure or see anything that is suspicious, call a local home inspector for a second opinion.
Keller Williams Realty