Aluminum wiring isn’t illegal, but it’s no longer up to code. With that being said, a property inspector is likely to certainly make note of this after assessing any property and it’s likely that this will be a focal point of any conversation regarding the property. While a property is unlikely to fail an inspection because it has aluminum wiring, an inspector is likely to suggest closely monitoring it and eventually consider replacing it with the preferred copper wiring. Where you may run into trouble is insuring the property. Because aluminum wiring poses more of a fire risk than copper wiring, many insurance companies are either hesitant to write a policy for the property or will only do so with a higher premium. The good news is that there are a few ways to mitigate the threat posed by aluminum wiring. One route is to completely rewire the property with copper wiring. The other more affordable and less invasive mitigation method is to have an electrician add a copper wire where switches, outlets, or devices connect. This secures connections and also helps prevent oxidation. Lastly, the presence of aluminum wiring can also become a negotiating tactic during a property transaction. Following an inspection, a prospective buyer may request the seller update the wiring to code or reduce the price of the property before the sale closes.