It depends on the square footage of the home and prices of copper wire, but usually anywhere from 10,000 to 15,000 dollars for average sized 

Internal wiring inside an attic or drywall can last decades without needing rewiring. Wire that isn't exposed to outdoor elements can last a very long time. Electric devices such as circuit breakers, receptacles and switches need to be replaced according to usage frequency, but can also last decades if maintained properly 

We provide free online estimates for most service call repair projects. We will need to ask some questions and possibly see some pictures of of the jobsite.