There are a lot of variables. Pier and beam or slab? It can often be easy to run wires under the house in pier and beam, not really an option for slab. Single s

There are a lot of variables. Pier and beam or slab? It can often be easy to run wires under the house in pier and beam, not really an option for slab. Single story? It is usually pretty easy to run wires in the attic, but dropping down from the second to first story could be tricky without opening up a wall.