We are thinking on adding a bonus room over our existing bedroom. The electrical wiring was placed properly meaning it was ran over existing studs. I will check of course with the inspection office but I am wondering if I will have to re-run the wiring and drill holes through the joists or is notching the joists putting metal plates over the notch acceptable and not cause a problem with structural integrity. These are 2x8 joists. The number that would have to be re-ran is the concern of course with cost.