If you were a buyer looking for a new home, would you feel more confident about the property with a recent full or partial rewiring or the property whose wires were old and/or uninspected?
We can safely say that the former property is a more attractive proposition than the latter. In this way, yes, rewiring will add more value to your home as it can give prospective buyers peace of mind that the investment they are buying is modern, up to date, safe and worth the asking price.