The answer to 'lifespan of rewiring' is that a properly installed electrical rewiring system can last 30-50 years or more with proper maintenance. Electrical wiring is designed to be durable and long-lasting, but it can degrade over time due to factors like age, wear and tear, and exposure to moisture or pests. Regularly inspecting and maintaining your home's electrical system is key to ensuring it lasts as long as possible.
Older homes, especially those built before the 1970s, may need to be rewired sooner as the wiring materials and installation techniques used at the time were not as advanced. Homes that have experienced major renovations or additions may also require rewiring to bring the entire electrical system up to current safety standards.