These are some really good findings and at the same time gross. But fixing these normally does not take that much time and money.
The roof part is pretty common. In houses, roof is one of the most exposed part. Rain, snow, heat and possibly debris damage it overtime. In house inspection, roof is also one of the most noticeable. - James
If the structure itself is damaged, how much more would the electrical wirings be? Annual inspection would prevent damages such as these.
Our team commonly finds these situations during project inspection such as renovation and replacement. It is just satisfying to see the transformation from horrible to mesmerizing houses. - Tim