My house was renovated internally in 2004 by a prior owner. 100% new electrical, 100% new overhead lights and wall outlets, and new copper pipes. They are exposed in the ceiling of the walk out lower level, and in 2014 I paid to have them cleaned and polished and they look really nice. I also painted the iron gas pipes and vents with metallic copper paint. It isn’t shiny like new copper, but as the patina set in on the real copper now they match unless you look very carefully.
My major complaint about the renovation is that my kitchen was done mid grade without adding a dishwasher. So I am stuck with an OK kitchen that is only 12 years old, too new to replace without being wasteful.
Overall, however, the renovation was done right including the elements that are not obvious.