> Assuming an economic lifetime of 70 to 100 years for new buildings is industry practice based on standards like DIN 276.
Sure, but that wasn't the standard 100 years ago. There are plenty of existing houses that are 100+ years old that will continue to stand for at least another 100 years.
Sure, but that wasn't the standard 100 years ago. There are plenty of existing houses that are 100+ years old that will continue to stand for at least another 100 years.