With 30 year fixed rate mortgages at 3%, I'd say the present value of a building that lasts 100 years is 23% more than the present value of a building that last

With 30 year fixed rate mortgages at 3%, I'd say the present value of a building that lasts 100 years is 23% more than the present value of a building that lasts 50 years. It's certainly worth it to spend more for a longer lasting building.