Percival P. Cassidy wrote:
My brother-in-law and his wife are planning to retire and build a custom
home with as many energy-saving and eco-friendly features as possible.
Since they're likely to be stuck with HOA rules about exterior
appearance, solar panels on the roof are probably out, but they were
wondering about simply running water pipes through the roof space.

Does this have possibilities?

Perce
forget silly idea. u americans are going to have to get used to no hot
water like the rest of us. no driving all over the place. no money.
welcome to the planet.