Actually it would be very different to run a sewer to this house than to a traditional house.

When you are piping large amounts of raw sewage around you need strict rules to protect people, property and the environment. So now you need to get it up to code, and pay trained people to check that it complies.

Straw is a promising material but I think we've already tried harvesting logs in "large quantities" and it hasn't worked out perfectly.