anthonyb is saying that logs and stray bales are available in large quantities. And he's right, there's no issue of scale here, other than labor. I have family who have built straw houses and they're cheap, straw is very plentiful, and you really can't tell the difference from a traditional drywall/fiberglass insulation home (it wasn't stylized like this one).
The only thing I see being an issue with the house from the article is the composting toilet. However, running a sewer to this style of house is no different than running a sewer to a traditional house.
The only thing I see being an issue with the house from the article is the composting toilet. However, running a sewer to this style of house is no different than running a sewer to a traditional house.