How long will it take to build a Straw Bale building?

Bale walls can be built incredibly fast when the process has been well streamlined. The walls of a 150 sq. m-sized house can typically be built in just two days. The time needed to plaster will depend on the quality, type of finish and application method applied.  With hand applied earthen plasters taking much longer, being more labour intensive, and machine applied gunite plaster or using the bale pre-dipping method, the plastering can be done exceedingly quickly.

You obviously still need to count in the time used to build the foundations and roof structure, which could be similar to a conventional building.