Hans Brother's Builders is a construction company that was operating in the 1960's. They were active in Europe.
While searching through the Dumas Chateau, Cate Archer found a note from Hans Brother's Builders to the Baroness Dumas with their proposal to build a new 8,000 square foot Dumas Ski Lodge in the Italian Alps.
- It is not known if the construction project by this company was ever started.