My choices would be

1) File a complaint with the Board
of Registration of Contractors in my
? state (try to get his license revoked)

Many State Boards are filled with very
self-righteous people who like to draw
blood from their own kind. Nobody
wants a hearing by a State Board.

2) File a consumer protection
complaint with the Attorney General

That's one of the functions of the
Attorney General. If enough people
complain, the AG may prosecute him.

6) File a complaint with the local
Better Business Bureau

They may have a file on him.

Those are the least expensive of the
choices you presented.

Dick