Builder :: Builder (n.) One who builds; one whose occupation is to build, as a carpenter, a shipwright, or a mason..
Castlebuilder :: Castlebuilder (n.) Fig.: one who builds castles in the air or forms visionary schemes.
Housebuilder :: Housebuilder (n.) One whose business is to build houses; a housewright.
Shipbuilder :: Shipbuilder (n.) A person whose occupation is to construct ships and other vessels; a naval architect; a shipwright.