The typical McCarthy Building Project Administrator salary is $32. Project Administrator salaries at McCarthy Building can range from $23 - $44. This estimate is based upon 21 McCarthy Building Project Administrator salary report(s) provided by employees or estimated based upon statistical methods. When factoring in bonuses and additional compensation, a Project Administrator at McCarthy Building can expect to make an average total pay of $37 . See all Project Administrator salaries to learn how this stacks up in the market.