The 24-year-old midfielder has signed a three-year deal with the Club having impressed whilst on loan at the KC Stadium last season.
Livermore made 41 appearances and scored three goals as the Tigers finished 16th in the Barclays Premier League and made an historic first-ever appearance in the FA Cup final in 2013/14.
Delighted to now be a permanent member of Steve Bruce’s squad, Livermore is relishing the next chapter of his career with the Tigers.
“I'm delighted to be joining Hull City on a permanent basis," he said after completing the deal earlier today.
“I thoroughly enjoyed my season here on loan and I firmly believe that this club will keep on going from strength to strength. I made my feelings known that I wanted to come here permanently and once the two clubs had agreed the fee, it was very straightforward."