David Read's body was found in a flat on Leamington Road shortly before 11.40am on June 7.
A post-mortem examination showed the 50-year-old died of multiple injuries.
It was later discovered that defendant Mohammed Ali Khan had carried out a prolonged and extensive assault using a hammer and scissors.
Khan, of Preston New Road, was arrested on suspicion of David's murder on June 9.
He was later charged with murder and was unanimously found guilty by a jury at Preston Crown Court on Monday (December 18).
Khan was given a minimum term of 22 years in jail on Wednesday (December 20).