The body of Derek Taylor, 71, was found at the property in Cross Fold, Blackburn in Lancashire, on Wednesday.
A post-mortem examination confirmed he died from "significant head injuries".
Deanha Neely, 32, of no fixed address, appeared before Blackburn Magistrates' Court earlier and was remanded appear at Preston Crown Court on Tuesday.
A 34-year-old woman held on suspicion of murder has been released without charge.
Mr Taylor's family said he had "a big heart of gold and will be greatly missed".
A woman has been charged with the murder of a man believed to have been living inside a coach at an industrial unit.