# him who builds ... his upper rooms ... who makes ... for him ... he does not give

The words "him" and "his" and "who" and "he" refer to King Jehoahaz (verse 11).

# builds his house by unrighteousness, his upper rooms by injustice

"unjustly forced men to build his house and his upper rooms"

# his house

In this case it refers to Jehoahaz (verse 11) and his family.

# him his wages

This refers to any of the neighbors of King Jehoahaz (verse 11) whom the king forces to work.