How cool that your employee gave you such good feedback!
I would move ahead with plans as you see fit. Find a house sitter and tell H not to worry about it, and get an appraiser and don't worry about his opinion unless he voices it. He's obviously not cooperating...
About his remark about your commitment - I think he's just trying to twist things to invalidate your faithfulness so he can better justify what he has done.
M 16 yrs, WH62, P54 3 adult blended kids EA 11/13, BD1 6/14 PA fall 14, BD2 2/15 Piecing 2015, BD3 12/15 Separated 4/16 WH moved OW in 5/16 Divorced 6/15/17