First question---Is there more than one bathroom in the house?
This is sounding like a gut and re do.
Up date the plumbing --as much as you can---Is the house on a concrete slab or wood floor joists?
Next is electrical---new fan/light and duct--electrical outlet for the vanity--light opening?
Tell us more--pictures if you can--Mike---
This is sounding like a gut and re do.
Up date the plumbing --as much as you can---Is the house on a concrete slab or wood floor joists?
Next is electrical---new fan/light and duct--electrical outlet for the vanity--light opening?
Tell us more--pictures if you can--Mike---