Quote Originally Posted by Kenky View Post
If you get a Housing Permit on your small, it will increase the "discount value" when you upgrade. Since you sank more gil into the sink. The general Discount is 30% of what you paid for your Small is taken off the Medium.
It's 30% of the minimum value the plot that you're moving from would be purchased at and I don't believe the house alters that discount at all.