Off Grid Retirement Home in Eastern ontario

Interior living area (Net Area, excluding the thickness of exterior walls) - House only without decks and garage building
Ground Floor =1580.65 sq ft
Loft / Upper floor = 315.11 sq ft

If the thickness of the walls is included, Gross floor area would be:
Ground floor = 1731.59 sq ft
Loft / Upper Floor = 363.68 sq ft