You are likely getting lead free, asbestos free, central heating(cooling), double pane windows, vastly better insulation, more fire resistant, better and more a

You are likely getting lead free, asbestos free, central heating(cooling), double pane windows, vastly better insulation, more fire resistant, better and more appliances, and depending on locations things like: full basements, attached garages, screened in patio/porch, or pools.