alt Hacker NewsThere are some examples in germany, among the well todo, to wrap old houses and the garden in one big greenhouse. Basically with automated roof glass doors and shade- its basically one prolonged summer/seasonshift and it safes on heating. Only problem is condensation and moisture
Something tells me that that's more of a "a dozen parties get their pound of flesh if you want an enclosed porch or an addition, but only half a dozen if it's a greenhouse" type thing.
You see the same thing with movable awnings in my jurisdiction.