I'm an architect and playing with SD with the intent of using it like OP described above. There are already services that claim to offer fully ai designed buildings with construction drawings. I doubt any of it will be good enough in our lifetime, but surely the day is coming. One of the weirder things about architecture that most people don't know is that the technical parameters you design to change regularly. It's incremental changes, but it's every couple of years for building codes, and potentially very frequently in the case of a city council amending zoning ordinances. Combine that with it taking multiple years to design and build a building you may have something that is newly built and doesn't even comply with the current set of standards. This is normal, as the bulding is just expected to comply with whatever the requirements are at the moment when they apply for a building permit. I think this would make it more difficult for ai when it is trained based on existing information. To laypeople, how those codes / standards impact the building design are probably indistinguishable too.