IME all prefabricated homes I've seen so far are of VERY dirty-cheap quality, not at all easy to repair, not at all accessible (in terms of owner ability to change wiring, piping, ...), not durable, not really cheap given the rest.
Beside that homes are not for single individuals, but for families and families are not that standard... So well, they are a hard task for mass manufacturing and those who have tried mass manufacturing them have designed almost only crap.
IME:
- first choose wood :: it's easier to rework/extend/modify by the owner, if someone want to buy a cheap home ALSO plan to do plenty of stuff alone to lower the final price;
- second carefully designs flexibility :: let's say just electricity, consider a modern "start-like" distribution BUT every room just get a derivation box with all relevant power circuits and anything depart from it, it's not super cheap, but in gross terms it does not count much and allow much flexibility, similarly design easy access to plumbery;
- third do not assume furniture :: just design the home, offering some options but allow the owner to choose all the rest;
- fourth take easy repair into account :: let's say just windows, if they are mounted with some factory-assembled strange setups are a nightmare to substitute thereafter, mount them in ways they can be unmounted with very little effort, use as much as possible "common", "standard" components and so on.
PERHAPS at that point you get some meaningful results.
Beside that homes are not for single individuals, but for families and families are not that standard... So well, they are a hard task for mass manufacturing and those who have tried mass manufacturing them have designed almost only crap.
IME:
- first choose wood :: it's easier to rework/extend/modify by the owner, if someone want to buy a cheap home ALSO plan to do plenty of stuff alone to lower the final price;
- second carefully designs flexibility :: let's say just electricity, consider a modern "start-like" distribution BUT every room just get a derivation box with all relevant power circuits and anything depart from it, it's not super cheap, but in gross terms it does not count much and allow much flexibility, similarly design easy access to plumbery;
- third do not assume furniture :: just design the home, offering some options but allow the owner to choose all the rest;
- fourth take easy repair into account :: let's say just windows, if they are mounted with some factory-assembled strange setups are a nightmare to substitute thereafter, mount them in ways they can be unmounted with very little effort, use as much as possible "common", "standard" components and so on.
PERHAPS at that point you get some meaningful results.