It depends, actually. Container prices are very volatile. If you're in the middle of a crash, a container house can be cheap. GP was correct however in pointing

It depends, actually. Container prices are very volatile. If you're in the middle of a crash, a container house can be cheap. GP was correct however in pointing out they aren't particularly good for building houses that are actually nice to live in. EDIT: There's a caveat here. Because containers are trivially transportable, you have lots of options when it comes to assembling off-site that could be kind of nice. For instance, if you were a carpenter with a nice workshop, and wanted to fit out your house in your shop instead of in a muddy building site, it's kind of cool that you can do all the fitting, then put the parts on a truck. This would also be cheaper. If I was self-building, this would be a big consideration for me, because it's not actually very nice working in a building site, and it's not particularly efficient either.