Taken literally, they do not build them as that would entail physical labor; they have non-jews build them. (buh-dump-tss) Taken as I think you meant it as 'do they have to have them them built using the same materials and rules and codes, or can they use different materials and ignore codes': Since they made "laws" that deem every one of their personal homes as being houses of "worship" to get around being subject to certain laws and taxes and other subversions, I don't know if they are exempt or not from certain "laws" and housing codes and are able to have their homes built however they want using whatever they want.