The other option, although I am not too familiar with how it works, is a long term property lease. You lease a piece of land from someone for 40 years or so then do with it as you like including building a house. Of course, things revert to them at the end of the lease but if you are long gone, it doesn't matter.
"The other option, although I am not too familiar with how it works, is a long term property lease"
Yeah, I've looked into that. You've described it properly. You need an underlying business entity to do it (and to hold the lease).
I'd rather enjoy the legal simplicity of a condo.