is a addon for blender that makes walls/rooms etc just have to type in size you want

will even add doors and windows now I think, not updated mine for a while :-(

only proggy I know that forces booleans is Bryce, but its not really a modeller!

(does do what it does really well)

 

some of what your wanting can be done in poser, just displacement an trans maps on a hires square

can be a fiddly process but not impossible