Tools menu IT IS NOT a default menu item.
It appear only if you install at least a plugin which programed it(Cabinet maker, Roof generator, Advanced editing etc).

I didn't know that! I am so used to having the Tools menu and I don't remember ever seeing it without, even with a new install. Probably because the plugins directory is still there from the previous install. After 18 years using Sweet Home 3D you can still learn something new [:)]