Good on you and props to your parents :)

I just wanted to chime in that “nazi” isn’t technically a swear.

Sure, calling someone one when they aren’t (some willingly people wear the name with pride) can be hurtful, but in the context you’ve used it I’d say it’s OK.

Just my opinion though

I’m in the same boat… have made a model of my house in SH3D and sketchup in the past. Have since tried doing it in freecad but it really is a struggle but im persevering. Hopefully one day it’ll just “click” but its a major time sink atm so im putting it off

FreeCAD has a BIM workbench but a fair warning - the learning curve is pretty steep, especially compared to the likes of SH3D and Sketchup

GPL licence under the licences page on their website. Code is on sourceforge i think