00:00 intro
01:12 the concept
02:06 new project
05:28 making the first wall
09:15 making the other walls
12:47 positioning the walls
25:00 rotating the walls
26:03 shifting the building up
27:22 outro

Here are some links:
my big project file (a little messy): https://gumroad.com/l/procbuild
blender alternative: https://gumroad.com/l/msJMr
the project I made in this video: https://drive.google.com/drive/folders/1pfGCggezjDkdhUXdSSqKffRqdobw6GKK?usp=sharing

Have fun :)