Shack foundation and houses

[Warak]

Hello, wanted to ask, is sit possible to make

1. Smaller shack foundation, half-size and\or thin like walls. I love foundation properties, but sometimes it is to big or to wide and so on.

2. Covenant houses, I like Covenant idea but this settlement is to small, I want to use houses somewhere else.

 

Or do you(modders) need GECK for such mods?