It prints best with 0.4 nozzle at current scale especially because all floor/roof are interlocking (no glue needed)
The Base piece is 460mm long (so you may have to cut it in half) the actual scale is 1:64 or 3/16" = 1'-0"
as you can see in the last picture I create slot where piece matches perfectly and sit in but if you scale it down I am not sure the small extension will print correctly
some pieces are printed FDM some DLP (for instance the round stair is DLP like cars and trees)
However, I didn't include cars and trees.