My pop built a six car garage this way.
I spent a summer chipping morter off cinder blocks and the fall building trusses. Dad laid out a pattern on the floor and me and sis built them all with salvaged nail gun nails.
The worst part of that was separating the nails from the plastic strip.
Uncle Wedge poured the footer.
Well, no free stuff here! I will have to pay for (no insurance) a new roof on my house.