I will say that alot of the crap jobs you see in new home construction are due to poor concrete work. Off level, out of square, poor quality concrete, bearing points in the wrong spots etc. I find the closer you get to the GTA, the worse it is. Not so bad as you move east. There are a couple good concrete formers out here.
I've learned to stay away from some sites, just by checking out the foundations. Good forming usually helps make a better home. Some of the foundations I've seen, I wouldn't even touch. I actually made a site sign a waiver before I built a house for them, the concrete was that bad. I was on my way off the site, but this guy was almost crying to keep me there.......I know from the sill plate up, the house was solid, but under that......who knows.
I've seen some crazy crap in my time framing houses!!!! I"m glad I came to my senses and went back to school!!!
Sinker