Took a little tour yesterday with a building inspector friend. Some observations:
Tract housing primarily solid 2x10 & 2x12 floor joists while custom uses open type floor trusses.
Wiring devices for tracts are Eagle and GE Mexico (Something like 29 cents at yellow box). Custom appears to be dominated by P&S & Hubbell.
Tracts use pvc for plumbing. Custom=copper.
Furnished appliances-Tract competetive line Sears, GE, Whirlpool. Custom Kitchenaid top of line. ie: Dishwasher Kitchenaid KUDS02SRSS.
And so on throughout.
Is this pretty common? I was never in house wiring, commercial/industrial only, so I am not that familiar with the quality standard fo homes except my own. Some of the home general construction seems pretty borderline.

Sam