If it were convenient to post photos I'd post some of my house as an example of the craftsmanship of a scab DIYer whose step-father was a union carpenter.

I worked at a pre-fab housing mill for a while when I was in college. I wasn't in a union, but the mill had some kind of special arrangement with the union. Not really sure what that meant, but one day another student and I suddenly were laid off . . . because the order of 500 homes we were right in the middle of "was just about finished" according to our foreman.