Sounds more interesting than trainspotting.

As a child I loved watching construction sites! I'd literally plop myself on the group and couldn't be moved until I was done. This would be ideal retirement for me. Though as I am a house spouse, I won't really get a retirement, gotta keep cooking meals, doing laundry, dishes and cleaning. At least I'll have no deathbed regrets about not spending enough time with my daughter though!

I look and form unfavorable judgments on new construction here and there in my neighborhood. Do I count?

Also, I think that "sidewalk superintendent" deserves a mention. That one I heard from a contractor who worked on our house.