Tim,
Welcome to the Power Wash Network
YES! There is $ to be made in new construction clean up.
I have several customers, in the Sacramento CA area who
do nothing but new construction clean up & are doing quite well.
From picking up scrap lumber, and other construction debris, to
pressure washing driveways, walkways, garage floors, and even
the whole exterior of home.
Maybe one of the Contract Cleaner members on the board can give
you some more input.
Best Wishes