If you're looking for more shelf/hanging space in your closets, take down the shelf/hanging system TV installed with the new build and put up double rows for shelf/hanging. This will work for hanging shirts, etc. Still will need the ones at the original height for longer items. If you've got higher ceilings, you can do a third shelf as well, just for storage shelf purposes.
Put shelving on your garage walls, too - up high, just to store things up out of the way.
Original/prior homeowners of our place installed extra wall cabinets in the laundry area.
Bill