Sure! Everything you put in your stockpile increases your net worth. Everything you craft and place increases your net worth. Everything you build (though, at the moment, not everything you mine) increases your net worth.
An item’s worth is determined in it’s .json file. This number is used to calculate it’s net worth, and how much it sells for in stores, etc.
Edit: On my machine, gold counts toward your net worth. That change should make it in whenever we next have a build.
Edit 2: Our goal is to tweak net worth such that you gain an optimum amount while playing the game as intended. If you want to make a giant slab you can do that, but you’ll probably get more net worth from making multiple discrete buildings.