14. Know how much you should invest in your field.
You may have opted to live in a region with higher-than-average home prices, which means you would be able to afford a much smaller home than you would if you lived anywhere else. Get a sense of how much house that affordable to you depending on your financial condition.
Do not attempt to play with your budget at this point in the game. You have already been pre-approved for a mortgage and do not want to jeopardize the method. You may have to make do with fewer bedrooms or less square footage than you had planned. Do you prefer a new building or a house that owned before?