How not to make money mistakes as a homeowner. The keys to your home are in hand.Finally, you can install your dream patio.You can paint the walls without losing your security deposit.Heck, you could knock out a wall. You’re soooo ready to be a homeowner.So ready in fact, you’re about to make some costly mistakes. Wait, whaaat? “You have to rein it in and be smart,” says Daniel Kanter, a homeowner with five years under his belt. Especially in your first year, when your happiness, eagerness (and sometimes ignorance) might convince you to make one of these eight mistakes: #1 Going With the Lowest Bid The sounds your HVAC system is making clearly require the knowledge of a professional (or perhaps an exorcist?).But you’ve been smart and gotten three contractor bids, so why not go with the lowest price?You might want to check out this story from a Michigan couple . Rather than going with a remodeler who’d delivered good work in the past, they hired a contracto...