Nearly everyone involved in a real estate transaction -- the seller, the buyer's real estate agent, the seller's agent and the mortgage broker -- has a vested interest in getting the deal done because they only get paid when the house is sold. So they may push a deal even if it's not in the best interest of the buyer.
One of the best defenses against making am expensive purchase you'll regret is to hire a real estate attorney -- even in cities where it's not standard practice. These professionals charge flat fees and their advice is objective.
It's nice to have someone on your side.
NEXT: 5. No contingencies