What in the world? You're not buying a $682K house on a $115K salary. Not a chance. That's like 6x your salary. Isn't the rule of thumb no more than 3x? Assuming 20% down, what lender in their right mind is going to lend you 4.5x+ your salary to buy a house?
You can do much less than 20% down; you can get away with 5% down (with mortgage insurance).
In my experience, lenders will actually lend you past what is a good idea for you. It's possible to purchase the house on that income....if you spend all your money on it and nothing else.