Counterbalance the lower score effect.
There is a set of other important factors for qualifying in addition to the credit score.
One of them is the debt-to-income ratio. The debt that you have should not exceed 43% of your income. Ideally, it should be below 36%. The lower it is, the higher your chances of qualifying for a mortgage are.
The size of the down payment that you can afford to make is also essential for getting approved. The higher it is the better your position is.
It is now possible to obtain a loan with credit score lower than 600 as long as you can place a down payment of 10% of the value of the house that you will buy.